{"id":1149,"date":"2026-08-09T04:57:59","date_gmt":"2026-08-09T04:57:59","guid":{"rendered":"https:\/\/hnjenten.com\/?p=1149"},"modified":"2026-09-11T13:12:34","modified_gmt":"2026-09-11T13:12:34","slug":"understanding-eia-481-d-standards-for-carrier-tape","status":"publish","type":"post","link":"https:\/\/jinyingteng.com\/vi\/understanding-eia-481-d-standards-for-carrier-tape\/","title":{"rendered":"Hi\u1ec3u v\u1ec1 Ti\u00eau chu\u1ea9n EIA-481-D d\u00e0nh cho b\u0103ng mang"},"content":{"rendered":"

Hi\u1ec3u v\u1ec1 Ti\u00eau chu\u1ea9n EIA-481-D d\u00e0nh cho b\u0103ng mang<\/h1>\n\n\n\n
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\"\"<\/figure>\n<\/figure>\n\n\n\n

EIA-481-D l\u00e0 ti\u00eau chu\u1ea9n c\u01a1 b\u1ea3n gi\u00fap cho vi\u1ec7c l\u1eafp r\u00e1p \u0111i\u1ec7n t\u1eed t\u1ef1 \u0111\u1ed9ng tr\u1edf n\u00ean kh\u1ea3 thi.<\/strong> Ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh c\u00e1c k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd, dung sai v\u00e0 quy t\u1eafc \u0111\u1ecbnh h\u01b0\u1edbng \u0111\u1ed1i v\u1edbi b\u0103ng mang c\u00f3 hoa v\u0103n n\u1ed5i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00f3ng g\u00f3i c\u00e1c linh ki\u1ec7n g\u1eafn b\u1ec1 m\u1eb7t d\u00e0nh cho thi\u1ebft b\u1ecb \u0111\u1eb7t linh ki\u1ec7n t\u1ed1c \u0111\u1ed9 cao. N\u1ebfu kh\u00f4ng c\u00f3 ti\u00eau chu\u1ea9n n\u00e0y, m\u1ed7i nh\u00e0 s\u1ea3n xu\u1ea5t linh ki\u1ec7n s\u1ebd s\u1ea3n xu\u1ea5t ra lo\u1ea1i b\u0103ng kh\u00f4ng t\u01b0\u01a1ng th\u00edch v\u1edbi c\u00e1c m\u00e1y \u0111\u1eb7t linh ki\u1ec7n kh\u00e1c. Zhengzhou Jinyingteng (Henan Jenten) thi\u1ebft k\u1ebf thi\u1ebft b\u1ecb t\u1ea1o h\u00ecnh b\u0103ng mang nh\u1eb1m \u0111\u00e1p \u1ee9ng v\u00e0 v\u01b0\u1ee3t qua c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n EIA-481-D v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 t\u00ednh nh\u1ea5t qu\u00e1n.<\/p>\n\n\n\n

N\u1ed9i dung c\u1ee7a bi\u1ec3u m\u1eabu EIA-481-D<\/h2>\n\n\n\n

Ti\u00eau chu\u1ea9n EIA-481-D, do Li\u00ean minh C\u00f4ng nghi\u1ec7p \u0110i\u1ec7n t\u1eed (hi\u1ec7n l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a Hi\u1ec7p h\u1ed9i C\u00f4ng nghi\u1ec7p Linh ki\u1ec7n \u0110i\u1ec7n t\u1eed) ban h\u00e0nh, quy \u0111\u1ecbnh ti\u00eau chu\u1ea9n v\u1ec1 vi\u1ec7c \u0111\u00f3ng g\u00f3i tr\u00ean b\u0103ng mang c\u00f3 hoa v\u0103n n\u1ed5i d\u00e0nh cho c\u00e1c linh ki\u1ec7n g\u1eafn b\u1ec1 m\u1eb7t nh\u1eb1m ph\u1ee5c v\u1ee5 qu\u00e1 tr\u00ecnh x\u1eed l\u00fd t\u1ef1 \u0111\u1ed9ng. Ti\u00eau chu\u1ea9n n\u00e0y \u0111\u1ec1 c\u1eadp \u0111\u1ebfn to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng b\u0103ng v\u00e0 cu\u1ed9n: b\u0103ng mang gi\u1eef c\u00e1c linh ki\u1ec7n, b\u0103ng ph\u1ee7 d\u00f9ng \u0111\u1ec3 ni\u00eam phong, cu\u1ed9n m\u00e0 b\u0103ng \u0111\u01b0\u1ee3c qu\u1ea5n v\u00e0o, c\u00f9ng c\u00e1c \u0111o\u1ea1n \u0111\u1ea7u v\u00e0 cu\u1ed1i b\u0103ng gi\u00fap m\u00e1y m\u00f3c c\u00f3 th\u1ec3 n\u1ea1p linh ki\u1ec7n.<\/p>\n\n\n\n

