{"id":5542,"date":"2026-01-28T07:25:33","date_gmt":"2026-01-28T07:25:33","guid":{"rendered":"https:\/\/pickandplacemachine.com\/?p=5542"},"modified":"2026-05-20T01:59:02","modified_gmt":"2026-05-20T01:59:02","slug":"tombstoning-chip-standing-causes-and-prevention-in-pick-and-place","status":"publish","type":"post","link":"https:\/\/pickandplacemachine.com\/vi\/tombstoning-chip-standing-causes-and-prevention-in-pick-and-place\/","title":{"rendered":"Tombstoning (Chip Standing): Nguy\u00ean nh\u00e2n v\u00e0 bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba trong qu\u00e1 tr\u00ecnh \u0111\u1eb7t chip"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Ba t\u1eeb: \u0110\u1eebng \u0111o\u00e1n n\u1eefa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tombstoning l\u00e0 m\u1ed9t trong nh\u1eefng l\u1ed7i khi\u1ebfn c\u00e1c \u0111\u1ed9i ph\u1ea3i tranh c\u00e3i. Nh\u00e2n vi\u00ean v\u1eadn h\u00e0nh \u0111\u1ed5 l\u1ed7i cho quy tr\u00ecnh \u0111\u1eb7t linh ki\u1ec7n. K\u1ef9 s\u01b0 quy tr\u00ecnh \u0111\u1ed5 l\u1ed7i cho qu\u00e1 tr\u00ecnh h\u00e0n ch\u1ea3y. B\u1ed9 ph\u1eadn ch\u1ea5t l\u01b0\u1ee3ng \u0111\u1ed5 l\u1ed7i cho \u201cv\u1eadt li\u1ec7u\u201d. Trong khi \u0111\u00f3, k\u1ebb th\u00f9 th\u1ef1c s\u1ef1 c\u1ee7a b\u1ea1n l\u00e0 s\u1ef1 kh\u00f4ng \u0111\u1ed1i x\u1ee9ng - l\u1ef1c th\u1ea5m \u01b0\u1edbt kh\u00f4ng \u0111\u1ec1u, nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ec1u, l\u01b0\u1ee3ng keo h\u00e0n kh\u00f4ng \u0111\u1ec1u, thi\u1ebft k\u1ebf pad kh\u00f4ng \u0111\u1ec1u - ch\u1ed3ng ch\u1ea5t l\u00ean nhau cho \u0111\u1ebfn khi m\u1ed9t linh ki\u1ec7n 0201 quy\u1ebft \u0111\u1ecbnh \u0111\u1ee9ng th\u1eb3ng thay v\u00ec th\u1ef1c hi\u1ec7n nhi\u1ec7m v\u1ee5 c\u1ee7a m\u00ecnh.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e0 \u0111\u00fang v\u1eady, t\u00f4i s\u1ebd n\u00f3i th\u1eb3ng: n\u1ebfu b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean c\u1ee7a b\u1ea1n l\u00e0 \u201c\u0111i\u1ec1u ch\u1ec9nh l\u1ea1i m\u00e1y l\u1eafp\u201d, b\u1ea1n th\u01b0\u1eddng \u0111ang l\u00e3ng ph\u00ed h\u00e0ng gi\u1edd \u0111\u1ed3ng h\u1ed3.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00ec hi\u1ec7n t\u01b0\u1ee3ng tombstoning (chip \u0111\u1ee9ng) trong qu\u00e1 tr\u00ecnh \u0111\u1eb7t linh ki\u1ec7n hi\u1ebfm khi x\u1ea3y ra ngay t\u1ea1i v\u1ecb tr\u00ed \u0111\u1eb7t. Th\u01b0\u1eddng th\u00ec...&nbsp;<em>\u0111\u00e3 b\u1eadt<\/em>&nbsp;\u1edf \u0111\u00f3 v\u00e0&nbsp;<em>\u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n<\/em>&nbsp;trong l\u00f2 n\u01b0\u1edbng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u1eady th\u1ef1c s\u1ef1 \u0111ang x\u1ea3y ra \u0111i\u1ec1u g\u00ec?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u0111i\u1ec7n tr\u1edf\/t\u1ee5 \u0111i\u1ec7n d\u1ea1ng chip c\u00f3 hai \u0111\u1ea7u n\u1ed1i. Trong qu\u00e1 tr\u00ecnh h\u00e0n ch\u1ea3y, ch\u00ec h\u00e0n \u1edf m\u1ed9t \u0111\u1ea7u s\u1ebd b\u00e1m d\u00ednh tr\u01b0\u1edbc ho\u1eb7c k\u00e9o m\u1ea1nh h\u01a1n. \u0110\u1ea7u \u0111\u00f3 s\u1ebd c\u1ed1 \u0111\u1ecbnh. \u0110\u1ea7u c\u00f2n l\u1ea1i s\u1ebd ch\u1eadm h\u01a1n. L\u1ef1c c\u0103ng b\u1ec1 m\u1eb7t tr\u1edf th\u00e0nh m\u1ed9t c\u1ea7n c\u1ea9u nh\u1ecf. Linh ki\u1ec7n s\u1ebd xoay th\u1eb3ng \u0111\u1ee9ng. K\u1ebft qu\u1ea3 l\u00e0 b\u1ea1n c\u00f3 th\u1ec3 g\u1eb7p ph\u1ea3i m\u1ea1ch h\u1edf, v\u1ea5n \u0111\u1ec1 \u0111\u1ed9 tin c\u1eady ti\u1ec1m \u1ea9n, ho\u1eb7c c\u1ea3 hai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n s\u1ea3n xu\u1ea5t \u0111\u1ee7 s\u1ed1 l\u01b0\u1ee3ng, \u0111i\u1ec1u n\u00e0y s\u1ebd chuy\u1ec3n t\u1eeb \u201cl\u1ed7i nh\u1ecf phi\u1ec1n ph\u1ee9c\u201d th\u00e0nh \u201cs\u1ef1 c\u1ed1 c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 nghi\u1ec7p\u201d. H\u1ed3 s\u01a1 c\u1ee7a c\u01a1 quan qu\u1ea3n l\u00fd M\u1ef9 \u0111\u1ea7y r\u1eaby nh\u1eefng c\u1ea3nh b\u00e1o r\u1eb1ng l\u1ed7i m\u1ed1i h\u00e0n c\u00f3 th\u1ec3 tr\u1edf th\u00e0nh v\u1ea5n \u0111\u1ec1 an to\u00e0n - nh\u01b0 t\u00e0i li\u1ec7u thu h\u1ed3i c\u1ee7a NHTSA m\u00f4 t\u1ea3 c\u00e1c m\u1ed1i h\u00e0n b\u1ecb n\u1ee9t tr\u00ean bo m\u1ea1ch in (PCB) d\u1eabn \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 v\u1ec1 t\u1ea7m nh\u00ecn ph\u00eda sau. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \"tombstoning\", nh\u01b0ng b\u00e0i h\u1ecdc \u0111\u1ea1o \u0111\u1ee9c l\u00e0 gi\u1ed1ng nhau: quy tr\u00ecnh kh\u00f4ng \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn v\u1ea5n \u0111\u1ec1 c\u00f4ng khai. (<a href=\"https:\/\/static.nhtsa.gov\/odi\/rcl\/2024\/RCLRPT-24V879-3883.PDF?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\">static.nhtsa.gov<\/a>)<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-hard-truth-about-pick-and-place-caused-it-\">S\u1ef1 th\u1eadt ph\u0169 ph\u00e0ng v\u1ec1 vi\u1ec7c \u201cvi\u1ec7c \u0111\u1eb7t v\u00e0 l\u1ea5y \u0111\u00e3 g\u00e2y ra \u0111i\u1ec1u \u0111\u00f3\u201d<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00f4ng ngh\u1ec7 \u0111\u1eb7t v\u00e0 l\u1ea5y c\u00f3 th\u1ec3 g\u00f3p ph\u1ea7n. Nh\u01b0ng th\u01b0\u1eddng kh\u00f4ng ph\u1ea3i l\u00e0 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 th\u1ee9 t\u1ef1 \u01b0u ti\u00ean m\u00e0 t\u00f4i tin t\u01b0\u1edfng khi nh\u00ecn v\u00e0o bi\u1ec3u \u0111\u1ed3 l\u1ee3i su\u1ea5t v\u00e0 tranh lu\u1eadn v\u1edbi nh\u1eefng ng\u01b0\u1eddi mu\u1ed1n t\u00ecm ra m\u1ed9t k\u1ebb th\u00f9 duy nh\u1ea5t:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>In \u1ea5n b\u1eb1ng khu\u00f4n + Thi\u1ebft k\u1ebf khu\u00f4n in<\/strong>&nbsp;t\u1ea1o ra s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng<\/li>\n\n\n\n<li><strong>\u0110\u1ed9 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 + \u0111\u01b0\u1eddng cong t\u00e1i ch\u1ea3y<\/strong>&nbsp;T\u0103ng c\u01b0\u1eddng s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng<\/li>\n\n\n\n<li><strong>V\u1ecb tr\u00ed<\/strong>&nbsp;Ho\u1eb7c gi\u1ea3m thi\u1ec3u r\u1ee7i ro (ti\u1ebfp x\u00fac t\u1ed1t, c\u00e2n b\u1eb1ng, Z ch\u00ednh x\u00e1c) ho\u1eb7c t\u0103ng r\u1ee7i ro (l\u1ec7ch, n\u1ea3y, ti\u1ebfp x\u00fac k\u00e9m).<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c \u0111\u1ed9i nhanh nh\u1ea5t kh\u00f4ng \u201cs\u0103n l\u00f9ng c\u00e1c d\u1ea5u hi\u1ec7u l\u1ed7i\u201d. H\u1ecd t\u1ed1i \u01b0u h\u00f3a quy tr\u00ecnh s\u1ea3n xu\u1ea5t. H\u1ecd ph\u00e2n t\u00edch d\u1eef li\u1ec7u SPI. H\u1ecd so s\u00e1nh c\u00e1c l\u1ec7nh AOI v\u1edbi \u0111\u1ed9 l\u1ec7ch c\u1ee7a m\u00e1y in. H\u1ecd xem h\u1ed3 s\u01a1 h\u00e0n ch\u1ea3y nh\u01b0 m\u1ed9t th\u00ed nghi\u1ec7m c\u00f3 ki\u1ec3m so\u00e1t, kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t c\u00f4ng th\u1ee9c d\u00e2n gian.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n ch\u01b0a \u00e1p d\u1ee5ng c\u00e1ch l\u00e0m \u0111\u00f3, h\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi khung quy tr\u00ecnh n\u1ed9i b\u1ed9 c\u1ee7a ri\u00eang b\u1ea1n\u2014khung quy tr\u00ecnh n\u1ed9i b\u1ed9 c\u1ee7a b\u1ea1n.&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/process-quality\/\">Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng quy tr\u00ecnh<\/a>&nbsp;v\u00e0 s\u1ef1 k\u1ef7 lu\u1eadt nh\u00e0m ch\u00e1n nh\u01b0ng hi\u1ec7u qu\u1ea3 \u0111i k\u00e8m v\u1edbi ch\u00fang.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pickandplacemachine.com\/wp-admin\/post.php?post=1739&amp;action=edit\"><img decoding=\"async\" width=\"960\" height=\"640\" src=\"https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines1.jpg\" alt=\"M\u00e1y c\u1eaft bo m\u1ea1ch in (PCBA)\" class=\"wp-image-5544\" srcset=\"https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines1.jpg 960w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines1-300x200.jpg 300w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines1-768x512.jpg 768w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines1-18x12.jpg 18w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tombstoning-causes-in-smt-the-real-list-not-the-polite-one-\">Nguy\u00ean nh\u00e2n g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng Tombstoning trong SMT: Danh s\u00e1ch th\u1ef1c t\u1ebf (kh\u00f4ng ph\u1ea3i danh s\u00e1ch l\u1ecbch s\u1ef1)<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"1-paste-volume-imbalance-the-printer-did-it-quietly-\">1) S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng th\u1ec3 t\u00edch m\u1ef1c in (m\u00e1y in \u0111\u00e3 l\u00e0m \u0111i\u1ec1u \u0111\u00f3, m\u1ed9t c\u00e1ch im l\u1eb7ng)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t mi\u1ebfng \u0111\u1ec7m nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u keo h\u01a1n. Ho\u1eb7c keo b\u1ecb lem. Ho\u1eb7c thi\u1ebft k\u1ebf l\u1ed7 m\u1edf c\u1ee7a khu\u00f4n in cung c\u1ea5p keo cho m\u1ed9t b\u00ean kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u1eefng \u0111\u1ed1i t\u01b0\u1ee3ng vi ph\u1ea1m \u0111i\u1ec3n h\u00ecnh:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>S\u1ef1 kh\u00f4ng kh\u1edbp c\u1ee7a kh\u1ea9u \u0111\u1ed9<\/strong>&nbsp;B\u00ean tr\u00e1i so v\u1edbi b\u00ean ph\u1ea3i<\/li>\n\n\n\n<li><strong>T\u1eafc ngh\u1ebdn<\/strong>&nbsp;Tr\u00ean c\u00e1c l\u1ed7 nh\u1ecf (Lo\u1ea1i 3, gi\u1ea3 v\u1edd c\u00f3 th\u1ec3 x\u1eed l\u00fd 01005 c\u1ea3 ng\u00e0y)<\/li>\n\n\n\n<li><strong>\u00c1p l\u1ef1c\/t\u1ed1c \u0111\u1ed9 c\u1ee7a c\u00e2y lau k\u00ednh<\/strong>&nbsp;T\u1ea1o ra s\u1ef1 thi\u00ean l\u1ec7ch th\u1ec3 t\u00edch theo h\u01b0\u1edbng<\/li>\n\n\n\n<li><strong>V\u1ea5n \u0111\u1ec1 h\u1ed7 tr\u1ee3 bo m\u1ea1ch<\/strong>&nbsp;G\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng gio\u0103ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u1eef li\u1ec7u tr\u00f4ng nh\u01b0 th\u1ebf n\u00e0o:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>SPI cho th\u1ea5y m\u1ed9t pad lu\u00f4n c\u00f3 gi\u00e1 tr\u1ecb +15\u201330% so v\u1edbi pad \u0111\u1ed1i \u1ee9ng (c\u00f9ng m\u00e3 tham chi\u1ebfu, c\u00f9ng xu h\u01b0\u1edbng v\u1ecb tr\u00ed).<\/li>\n\n\n\n<li>C\u00e1c bia m\u1ed9 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp theo h\u01b0\u1edbng in (c\u1ea1nh tr\u00e1i, c\u1ea1nh sau, c\u00f9ng g\u00f3c c\u1ee7a b\u1ea3ng)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n mu\u1ed1n \u201cl\u1ed7i \u0111\u1eb7t chip \u0111\u1ee9ng\u201d \u0111\u01b0\u1ee3c kh\u1eafc ph\u1ee5c nhanh ch\u00f3ng, vi\u1ec7c tu\u00e2n th\u1ee7 quy tr\u00ecnh in l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"2-pad-design-and-copper-imbalance-your-pcb-layout-set-a-trap-\">2) Thi\u1ebft k\u1ebf pad v\u00e0 s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng \u0111\u1ed3ng (b\u1ed1 c\u1ee5c PCB c\u1ee7a b\u1ea1n \u0111\u00e3 t\u1ea1o ra m\u1ed9t v\u1ea5n \u0111\u1ec1)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c pad kh\u00f4ng th\u1ef1c s\u1ef1 \u0111\u1ed1i x\u1ee9ng. C\u00e1c v\u00f9ng \u0111\u1ed3ng d\u1eabn nhi\u1ec7t. S\u1ef1 ph\u00e2n b\u1ed1 nhi\u1ec7t kh\u00e1c nhau. C\u00e1c l\u1ed7 vias n\u1eb1m g\u1ea7n m\u1ed9t pad. \u0110\u1ecbnh ngh\u0129a l\u1edbp ph\u1ee7 h\u00e0n kh\u00e1c nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110i\u1ec1u n\u00e0y tr\u1edf n\u00ean t\u1ed3i t\u1ec7 tr\u00ean:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>0402 \u2192 0201 \u2192 01005 t\u1ef7 l\u1ec7<\/li>\n\n\n\n<li>Bo m\u1ea1ch c\u00f3 l\u1edbp \u0111\u1ed3ng d\u00e0y tr\u00ean m\u1ed9t m\u1eb7t c\u1ee7a chip<\/li>\n\n\n\n<li>Khu v\u1ef1c c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng nhi\u1ec7t h\u1ed7n h\u1ee3p (c\u00e1c thi\u1ebft b\u1ecb th\u1ee5 \u0111\u1ed9ng nh\u1ecf \u0111\u01b0\u1ee3c \u0111\u1eb7t c\u1ea1nh c\u00e1c cu\u1ed9n c\u1ea3m ho\u1eb7c b\u1ed9 k\u1ebft n\u1ed1i l\u1edbn)<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n s\u1eed d\u1ee5ng h\u00e0n kh\u00f4ng ch\u00ec SAC305 (Sn96.5\/Ag3.0\/Cu0.5), th\u1eddi gian \u01b0\u1edbt c\u1ee7a n\u00f3 \u00edt dung sai h\u01a1n so v\u1edbi h\u00e0n ch\u00ec truy\u1ec1n th\u1ed1ng SnPb. \u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 ho\u00e0i ni\u1ec7m. \u0110\u00f3 l\u00e0 v\u1eadt l\u00fd v\u00e0 c\u1eeda s\u1ed5 quy tr\u00ecnh.