Ti\u00eau chu\u1ea9n n\u00e0y ch\u1ec9 quy \u0111\u1ecbnh c\u00e1c th\u00f4ng s\u1ed1 c\u01a1 h\u1ecdc. Ti\u00eau chu\u1ea9n n\u00e0y kh\u00f4ng quy \u0111\u1ecbnh c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n, h\u00e0nh vi nhi\u1ec7t hay kh\u1ea3 n\u0103ng h\u00e0n c\u1ee7a ch\u00ednh c\u00e1c linh ki\u1ec7n. M\u1ee5c \u0111\u00edch c\u1ee7a ti\u00eau chu\u1ea9n l\u00e0 thi\u1ebft l\u1eadp m\u1ed9t giao di\u1ec7n c\u01a1 h\u1ecdc th\u1ed1ng nh\u1ea5t nh\u1eb1m \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t linh ki\u1ec7n, c\u00e1c b\u1ed9 n\u1ea1p SMT v\u00e0 thi\u1ebft b\u1ecb l\u1eafp \u0111\u1eb7t tr\u00ean to\u00e0n c\u1ea7u.<\/p>\n\n\n\n

C\u00e1c y\u00eau c\u1ea7u ch\u00ednh v\u1ec1 k\u00edch th\u01b0\u1edbc<\/h2>\n\n\n\n

Kho\u1ea3ng c\u00e1ch l\u1ed7 b\u00e1nh r\u0103ng v\u00e0 dung sai t\u00edch l\u0169y<\/h3>\n\n\n\n

Kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c l\u1ed7 d\u1eabn \u0111\u1ed9ng (Po) \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a \u1edf m\u1ee9c 4,00 mm, x\u00e1c \u0111\u1ecbnh \u0111\u1ed9 ti\u1ebfn c\u1ee7a b\u0103ng trong m\u1ed7i chu k\u1ef3 \u0111\u1ecbnh v\u1ecb c\u1ee7a b\u1ed9 n\u1ea1p. C\u00e1c l\u1ed7 d\u1eabn \u0111\u1ed9ng c\u00f3 \u0111\u01b0\u1eddng k\u00ednh danh ngh\u0129a l\u00e0 1,50 mm v\u1edbi c\u00e1c dung sai \u0111\u01b0\u1ee3c quy \u0111\u1ecbnh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u1edbp n\u1ed1i ch\u1eafc ch\u1eafn v\u1edbi c\u00e1c b\u00e1nh xe d\u1eabn \u0111\u1ed9ng c\u1ee7a b\u1ed9 n\u1ea1p.<\/p>\n\n\n\n

Dung sai t\u00edch l\u0169y l\u00e0 th\u00f4ng s\u1ed1 quan tr\u1ecdng. Ti\u00eau chu\u1ea9n EIA-481-D quy \u0111\u1ecbnh r\u1eb1ng b\u1ea5t k\u1ef3 m\u01b0\u1eddi l\u1ed7 r\u0103ng c\u01b0a li\u00ean ti\u1ebfp n\u00e0o c\u0169ng ph\u1ea3i duy tr\u00ec sai s\u1ed1 t\u00edch l\u0169y trong kho\u1ea3ng \u00b10,2 mm. Ch\u00ednh gi\u00e1 tr\u1ecb \u0111o l\u01b0\u1eddng t\u00edch l\u0169y n\u00e0y, ch\u1ee9 kh\u00f4ng ph\u1ea3i dung sai c\u1ee7a t\u1eebng l\u1ed7 ri\u00eang l\u1ebb, m\u1edbi quy\u1ebft \u0111\u1ecbnh li\u1ec7u b\u1ed9 n\u1ea1p c\u00f3 duy tr\u00ec \u0111\u01b0\u1ee3c \u0111\u1ed9 ch\u00ednh x\u00e1c v\u1ecb tr\u00ed d\u1ecdc theo chi\u1ec1u d\u00e0i b\u0103ng hay kh\u00f4ng.<\/p>\n\n\n\n

K\u00edch th\u01b0\u1edbc t\u00fai v\u00e0 kho\u1ea3ng tr\u1ed1ng gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn<\/h3>\n\n\n\n

Khoang \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi A0 (chi\u1ec1u r\u1ed9ng t\u00fai), B0 (chi\u1ec1u d\u00e0i t\u00fai) v\u00e0 T (chi\u1ec1u s\u00e2u) ph\u1ea3i bao quanh chi ti\u1ebft v\u1edbi kho\u1ea3ng tr\u1ed1ng \u0111\u1ee7 l\u1edbn \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u c\u1ee5 th\u1ec3:<\/p>\n\n\n\n

    \n
  • B\u1ed9 ph\u1eadn n\u00e0y kh\u00f4ng \u0111\u01b0\u1ee3c nh\u00f4 ra ngo\u00e0i b\u1ea5t k\u1ef3 m\u1eb7t n\u00e0o c\u1ee7a b\u0103ng v\u1eadn chuy\u1ec3n<\/li>\n\n\n\n
  • Sau khi th\u00e1o b\u0103ng d\u00ednh b\u1ea3o v\u1ec7, linh ki\u1ec7n ph\u1ea3i c\u00f3 th\u1ec3 th\u00e1o r\u1eddi theo h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng m\u00e0 kh\u00f4ng g\u1eb7p b\u1ea5t k\u1ef3 tr\u1edf ng\u1ea1i c\u01a1 h\u1ecdc n\u00e0o<\/li>\n\n\n\n
  • G\u00f3c xoay c\u1ee7a b\u1ed9 ph\u1eadn b\u00ean trong khoang \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n \u1edf m\u1ee9c t\u1ed1i \u0111a 20\u00b0.<\/li>\n\n\n\n
  • Chuy\u1ec3n \u0111\u1ed9ng ngang c\u1ee7a b\u1ed9 ph\u1eadn n\u00e0y b\u1ecb gi\u1edbi h\u1ea1n \u1edf m\u1ee9c t\u1ed1i \u0111a 0,5 mm<\/li>\n<\/ul>\n\n\n\n

    Linh ki\u1ec7n n\u00e0y c\u0169ng ph\u1ea3i \u0111i qua m\u1ed9t kh\u00fac cua c\u00f3 b\u00e1n k\u00ednh 30 mm m\u00e0 kh\u00f4ng b\u1ecb h\u01b0 h\u1ecfng, v\u00e0 b\u0103ng ph\u1ea3i \u0111\u01b0\u1ee3c th\u00e1o ra kh\u1ecfi tr\u1ee5c cu\u1ed9n m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng b\u0103ng mang ho\u1eb7c c\u00e1c linh ki\u1ec7n c\u00f2n l\u1ea1i.<\/p>\n\n\n\n

    \u0110\u1ed9 ph\u1eb3ng c\u1ee7a b\u0103ng: \u0110\u1ed9 cong l\u1ed3i v\u00e0 \u0111\u1ed9 cong l\u00f5m<\/h3>\n\n\n\n

    Ti\u00eau chu\u1ea9n EIA-481-D quy \u0111\u1ecbnh c\u00e1c dung sai nghi\u00eam ng\u1eb7t \u0111\u1ed1i v\u1edbi hi\u1ec7n t\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng c\u1ee7a b\u0103ng. \u0110\u1ed9 cong ngang \u2014 \u0111\u1ed9 cong theo ph\u01b0\u01a1ng ngang tr\u00ean m\u1eb7t ph\u1eb3ng ngang \u2014 \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n \u1edf m\u1ee9c t\u1ed1i \u0111a 1 mm chuy\u1ec3n \u0111\u1ed9ng ngang tr\u00ean \u0111o\u1ea1n b\u0103ng d\u00e0i 250 mm. \u0110\u1ed9 cong ngang qu\u00e1 m\u1ee9c s\u1ebd g\u00e2y ra ma s\u00e1t trong c\u00e1c thanh d\u1eabn c\u1ee7a b\u1ed9 n\u1ea1p v\u00e0 l\u00e0m l\u1ec7ch v\u1ecb tr\u00ed c\u00e1c l\u1ed7 d\u1eabn \u0111\u1ed9ng.<\/p>\n\n\n\n