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"3-reflow-profile-timing-your-oven-fixed-one-defect-by-creating-another-\">3) Th\u1eddi gian c\u1ee7a quy tr\u00ecnh t\u00e1i ch\u1ea3y (l\u00f2 n\u01b0\u1edbng c\u1ee7a b\u1ea1n \u0111\u00e3 kh\u1eafc ph\u1ee5c m\u1ed9t l\u1ed7i b\u1eb1ng c\u00e1ch t\u1ea1o ra m\u1ed9t l\u1ed7i kh\u00e1c)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u1ed1c \u0111\u1ed9 t\u0103ng, th\u1eddi gian ng\u00e2m, TAL, \u0111\u1ec9nh\u2014m\u1ecdi ng\u01b0\u1eddi \u0111\u1ec1u c\u00f3 \u00fd ki\u1ebfn. H\u1ea7u h\u1ebft \u0111\u1ec1u ch\u01b0a \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Tombstoning t\u0103ng l\u00ean khi m\u1ed9t pad \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n \u01b0\u1edbt tr\u01b0\u1edbc pad c\u00f2n l\u1ea1i. C\u00e1c d\u1ed1c t\u0103ng nhi\u1ec7t \u0111\u1ed9 m\u1ea1nh v\u00e0 h\u00e0nh vi ng\u00e2m kh\u00f4ng \u0111\u1ec1u c\u00f3 th\u1ec3 l\u00e0m t\u00ecnh tr\u1ea1ng n\u00e0y tr\u1edf n\u00ean t\u1ed3i t\u1ec7 h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 v\u1edbi c\u00e1c linh ki\u1ec7n miniaturized. C\u00f3 c\u00e1c nghi\u00ean c\u1ee9u h\u1ecdc thu\u1eadt cho th\u1ea5y c\u00e1ch c\u00e1c th\u00f4ng s\u1ed1 h\u00e0n l\u1ea1i t\u01b0\u01a1ng t\u00e1c v\u1edbi qu\u00e1 tr\u00ecnh thu nh\u1ecf v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u1ed1i h\u00e0n \u2013 \u0111\u00e1ng \u0111\u1ecdc n\u1ebfu b\u1ea1n mu\u1ed1n gi\u1ea3m tranh c\u00e3i v\u00e0 c\u00f3 nhi\u1ec1u th\u00f4ng s\u1ed1 c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh h\u01a1n. V\u00ed d\u1ee5, nghi\u00ean c\u1ee9u n\u0103m 2023 v\u1ec1 c\u00e1c y\u1ebfu t\u1ed1 c\u1ee7a h\u1ed3 s\u01a1 h\u00e0n l\u1ea1i v\u00e0 qu\u00e1 tr\u00ecnh thu nh\u1ecf t\u1eadp trung v\u00e0o \u0111\u1ed9 b\u1ec1n c\u1ee7a m\u1ed1i h\u00e0n d\u01b0\u1edbi c\u00e1c h\u1ed3 s\u01a1 kh\u00e1c nhau. (<a href=\"https:\/\/link.springer.com\/article\/10.1007\/s11664-023-10340-x\" target=\"_blank\" rel=\"noopener\">B\u00e0i b\u00e1o c\u1ee7a Springer<\/a>) (<a href=\"https:\/\/link.springer.com\/article\/10.1007\/s11664-023-10340-x?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\">Springer<\/a>)<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quan \u0111i\u1ec3m kh\u00f4ng \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng c\u1ee7a t\u00f4i: Nhi\u1ec1u d\u1ef1 \u00e1n ch\u1ea1y c\u00e1c \u201cprofile nhanh\u201d v\u00ec hi\u1ec7u su\u1ea5t x\u1eed l\u00fd c\u00f3 th\u1ec3 c\u1ea3m nh\u1eadn \u0111\u01b0\u1ee3c, trong khi r\u1ee7i ro l\u1ed7i l\u1ea1i mang t\u00ednh tr\u1eebu t\u01b0\u1ee3ng. Sau \u0111\u00f3, h\u00e0ng \u0111\u1ee3i c\u00f4ng vi\u1ec7c s\u1eeda ch\u1eefa tr\u1edf th\u00e0nh n\u00fat th\u1eaft c\u1ed5 chai th\u1ef1c s\u1ef1 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"4-placement-mechanics-the-mounter-didn-t-cause-the-physics-but-it-can-trigger-it-\">4) C\u01a1 ch\u1ebf \u0111\u1eb7t v\u1eadt th\u1ec3 (thi\u1ebft b\u1ecb \u0111\u1eb7t kh\u00f4ng g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng v\u1eadt l\u00fd, nh\u01b0ng n\u00f3 c\u00f3 th\u1ec3 k\u00edch ho\u1ea1t n\u00f3)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 v\u1ecb tr\u00ed&nbsp;<em>T\u0103ng x\u00e1c su\u1ea5t tombstoning<\/em>:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>V\u1ecb tr\u00ed l\u1ec7ch t\u00e2m<\/strong>&nbsp;(m\u1ed9t \u0111\u1ea7u n\u1ed1i ch\u1ec9 ch\u1ea1m nh\u1eb9 v\u00e0o keo)<\/li>\n\n\n\n<li><strong>Chi\u1ec1u cao l\u1eafp \u0111\u1eb7t qu\u00e1 cao<\/strong>&nbsp;(th\u00e0nh ph\u1ea7n \u201cn\u1ed5i,\u201d keo kh\u00f4ng d\u00ednh \u0111\u1ec1u)<\/li>\n\n\n\n<li><strong>L\u1ef1c \u0111\u1eb7t qu\u00e1 m\u1ee9c<\/strong>&nbsp;(kem b\u00f4i \u0111\u01b0\u1ee3c b\u00f3p ra kh\u00f4ng \u0111\u1ec1u)<\/li>\n\n\n\n<li><strong>M\u00e0i m\u00f2n\/\u00f4 nhi\u1ec5m v\u00f2i phun<\/strong>&nbsp;G\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng nghi\u00eang vi m\u00f4<\/li>\n\n\n\n<li><strong>\u0110\u1eb7t linh ki\u1ec7n th\u1ee5 \u0111\u1ed9ng nh\u1ecf v\u1edbi t\u1ed1c \u0111\u1ed9 cao<\/strong>&nbsp;v\u1edbi s\u1ef1 h\u1ed7 tr\u1ee3 c\u1ee7a b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0110\u00e2y l\u00e0 v\u1ecb tr\u00ed m\u00e0 \u201cpick and place\u201d thu\u1ed9c v\u1ec1 trong c\u00e2u chuy\u1ec7n: kh\u00f4ng ph\u1ea3i l\u00e0 nghi ph\u1ea1m ch\u00ednh, m\u00e0 l\u00e0 y\u1ebfu t\u1ed1 l\u00e0m t\u0103ng nguy c\u01a1.