    \u201cBow\u201d d\u00f9ng \u0111\u1ec3 ch\u1ec9 \u0111\u1ed9 cong trong m\u1eb7t ph\u1eb3ng th\u1eb3ng \u0111\u1ee9ng. M\u1eb7c d\u00f9 \u201ccamber\u201d th\u01b0\u1eddng \u0111\u01b0\u1ee3c nh\u1eafc \u0111\u1ebfn nhi\u1ec1u h\u01a1n nh\u01b0 l\u00e0 th\u00f4ng s\u1ed1 quan tr\u1ecdng quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t c\u1ee7a b\u1ed9 n\u1ea1p, c\u1ea3 hai d\u1ea1ng bi\u1ebfn d\u1ea1ng n\u00e0y \u0111\u1ec1u c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c d\u1eabn h\u01b0\u1edbng b\u0103ng v\u00e0 \u0111\u1ed9 tin c\u1eady c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1ecbnh v\u1ecb.<\/p>\n\n\n\n

    Th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a xe \u0111\u1ea7u k\u00e9o v\u00e0 r\u01a1-mo\u00f3c<\/h3>\n\n\n\n

    Ti\u00eau chu\u1ea9n n\u00e0y quy \u0111\u1ecbnh chi\u1ec1u d\u00e0i t\u1ed1i thi\u1ec3u cho c\u00e1c \u0111o\u1ea1n \u0111\u1ea7u v\u00e0 \u0111o\u1ea1n cu\u1ed1i. Ph\u1ea3i c\u00f3 \u0111o\u1ea1n \u0111\u1ea7u d\u00e0i \u00edt nh\u1ea5t 400 mm b\u1eb1ng b\u0103ng ph\u1ee7, trong \u0111\u00f3 bao g\u1ed3m \u00edt nh\u1ea5t 100 mm b\u0103ng v\u1eadn chuy\u1ec3n c\u00f3 c\u00e1c \u00f4 tr\u1ed1ng \u0111\u01b0\u1ee3c ni\u00eam phong b\u1eb1ng b\u0103ng ph\u1ee7. Ph\u1ea7n \u0111u\u00f4i c\u0169ng ph\u1ea3i c\u00f3 chi\u1ec1u d\u00e0i \u00edt nh\u1ea5t 160 mm c\u1ee7a b\u0103ng t\u1ea3i ch\u00ednh tr\u1ed1ng \u0111\u01b0\u1ee3c b\u1ecbt k\u00edn b\u1eb1ng b\u0103ng ph\u1ee7. C\u00e1c ph\u1ea7n n\u00e0y cho ph\u00e9p n\u1ea1p v\u00e0o m\u00e1y m\u00e0 kh\u00f4ng l\u00e0m m\u1ea5t linh ki\u1ec7n.<\/p>\n\n\n\n

    Quy t\u1eafc \u0111\u1ecbnh h\u01b0\u1edbng th\u00e0nh ph\u1ea7n<\/h2>\n\n\n\n

    Ti\u00eau chu\u1ea9n EIA-481-D \u0111\u00e3 \u0111\u01b0a ra nh\u1eefng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong vi\u1ec7c chu\u1ea9n h\u00f3a h\u01b0\u1edbng c\u1ee7a ch\u00e2n 1 \u0111\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n c\u00f3 c\u1ef1c. B\u1ea3n s\u1eeda \u0111\u1ed5i n\u00e0y \u0111\u00e3 chuy\u1ec3n ch\u00e2n 1 sang c\u00e1c g\u00f3c ph\u1ea7n t\u01b0 c\u1ee5 th\u1ec3 \u0111\u1ec3 ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi c\u00e1c th\u00f4ng l\u1ec7 trong ng\u00e0nh.<\/p>\n\n\n\n

    H\u01b0\u1edbng c\u1ee7a c\u00e1c b\u1ed9 ph\u1eadn thay \u0111\u1ed5i t\u00f9y theo lo\u1ea1i:<\/p>\n\n\n\n

    Lo\u1ea1i th\u00e0nh ph\u1ea7n<\/th>Ch\u00e2n 1 - G\u00f3c ph\u1ea7n t\u01b0<\/th><\/tr><\/thead>
    BGA, SOIC, SOP, SSOP, QFNR, DIP<\/td>G\u00f3c ph\u1ea7n t\u01b0 1 (g\u00f3c d\u01b0\u1edbi b\u00ean tr\u00e1i)<\/td><\/tr>
    TO-252, TO-263, QFNS, TSSOP<\/td>G\u00f3c ph\u1ea7n t\u01b0 2 (g\u00f3c tr\u00ean b\u00ean tr\u00e1i)<\/td><\/tr>
    SOT v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn thu nh\u1ecf<\/td>G\u00f3c ph\u1ea7n t\u01b0 3 (g\u00f3c d\u01b0\u1edbi b\u00ean ph\u1ea3i)<\/td><\/tr>
    PLCC, LCC<\/td>C\u00e1c g\u00f3c ph\u1ea7n t\u01b0 1-2 (trung t\u00e2m b\u00ean tr\u00e1i)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