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t c\u1ee7a b\u1ea1n k\u1ebft h\u1ee3p gi\u1eefa NPI (S\u1ea3n ph\u1ea9m m\u1edbi) v\u00e0 s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t, h\u00e3y \u0111i\u1ec1u ch\u1ec9nh c\u00e0i \u0111\u1eb7t kh\u00e1c nhau. \u0110\u1eebng gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t m\u1eabu v\u00e0 d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t c\u00f3 c\u00f9ng kho\u1ea3ng \u1ed5n \u0111\u1ecbnh. N\u1ebfu b\u1ea1n \u0111ang x\u00e2y d\u1ef1ng lo\u1ea1i linh ho\u1ea1t \u0111\u00f3, ti\u00eau chu\u1ea9n tham chi\u1ebfu c\u1ee7a b\u1ea1n n\u00ean l\u00e0 th\u1ee9 g\u00ec \u0111\u00f3 nh\u01b0&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/solution\/prototype-small-batch-lines\/\">Thi\u1ebft l\u1eadp d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p SMT cho m\u1eabu th\u1eed nghi\u1ec7m v\u00e0 s\u1ea3n xu\u1ea5t s\u1ed1 l\u01b0\u1ee3ng nh\u1ecf<\/a>&nbsp;so v\u1edbi&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/solution\/high-speed-mass-production-lines\/\">D\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t t\u1ed1c \u0111\u1ed9 cao<\/a>, v\u00ec c\u00e1c gi\u1ea3 \u0111\u1ecbnh ho\u1ea1t \u0111\u1ed9ng l\u00e0 kh\u00e1c nhau.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"5-materials-variability-the-excuse-that-sometimes-is-real-\">5) Bi\u1ebfn \u0111\u1ed9ng v\u1ec1 v\u1eadt li\u1ec7u (l\u00fd do \u0111\u00f4i khi l\u00e0 c\u00f3 th\u1eadt)<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">T\u00f4i \u0111\u00e3 th\u1ea5y r\u1eb1ng c\u00e1c linh ki\u1ec7n c\u00f3 c\u00f9ng s\u1ed1 hi\u1ec7u (same part number) c\u00f3 th\u1ec3 c\u00f3 h\u00e0nh vi kh\u00e1c nhau gi\u1eefa c\u00e1c l\u00f4 h\u00e0ng, v\u00ec qu\u00e1 tr\u00ecnh m\u1ea1 k\u1ebft th\u00fac, kh\u1ea3 n\u0103ng h\u00e0n v\u00e0 l\u1ecbch s\u1eed l\u01b0u tr\u1eef kh\u00f4ng nh\u1ea5t qu\u00e1n nh\u01b0 b\u1ed9 ph\u1eadn mua h\u00e0ng mong \u0111\u1ee3i.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Nh\u01b0ng \u0111\u1eebng v\u1ed9i k\u1ebft lu\u1eadn ngay. \u0110\u00f3 l\u00e0 c\u00e1i b\u1eaby kinh \u0111i\u1ec3n: \u0111\u1ed5 l\u1ed7i cho nh\u00e0 cung c\u1ea5p c\u00f3 th\u1ec3 mang l\u1ea1i c\u1ea3m gi\u00e1c tho\u1ea3i m\u00e1i v\u1ec1 m\u1eb7t c\u1ea3m x\u00fac, nh\u01b0ng v\u1ec1 m\u1eb7t k\u1ef9 thu\u1eadt th\u00ec \u0111\u00f3 l\u00e0 c\u00e1ch l\u00e0m thi\u1ebfu tr\u00e1ch nhi\u1ec7m.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pickandplacemachine.com\/wp-admin\/post.php?post=1641&amp;action=edit\"><img decoding=\"async\" width=\"960\" height=\"640\" src=\"https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines2.jpg\" alt=\"M\u00e1y c\u1eaft bo m\u1ea1ch in (PCBA)\" class=\"wp-image-5545\" srcset=\"https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines2.jpg 960w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines2-300x200.jpg 300w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines2-768x512.jpg 768w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines2-18x12.jpg 18w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"tombstoning-vs-skewing-vs-bridging-stop-mixing-these-up-\">Tombstoning so v\u1edbi skewing so v\u1edbi bridging (\u0111\u1eebng nh\u1ea7m l\u1eabn gi\u1eefa ch\u00fang)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tombstoning: m\u1ed9t \u0111\u1ea7u n\u00e2ng l\u00ean ho\u00e0n to\u00e0n. Skewing: chip xoay nh\u01b0ng v\u1eabn n\u1eb1m y\u00ean. Bridging: h\u00e0n n\u1ed1i c\u00e1c pad kh\u00f4ng n\u00ean \u0111\u01b0\u1ee3c n\u1ed1i v\u1edbi nhau.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u1ecd c\u00f3 chung c\u00e1c y\u1ebfu t\u1ed1 c\u01a1 b\u1ea3n (in \u1ea5n + \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i), nh\u01b0ng kh\u00f4ng chia s\u1ebb c\u00f9ng m\u1ed9t c\u01a1 ch\u1ebf ch\u00ednh. Ph\u01b0\u01a1ng ph\u00e1p s\u1eeda ch\u1eefa b\u1ea1n s\u1eed d\u1ee5ng \u0111\u1ec3 k\u1ebft n\u1ed1i (gi\u1ea3m l\u01b0\u1ee3ng keo, thu h\u1eb9p l\u1ed7 m\u1edf) c\u00f3 th\u1ec3 l\u00e0m t\u0103ng hi\u1ec7n t\u01b0\u1ee3ng tombstoning n\u1ebfu n\u00f3 t\u1ea1o ra m\u1ed9t pad c\u00f3 l\u01b0\u1ee3ng keo th\u1ea5p \u1edf m\u1ed9t b\u00ean. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao t\u1ed1i \u01b0u h\u00f3a theo m\u1ed9t ti\u00eau ch\u00ed duy nh\u1ea5t khi\u1ebfn c\u00e1c \u0111\u01b0\u1eddng d\u1eabn tr\u1edf n\u00ean kh\u00f4ng \u1ed5n \u0111\u1ecbnh.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"a-field-ready-troubleshooting-sequence-fast-not-elegant-\">M\u1ed9t quy tr\u00ecnh kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 s\u1eb5n s\u00e0ng cho th\u1ef1c \u0111\u1ecba (nhanh ch\u00f3ng, kh\u00f4ng tinh t\u1ebf)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u ng\u1eafn. B\u1eaft \u0111\u1ea7u t\u1eeb SPI.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">H\u00e3y l\u00e0m \u0111i\u1ec1u n\u00e0y nh\u01b0 th\u1ec3 b\u1ea1n \u0111\u01b0\u1ee3c tr\u1ea3 ti\u1ec1n cho k\u1ebft qu\u1ea3, kh\u00f4ng ph\u1ea3i cho l\u00fd thuy\u1ebft: l\u1ea5y 200\u2013500 v\u1ecb tr\u00ed g\u1ea7n nh\u1ea5t c\u00f3 gi\u00e1 tr\u1ecb th\u1ec3 t\u00edch\/chi\u1ec1u cao\/di\u1ec7n t\u00edch SPI cho c\u00e1c ch\u1ec9 \u0111\u1ecbnh tham chi\u1ebfu tombstoning, ph\u00e2n chia theo v\u1ecb tr\u00ed bo m\u1ea1ch, so s\u00e1nh v\u1edbi ph\u00eda m\u00e1y in\/\u0111\u1ed9 l\u1ec7ch, sau \u0111\u00f3 ki\u1ec3m tra xem c\u00e1c c\u1ee5m l\u1ed7i c\u00f3 tr\u00f9ng kh\u1edbp v\u1edbi m\u1ed9t gia \u0111\u00ecnh l\u1ed7 khu\u00f4n duy nh\u1ea5t hay m\u1ed9t khu v\u1ef1c nhi\u1ec7t duy nh\u1ea5t hay kh\u00f4ng \u2014 v\u00ec m\u1ed9t khi b\u1ea1n nh\u1eadn ra m\u00f4 h\u00ecnh, b\u1ea1n s\u1ebd ng\u1eebng \u0111\u1ed5 l\u1ed7i cho m\u00e1y m\u00f3c sai.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e2u h\u1ecfi tu t\u1eeb: T\u1ea1i sao ph\u1ea3i tranh lu\u1eadn khi b\u1ea1n c\u00f3 th\u1ec3 v\u1ea1ch ra k\u1ebf ho\u1ea1ch?<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ngo\u00e0i ra, n\u1ebfu b\u1ea1n kh\u00f4ng t\u1ef1 tin th\u1ef1c hi\u1ec7n ph\u00e2n t\u00edch \u0111\u00f3 trong n\u1ed9i b\u1ed9, h\u00e3y tham gia kh\u00f3a \u0111\u00e0o t\u1ea1o th\u1ef1c s\u1ef1 li\u00ean quan \u0111\u1ebfn vi\u1ec7c kh\u1eafc ph\u1ee5c l\u1ed7i, ch\u1ee9 kh\u00f4ng ph\u1ea3i c\u00e1c bu\u1ed5i demo b\u00e1n h\u00e0ng\u2014\u0111\u00e2y ch\u00ednh x\u00e1c l\u00e0 n\u01a1i&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/solution\/training-after-sales-support\/\">\u0110\u00e0o t\u1ea1o v\u00e0 h\u1ed7 tr\u1ee3 sau b\u00e1n h\u00e0ng<\/a>&nbsp;tr\u1ea3 l\u1ea1i.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"the-numbers-that-matter-and-what-they-tell-you-\">Nh\u1eefng con s\u1ed1 quan tr\u1ecdng (v\u00e0 nh\u1eefng g\u00ec ch\u00fang cho b\u1ea1n bi\u1ebft)<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">D\u01b0\u1edbi \u0111\u00e2y l\u00e0 m\u1ed9t b\u1ea3n \u0111\u1ed3 nguy\u00ean nh\u00e2n g\u1ed1c r\u1ec5 th\u1ef1c ti\u1ec5n. N\u00f3 kh\u00f4ng mang t\u00ednh l\u00fd thuy\u1ebft. \u0110\u00e2y l\u00e0 c\u00e1ch b\u1ea1n ph\u00e2n bi\u1ec7t t\u00edn hi\u1ec7u v\u1edbi nhi\u1ec5u tr\u00ean m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t SMT \u0111ang ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Nghi ph\u1ea1m<\/th><th>Nh\u1eefng g\u00ec b\u1ea1n th\u1ea5y t\u1ea1i AOI<\/th><th>Nh\u1eefng g\u00ec SPI \/ nh\u1eadt k\u00fd th\u01b0\u1eddng hi\u1ec3n th\u1ecb<\/th><th>Ki\u1ec3m tra nhanh<\/th><th>Ph\u00f2ng ng\u1eeba \/ kh\u1eafc ph\u1ee5c<\/th><\/tr><\/thead><tbody><tr><td>S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng th\u1ec3 t\u00edch c\u1ee7a ch\u1ea5t d\u00e1n<\/td><td>C\u00e1c bia m\u1ed9 \u0111\u01b0\u1ee3c nh\u00f3m theo khu v\u1ef1c b\u1ea3ng ho\u1eb7c h\u01b0\u1edbng in.<\/td><td>M\u1ed9t mi\u1ebfng \u0111\u1ec7m c\u00f3 th\u1ec3 t\u00edch\/chi\u1ec1u cao cao h\u01a1n m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n so v\u1edbi mi\u1ebfng \u0111\u1ec7m c\u00f2n l\u1ea1i.<\/td><td>Xoay b\u1ea3ng 180\u00b0 (n\u1ebfu c\u00f3 th\u1ec3) v\u00e0 quan s\u00e1t s\u1ef1 thay \u0111\u1ed5i c\u1ee7a m\u1eabu l\u1ed7i.<\/td><td>Thi\u1ebft k\u1ebf l\u1ea1i c\u00e1c l\u1ed7 m\u1edf, l\u00e0m s\u1ea1ch khu\u00f4n in, \u1ed5n \u0111\u1ecbnh c\u00e0i \u0111\u1eb7t c\u1ee7a d\u1ee5ng c\u1ee5 g\u1ea1t, c\u1ea3i thi\u1ec7n h\u1ed7 tr\u1ee3 b\u1ea3ng m\u1ea1ch.<\/td><\/tr><tr><td>S\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng nhi\u1ec7t gi\u1eefa pad v\u00e0 \u0111\u1ed3ng<\/td><td>Bia m\u1ed9 g\u1ea7n c\u00e1c khu v\u1ef1c \u0111\u1ed5 \u0111\u1ed3ng l\u1edbn ho\u1eb7c b\u1ed9 t\u1ea3n nhi\u1ec7t<\/td><td>SPI OK, nh\u01b0ng c\u00e1c l\u1ed7i c\u00f3 li\u00ean quan \u0111\u1ebfn c\u00e1c khu v\u1ef1c \u201cn\u00f3ng\/l\u1ea1nh\u201d.<\/td><td>Th\u00eam c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n v\u00e0o c\u1ea3 hai ch\u00e2n c\u1ee7a c\u00f9ng m\u1ed9t linh ki\u1ec7n.<\/td><td>C\u00e2n b\u1eb1ng \u0111\u1ed3ng, \u0111i\u1ec1u ch\u1ec9nh gi\u1ea3i nhi\u1ec7t, \u0111i\u1ec1u ch\u1ec9nh m\u1eabu \u0111\u1ea5t, xem x\u00e9t c\u00e1c pad \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a b\u1edfi m\u1eb7t n\u1ea1.<\/td><\/tr><tr><td>\u0110\u01b0\u1eddng d\u1ed1c m\u1ea1nh \/ Ng\u00e2m y\u1ebfu<\/td><td>Nh\u1eefng bia m\u1ed9 tr\u00f4ng ng\u1eabu nhi\u00ean, t\u1ec7 h\u01a1n n\u1eefa l\u00e0 nh\u1eefng bia m\u1ed9 nh\u1ecf b\u00e9.<\/td><td>Nh\u1eadt k\u00fd l\u00f2 n\u01b0\u1edbng cho th\u1ea5y t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t cao (v\u00ed d\u1ee5: &gt;2\u20133\u00b0C\/s) ho\u1eb7c th\u1eddi gian ng\u00e2m ng\u1eafn.<\/td><td>T\u0103ng t\u1ed1c \u0111\u1ed9 t\u1eeb t\u1eeb v\u00e0 k\u00e9o d\u00e0i th\u1eddi gian ng\u00e2m; so s\u00e1nh t\u1ef7 l\u1ec7 l\u1ed7i.<\/td><td>\u0110i\u1ec1u ch\u1ec9nh c\u1ea5u h\u00ecnh: Gi\u1ea3m \u0111\u1ed9 d\u1ed1c, c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a qu\u00e1 tr\u00ecnh ng\u00e2m, x\u00e1c minh t\u00ednh \u1ed5n \u0111\u1ecbnh c\u1ee7a TAL.<\/td><\/tr><tr><td>Sai l\u1ec7ch v\u1ecb tr\u00ed \/ gh\u1ebf ng\u1ed3i kh\u00f4ng \u0111\u00fang v\u1ecb tr\u00ed<\/td><td>Bia m\u1ed9 xu\u1ea5t hi\u1ec7n c\u00f9ng v\u1edbi c\u00e1c cu\u1ed9c g\u1ecdi li\u00ean quan \u0111\u1ebfn v\u1ecb tr\u00ed (s\u1ef1 l\u1ec7ch l\u1ea1c, ti\u1ebfp x\u00fac kh\u00f4ng \u0111\u1ee7)<\/td><td>D\u1eef li\u1ec7u v\u1ecb tr\u00ed cho th\u1ea5y s\u1ef1 l\u1ec7ch h\u1ec7 th\u1ed1ng; vi\u1ec7c b\u1ea3o tr\u00ec v\u00f2i phun \u0111\u00e3 qu\u00e1 h\u1ea1n.<\/td><td>Gi\u1ea3m t\u1ed1c \u0111\u1ed9 cho c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng b\u1ecb \u0111\u1ed9ng v\u00e0 ki\u1ec3m tra l\u1ea1i \u0111\u1ed9 cao Z \/ l\u1ef1c.<\/td><td>V\u1ecb tr\u00ed \u0111\u1eb7t trung t\u00e2m, duy tr\u00ec v\u00f2i phun, \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 cao\/l\u1ef1c \u0111\u1eb7t, c\u1ea3i thi\u1ec7n vi\u1ec7c k\u1eb9p b\u1ea3ng m\u1ea1ch.<\/td><\/tr><tr><td>H\u00f3a h\u1ecdc keo d\u00e1n \/ Kh\u1ea3 n\u0103ng h\u00e0n<\/td><td>S\u1ed1 l\u01b0\u1ee3ng l\u1ed7i t\u0103ng \u0111\u1ed9t bi\u1ebfn sau khi thay \u0111\u1ed5i lo\u1ea1i keo d\u00e1n ho\u1eb7c l\u00f4 v\u1eadt li\u1ec7u.<\/td><td>SPI \u0111\u00f4i khi b\u00ecnh th\u01b0\u1eddng; th\u1eddi gian th\u1ea5m \u01b0\u1edbt thay \u0111\u1ed5i.<\/td><td>Quay l\u1ea1i l\u00f4\/d\u00e1n tr\u01b0\u1edbc \u0111\u00f3; th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m A\/B.<\/td><td>Th\u1eaft ch\u1eb7t c\u00e1c quy \u0111\u1ecbnh v\u1ec1 ki\u1ec3m so\u00e1t \u0111\u1ea7u v\u00e0o, quy t\u1eafc l\u01b0u tr\u1eef, theo d\u00f5i tu\u1ed5i th\u1ecd c\u1ee7a keo d\u00e1n, x\u00e1c minh kh\u1ea3 n\u0103ng h\u00e0n.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">M\u1ed9t \u0111i\u1ec3m \u201cs\u1ef1 th\u1eadt kh\u00f3 kh\u0103n\u201d n\u1eefa: s\u1ef1 c\u1ed1 v\u1ec1 \u0111\u1ed9 tin c\u1eady c\u1ee7a m\u1ed1i h\u00e0n kh\u00f4ng ch\u1edd \u0111\u1ee3i m\u1ed9t c\u00e1ch l\u1ecbch s\u1ef1. M\u1ed9t b\u00e0i \u0111\u00e1nh gi\u00e1 n\u0103m 2024 trong&nbsp;<em>V\u1eadt li\u1ec7u<\/em>&nbsp;B\u00e0i vi\u1ebft nh\u1ea5n m\u1ea1nh r\u1eb1ng c\u00e1c c\u01a1 ch\u1ebf h\u1ecfng h\u00f3c li\u00ean quan \u0111\u1ebfn m\u1ed1i h\u00e0n l\u00e0 nguy\u00ean nh\u00e2n ch\u00ednh g\u00e2y ra s\u1ef1 c\u1ed1 trong \u0111\u00f3ng g\u00f3i v\u00e0 l\u1eafp r\u00e1p \u0111i\u1ec7n t\u1eed, v\u00e0 n\u00f3 l\u00e0m r\u00f5 t\u1ea1i sao vi\u1ec7c ki\u1ec3m so\u00e1t quy tr\u00ecnh s\u1ea3n xu\u1ea5t l\u1ea1i quan tr\u1ecdng h\u01a1n c\u1ea3 kh\u00eda c\u1ea1nh th\u1ea9m m\u1ef9. (<a href=\"https:\/\/www.mdpi.com\/1996-1944\/17\/10\/2365\" target=\"_blank\" rel=\"noopener\">B\u00e0i b\u00e1o c\u1ee7a MDPI<\/a>) (<a href=\"https:\/\/www.mdpi.com\/1996-1944\/17\/10\/2365?utm_source=chatgpt.com\" target=\"_blank\" rel=\"noopener\">MDPI<\/a>)<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/pickandplacemachine.com\/wp-admin\/post.php?post=1542&amp;action=edit\"><img decoding=\"async\" width=\"960\" height=\"640\" src=\"https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines3.jpg\" alt=\"M\u00e1y c\u1eaft bo m\u1ea1ch in (PCBA)\" class=\"wp-image-5546\" srcset=\"https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines3.jpg 960w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines3-300x200.jpg 300w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines3-768x512.jpg 768w, https:\/\/pickandplacemachine.com\/wp-content\/uploads\/2026\/01\/PCBA-Cutting-Machines3-18x12.jpg 18w\" sizes=\"(max-width: 960px) 100vw, 960px\" \/><\/a><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"prevention-methods-that-survive-scale\">C\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00f2ng ng\u1eeba c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng tr\u00ean quy m\u00f4 l\u1edbn<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"make-symmetry-boring-again\">L\u00e0m cho s\u1ef1 \u0111\u1ed1i x\u1ee9ng tr\u1edf n\u00ean nh\u00e0m ch\u00e1n m\u1ed9t l\u1ea7n n\u1eefa<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110i\u1ec1u ch\u1ec9nh kh\u1ea9u \u0111\u1ed9 tr\u00e1i\/ph\u1ea3i cho c\u00e1c th\u00e0nh ph\u1ea7n th\u1ee5 \u0111\u1ed9ng tr\u1eeb khi b\u1ea1n&nbsp;<em>ch\u1ee9ng minh<\/em>&nbsp;B\u1ea1n c\u1ea7n s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng c\u00f3 ch\u1ee7 \u0111\u00edch.<\/li>\n\n\n\n<li>S\u1eed d\u1ee5ng gi\u1edbi h\u1ea1n SPI so s\u00e1nh gi\u1eefa c\u00e1c ch\u00e2n, kh\u00f4ng ch\u1ec9 d\u1ef1a tr\u00ean m\u1ee9c \u00e2m l\u01b0\u1ee3ng tuy\u1ec7t \u0111\u1ed1i.<\/li>\n\n\n\n<li>Ph\u00e2n lo\u1ea1i keo d\u00e1n theo l\u1edbp thi\u1ebft k\u1ebf (Lo\u1ea1i 4\/5 cho keo si\u00eau m\u1ecbn; kh\u00f4ng n\u00ean c\u1ed1 g\u1eafng s\u1eed d\u1ee5ng keo kh\u00f4ng ph\u00f9 h\u1ee3p m\u1ed9t c\u00e1ch mi\u1ec5n c\u01b0\u1ee1ng)<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"tune-reflow-like-an-experiment-not-a-tradition\">H\u00e3y \u0111i\u1ec1u ch\u1ec9nh qu\u00e1 tr\u00ecnh t\u00e1i ch\u1ea3y nh\u01b0 m\u1ed9t th\u00ed nghi\u1ec7m, kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t truy\u1ec1n th\u1ed1ng.<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0110\u1eb7t c\u00e1c c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n tr\u00ean c\u1ea3 hai pad c\u1ee7a c\u00f9ng m\u1ed9t chip trong khu v\u1ef1c c\u00f3 v\u1ea5n \u0111\u1ec1.<\/li>\n\n\n\n<li>T\u1ed1i \u01b0u h\u00f3a cho s\u1ef1 \u0111\u1ed3ng b\u1ed9 h\u00f3a qu\u00e1 tr\u00ecnh th\u1ea5m \u01b0\u1edbt, kh\u00f4ng ch\u1ec9 t\u1eadp trung v\u00e0o nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh.<\/li>\n\n\n\n<li>X\u00e1c minh c\u00e1c thay \u0111\u1ed5i d\u1ef1a tr\u00ean t\u1ef7 l\u1ec7 l\u1ed7i v\u00e0 d\u1eef li\u1ec7u v\u1ec1 \u0111\u1ed9 b\u1ec1n k\u00e9o\/\u0111\u1ed9 b\u1ec1n c\u1eaft khi c\u00f3 th\u1ec3.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"treat-pick-and-place-as-a-precision-system-reminder-it-drifts\">Xem h\u1ec7 th\u1ed1ng pick-and-place nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng ch\u00ednh x\u00e1c, l\u01b0u \u00fd: n\u00f3 c\u00f3 th\u1ec3 b\u1ecb l\u1ec7ch.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n \u0111ang s\u1eed d\u1ee5ng m\u00e1y in Yamaha, Panasonic, JUKI, Hanwha, Fuji\u2014kh\u00f4ng quan tr\u1ecdng\u2014c\u00e1c m\u1eabu l\u1ec7ch c\u00f3 th\u1ec3 kh\u00e1c nhau, nh\u01b0ng hi\u1ec7n t\u01b0\u1ee3ng l\u1ec7ch v\u1eabn t\u1ed3n t\u1ea1i. V\u00f2i phun b\u1ecb m\u00f2n. B\u1ed9 c\u1ea5p li\u1ec7u l\u00e3o h\u00f3a. Calibration Z kh\u00f4ng ph\u1ea3i l\u00e0 v\u0129nh vi\u1ec5n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e0 \u0111\u00e2y ch\u00ednh l\u00e0 l\u00fac nh\u1eefng l\u1eddi h\u1ee9a \u201cch\u00fang t\u00f4i s\u1ebd gi\u00fap b\u1ea1n\u201d c\u1ee7a nh\u00e0 cung c\u1ea5p \u0111\u01b0\u1ee3c ki\u1ec3m ch\u1ee9ng. N\u1ebfu b\u1ea1n quan t\u00e2m \u0111\u1ebfn c\u00e1ch th\u1ee9c h\u1ed7 tr\u1ee3 th\u1ef1c s\u1ef1 ho\u1ea1t \u0111\u1ed9ng, h\u00e3y \u0111\u1ecdc ph\u1ea7n&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/service-promise\/\">Cam k\u1ebft d\u1ecbch v\u1ee5<\/a>&nbsp;v\u1edbi c\u00f9ng s\u1ef1 ho\u00e0i nghi m\u00e0 b\u1ea1n \u00e1p d\u1ee5ng cho c\u00e1c t\u00e0i li\u1ec7u qu\u1ea3ng c\u00e1o v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c \u0111\u1eb7t h\u00e0ng.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"document-the-fix-so-it-sticks\">Ghi ch\u00e9p l\u1ea1i c\u00e1ch kh\u1eafc ph\u1ee5c \u0111\u1ec3 n\u00f3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e2u d\u00e0i.<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa m\u1ed9t quy tr\u00ecnh t\u1ed1t v\u00e0 m\u1ed9t quy tr\u00ecnh l\u1ed9n x\u1ed9n n\u1eb1m \u1edf vi\u1ec7c li\u1ec7u gi\u1ea3i ph\u00e1p \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng c\u00f3 tr\u1edf th\u00e0nh ti\u00eau chu\u1ea9n hay kh\u00f4ng. N\u1ebfu b\u1ea1n mu\u1ed1n gi\u1ea3m thi\u1ec3u c\u00e1c l\u1ed7i l\u1eb7p l\u1ea1i, h\u00e3y tr\u00ecnh b\u00e0y d\u1eef li\u1ec7u cho \u0111\u1ed9i ng\u0169 v\u00e0 l\u01b0u tr\u1eef b\u1eb1ng ch\u1ee9ng trong c\u01a1 s\u1edf ki\u1ebfn th\u1ee9c n\u1ed9i b\u1ed9 c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n c\u1ea7n c\u00e1c quy tr\u00ecnh l\u00e0m vi\u1ec7c tham kh\u1ea3o, c\u1ee7a ri\u00eang b\u1ea1n&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/solution\/turnkey-smt-line-solutions\/\">Gi\u1ea3i ph\u00e1p d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t SMT tr\u1ecdn g\u00f3i<\/a>&nbsp;T\u00e0i li\u1ec7u ph\u1ea3i bao g\u1ed3m quy tr\u00ecnh \u0111\u00f3ng l\u1ed7i, kh\u00f4ng ch\u1ec9 danh s\u00e1ch thi\u1ebft b\u1ecb.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"faqs\">C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-is-tombstoning-chip-standing-in-smt-\">Tombstoning (chip standing) trong SMT l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tombstoning l\u00e0 m\u1ed9t l\u1ed7i h\u00e0n ch\u1ea3y l\u1ea1i x\u1ea3y ra khi m\u1ed9t linh ki\u1ec7n th\u1ee5 \u0111\u1ed9ng nh\u1ecf (th\u01b0\u1eddng l\u00e0 \u0111i\u1ec7n tr\u1edf chip ho\u1eb7c t\u1ee5 \u0111i\u1ec7n) b\u1ecb n\u00e2ng l\u00ean v\u00e0 \u0111\u1ee9ng th\u1eb3ng do h\u00e0n ch\u1ea3y \u01b0\u1edbt m\u1ed9t \u0111\u1ea7u s\u1edbm h\u01a1n ho\u1eb7c k\u00e9o m\u1ea1nh h\u01a1n, t\u1ea1o ra m\u1ed9t l\u1ef1c xo\u1eafn do s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t kh\u00f4ng c\u00e2n b\u1eb1ng, khi\u1ebfn linh ki\u1ec7n xoay v\u00e0o v\u1ecb tr\u00ed th\u1eb3ng \u0111\u1ee9ng v\u00e0 \u0111\u1ec3 l\u1ea1i m\u1ea1ch h\u1edf. Sau \u0111\u1ecbnh ngh\u0129a \u0111\u00f3, \u0111i\u1ec3m ch\u00ednh l\u00e0: tombstoning l\u00e0 m\u1ed9t&nbsp;<em>th\u1eddi gian<\/em>&nbsp;v\u00e0&nbsp;<em>\u0111\u1ed1i x\u1ee9ng<\/em>&nbsp;V\u1ea5n \u0111\u1ec1. C\u00e1c gi\u1ea3i ph\u00e1p kh\u00f4i ph\u1ee5c \u0111\u1ed9 \u1ea9m \u0111\u1ec1u \u0111\u1eb7n \u1edf c\u1ea3 hai \u0111\u1ea7u th\u01b0\u1eddng mang l\u1ea1i k\u1ebft qu\u1ea3 t\u1ed1t.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"why-do-chips-tombstone-during-reflow-\">T\u1ea1i sao chip b\u1ecb h\u1ecfng trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Chip b\u1ecb nghi\u00eang trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i do hai \u0111\u1ea7u n\u1ed1i tr\u1ea3i qua l\u1ef1c \u01b0\u1edbt v\u00e0 th\u1eddi gian \u01b0\u1edbt kh\u00e1c nhau, th\u01b0\u1eddng do th\u1ec3 t\u00edch keo h\u00e0n kh\u00f4ng \u0111\u1ec1u, nhi\u1ec7t \u0111\u1ed9 pad\/\u0111\u1ed3ng kh\u00f4ng \u0111\u1ec1u ho\u1eb7c h\u1ed3 s\u01a1 h\u00e0n l\u1ea1i khi\u1ebfn m\u1ed9t b\u00ean \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 n\u00f3ng ch\u1ea3y v\u00e0 \u01b0\u1edbt tr\u01b0\u1edbc, cho ph\u00e9p s\u1ee9c c\u0103ng b\u1ec1 m\u1eb7t xoay linh ki\u1ec7n v\u1ec1 v\u1ecb tr\u00ed th\u1eb3ng \u0111\u1ee9ng. N\u1ebfu b\u1ea1n mu\u1ed1n b\u1eb1ng ch\u1ee9ng, h\u00e3y \u0111\u1eb7t c\u1ea3m bi\u1ebfn nhi\u1ec7t tr\u00ean c\u1ea3 hai pad c\u1ee7a c\u00f9ng m\u1ed9t chip v\u00e0 so s\u00e1nh th\u1eddi gian \u01b0\u1edbt sau khi \u0111i\u1ec1u ch\u1ec9nh h\u1ed3 s\u01a1 h\u00e0n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"is-tombstoning-caused-by-pick-and-place-accuracy-or-reflow-\">Tombstoning c\u00f3 ph\u1ea3i do \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1eb7t linh ki\u1ec7n hay do qu\u00e1 tr\u00ecnh h\u00e0n ch\u1ea3y kh\u00f4ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tombstoning ch\u1ee7 y\u1ebfu l\u00e0 m\u1ed9t khuy\u1ebft t\u1eadt m\u1ea5t c\u00e2n b\u1eb1ng \u0111\u1ed9 \u1ea9m ph\u00e1t sinh trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i, trong khi \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1eb7t linh ki\u1ec7n v\u00e0 c\u01a1 ch\u1ebf \u0111\u1eb7t linh ki\u1ec7n ch\u1ee7 y\u1ebfu \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn x\u00e1c su\u1ea5t x\u1ea3y ra khuy\u1ebft t\u1eadt n\u00e0y b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i m\u1ee9c \u0111\u1ed9 ti\u1ebfp x\u00fac c\u1ee7a m\u1ed7i \u0111\u1ea7u n\u1ed1i v\u1edbi keo h\u00e0n v\u00e0 m\u1ee9c \u0111\u1ed9 \u0111\u1ed1i x\u1ee9ng c\u1ee7a \u0111i\u1ec1u ki\u1ec7n ban \u0111\u1ea7u khi b\u1ea3ng m\u1ea1ch \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o l\u00f2 h\u00e0n. V\u00ec v\u1eady, vi\u1ec7c \u0111\u1eb7t linh ki\u1ec7n l\u00e0 quan tr\u1ecdng, nh\u01b0ng l\u00f2 h\u00e0n m\u1edbi l\u00e0 n\u01a1i x\u1ea3y ra qu\u00e1 tr\u00ecnh \u201c\u0111\u1ee9ng l\u00ean\u201d c\u1ee7a linh ki\u1ec7n.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"what-s-the-best-reflow-profile-to-reduce-tombstoning-\">Profil t\u00e1i nung n\u00e0o l\u00e0 t\u1ed1t nh\u1ea5t \u0111\u1ec3 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng tombstoning?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Profil t\u00e1i nung t\u1ed1t nh\u1ea5t \u0111\u1ec3 gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng tombstoning l\u00e0 profil \u0111\u1ed3ng b\u1ed9 h\u00f3a qu\u00e1 tr\u00ecnh th\u1ea5m \u01b0\u1edbt tr\u00ean c\u1ea3 hai pad b\u1eb1ng c\u00e1ch ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t, \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u c\u1ee7a qu\u00e1 tr\u00ecnh ng\u00e2m v\u00e0 th\u1eddi gian \u1edf tr\u00ean nhi\u1ec7t \u0111\u1ed9 l\u1ecfng, sao cho c\u1ea3 hai \u0111\u1ea7u c\u1ee7a chip kh\u00f4ng \u0111\u1ea1t \u0111i\u1ec1u ki\u1ec7n th\u1ea5m \u01b0\u1edbt m\u1ea1nh h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi \u0111\u1ea7u c\u00f2n l\u1ea1i, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n 0201\/01005. Tr\u00ean th\u1ef1c t\u1ebf, c\u00e1c \u0111\u1ed9i th\u01b0\u1eddng gi\u1ea3m \u0111\u1ed9 m\u1ea1nh c\u1ee7a qu\u00e1 tr\u00ecnh t\u0103ng nhi\u1ec7t v\u00e0 \u1ed5n \u0111\u1ecbnh qu\u00e1 tr\u00ecnh ng\u00e2m \u0111\u1ec3 gi\u1ea3m ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa c\u00e1c pad.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-do-i-troubleshoot-tombstoning-fast-on-a-running-line-\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 tombstoning nhanh ch\u00f3ng tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t \u0111ang ho\u1ea1t \u0111\u1ed9ng?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">C\u00e1ch nhanh nh\u1ea5t \u0111\u1ec3 kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 tombstoning l\u00e0 so s\u00e1nh c\u00e1c b\u00e1o c\u00e1o l\u1ed7i AOI v\u1edbi s\u1ef1 m\u1ea5t c\u00e2n b\u1eb1ng v\u1ec1 th\u1ec3 t\u00edch\/chi\u1ec1u cao gi\u1eefa c\u00e1c pad SPI v\u00e0 s\u1ef1 t\u1eadp trung v\u1ecb tr\u00ed tr\u00ean b\u1ea3ng m\u1ea1ch, sau \u0111\u00f3 th\u1ef1c hi\u1ec7n m\u1ed9t th\u1eed nghi\u1ec7m A\/B c\u00f3 ki\u1ec3m so\u00e1t ch\u1ec9 thay \u0111\u1ed5i m\u1ed9t bi\u1ebfn s\u1ed1 (c\u00e0i \u0111\u1eb7t m\u00e1y in, t\u1ea7n su\u1ea5t l\u00e0m s\u1ea1ch l\u1ed7 m\u1edf, ho\u1eb7c \u0111\u1ed9 d\u1ed1c\/th\u1eddi gian ng\u00e2m trong qu\u00e1 tr\u00ecnh h\u00e0n l\u1ea1i) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh thay \u0111\u1ed5i n\u00e0o l\u00e0m ph\u00e1 v\u1ee1 m\u00f4 h\u00ecnh. N\u1ebfu b\u1ea1n kh\u00f4ng th\u1ec3 v\u1ebd \u0111\u1ed3 th\u1ecb, b\u1ea1n \u0111ang \u0111o\u00e1n m\u00f2. N\u1ebfu b\u1ea1n c\u00f3 th\u1ec3 v\u1ebd \u0111\u1ed3 th\u1ecb, b\u1ea1n \u0111\u00e3 g\u1ea7n \u0111\u00fang.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"how-is-tombstoning-different-from-skewing-and-bridging-\">S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa tombstoning, skewing v\u00e0 bridging l\u00e0 g\u00ec?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Tombstoning l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng n\u00e2ng th\u1eb3ng \u0111\u1ee9ng c\u1ee7a m\u1ed9t \u0111\u1ea7u n\u1ed1i do l\u1ef1c \u01b0\u1edbt kh\u00f4ng c\u00e2n b\u1eb1ng g\u00e2y ra, skewing l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng xoay ngang trong khi th\u00e0nh ph\u1ea7n v\u1eabn n\u1eb1m y\u00ean (th\u01b0\u1eddng do sai l\u1ec7ch v\u1ecb tr\u00ed \u0111\u1eb7t ho\u1eb7c l\u1edbp keo kh\u00f4ng \u0111\u1ec1u), v\u00e0 bridging l\u00e0 hi\u1ec7n t\u01b0\u1ee3ng ch\u1eadp \u0111i\u1ec7n khi h\u00e0n k\u1ebft n\u1ed1i c\u00e1c pad li\u1ec1n k\u1ec1 do th\u1ec3 t\u00edch keo, kho\u1ea3ng c\u00e1ch pad ho\u1eb7c h\u00e0nh vi t\u00e1i ch\u1ea3y cho ph\u00e9p h\u00e0n h\u1ee3p nh\u1ea5t. Nh\u1ea7m l\u1eabn gi\u1eefa c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y s\u1ebd l\u00e3ng ph\u00ed th\u1eddi gian v\u00ec \u201cgi\u1ea3i ph\u00e1p t\u1ed1t nh\u1ea5t\u201d cho m\u1ed9t v\u1ea5n \u0111\u1ec1 c\u00f3 th\u1ec3 l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam v\u1ea5n \u0111\u1ec1 kh\u00e1c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">K\u1ebft lu\u1eadn<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">N\u1ebfu b\u1ea1n mu\u1ed1n, h\u00e3y g\u1eedi cho t\u00f4i k\u00edch th\u01b0\u1edbc linh ki\u1ec7n (0402\/0201\/01005), h\u1ee3p kim h\u00e0n (SAC305 so v\u1edbi SnPb), lo\u1ea1i keo h\u00e0n (Lo\u1ea1i 3\/4\/5) v\u00e0 th\u00f4ng s\u1ed1 hi\u1ec7n t\u1ea1i c\u1ee7a b\u1ea1n v\u1ec1 ramp\/soak\/TAL. T\u00f4i s\u1ebd cho b\u1ea1n bi\u1ebft nh\u1eefng g\u00ec t\u00f4i s\u1ebd ki\u1ec3m tra tr\u01b0\u1edbc ti\u00ean\u2014v\u00e0 nh\u1eefng g\u00ec t\u00f4i s\u1ebd b\u1ecf qua. B\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u00e2y:&nbsp;<a href=\"https:\/\/pickandplacemachine.com\/contact\/\">Li\u00ean h\u1ec7 v\u1edbi \u0111\u1ed9i ng\u0169 c\u1ee7a ch\u00fang t\u00f4i<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Tombstoning tr\u00f4ng gi\u1ed1ng nh\u01b0 m\u1ed9t v\u1ea5n \u0111\u1ec1 v\u1ec1 v\u1ecb tr\u00ed, nh\u01b0ng th\u01b0\u1eddng kh\u00f4ng ph\u1ea3i v\u1eady. B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch nguy\u00ean nh\u00e2n th\u1ef1c s\u1ef1 c\u1ee7a s\u1ef1 c\u1ed1, c\u00e1c t\u00edn hi\u1ec7u d\u1eef li\u1ec7u \u0111\u1eb7c tr\u01b0ng v\u00e0 c\u00e1c gi\u1ea3i ph\u00e1p hi\u1ec7u qu\u1ea3 tr\u00ean d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t.<\/p>","protected":false},"author":1,"featured_media":5544,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":""},"categories":[837],"tags":[960,958,959,962,961,917],"class_list":["post-5542","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-process-quality","tag-0201-assembly","tag-pick-and-place-setup","tag-reflow-soldering-profile","tag-root-cause-analysis","tag-smt-tombstoning","tag-solder-paste-printing"],"blocksy_meta":[],"_links":{"self":[{"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/posts\/5542","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/comments?post=5542"}],"version-history":[{"count":4,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/posts\/5542\/revisions"}],"predecessor-version":[{"id":6399,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/posts\/5542\/revisions\/6399"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/media\/5544"}],"wp:attachment":[{"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/media?parent=5542"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/categories?post=5542"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pickandplacemachine.com\/vi\/wp-json\/wp\/v2\/tags?post=5542"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}