    Vi\u1ec7c ti\u00eau chu\u1ea9n h\u00f3a n\u00e0y \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00e1y l\u1ea5y v\u00e0 \u0111\u1eb7t s\u1ebd l\u1ea5y c\u00e1c linh ki\u1ec7n c\u00f3 c\u1ef1c \u1edf v\u1ecb tr\u00ed c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c, t\u1eeb \u0111\u00f3 gi\u1ea3m b\u1edbt \u0111\u1ed9 ph\u1ee9c t\u1ea1p trong l\u1eadp tr\u00ecnh v\u00e0 ng\u0103n ng\u1eeba c\u00e1c l\u1ed7i do c\u1ef1c ng\u01b0\u1ee3c.<\/p>\n\n\n\n

    Th\u00e1ch th\u1ee9c v\u1ec1 \u0111\u1ed9 ch\u00ednh x\u00e1c: V\u01b0\u1ee3t ra ngo\u00e0i c\u00e1c gi\u1edbi h\u1ea1n dung sai c\u01a1 b\u1ea3n<\/h2>\n\n\n\n

    Ti\u00eau chu\u1ea9n EIA-481-D cho ph\u00e9p \u0111\u1ed9 sai l\u1ec7ch k\u00edch th\u01b0\u1edbc khoang ch\u1ee9a l\u00ean \u0111\u1ebfn 100 micromet. Dung sai n\u00e0y l\u00e0 ch\u1ea5p nh\u1eadn \u0111\u01b0\u1ee3c \u0111\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n th\u1ee5 \u0111\u1ed9ng d\u1ea1ng chip v\u00e0 c\u00e1c thi\u1ebft b\u1ecb b\u00e1n d\u1eabn SMD c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n. Tuy nhi\u00ean, c\u00e1c linh ki\u1ec7n nh\u1ecf h\u01a1n \u0111\u00f2i h\u1ecfi s\u1ef1 ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd h\u01a1n \u2014 kho\u1ea3ng 50 micromet \u2014 \u0111\u1ec3 ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng xoay ho\u1eb7c nghi\u00eang qu\u00e1 m\u1ee9c b\u00ean trong khoang ch\u1ee9a.<\/p>\n\n\n\n

    C\u00e1c lo\u1ea1i v\u1ecf \u0111\u00f3ng g\u00f3i m\u1edbi nh\u1ea5t, bao g\u1ed3m WLCSP v\u00e0 c\u00e1c lo\u1ea1i BGA ti\u00ean ti\u1ebfn, \u0111\u00f2i h\u1ecfi dung sai \u1edf m\u1ee9c 30 micromet. C\u00e1c lo\u1ea1i v\u1ecf \u0111\u00f3ng g\u00f3i n\u00e0y c\u0169ng c\u00f3 th\u1ec3 y\u00eau c\u1ea7u c\u00e1c r\u00e3nh n\u00f4ng h\u01a1n 44% so v\u1edbi c\u00e1c thi\u1ebft b\u1ecb c\u00f3 k\u00edch th\u01b0\u1edbc l\u1edbn h\u01a1n. Ch\u1ec9 c\u00f3 b\u0103ng mang polycarbonate c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao m\u1edbi c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o m\u1ee9c \u0111\u1ed9 ki\u1ec3m so\u00e1t k\u00edch th\u01b0\u1edbc n\u00e0y m\u1ed9t c\u00e1ch nh\u1ea5t qu\u00e1n.<\/p>\n\n\n\n

    Kho\u1ea3ng c\u00e1ch ch\u00ednh x\u00e1c n\u00e0y gi\u1ea3i th\u00edch t\u1ea1i sao thi\u1ebft k\u1ebf thi\u1ebft b\u1ecb t\u1ea1o b\u0103ng mang l\u1ea1i l\u1ea1i quan tr\u1ecdng. Vi\u1ec7c tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n c\u01a1 b\u1ea3n EIA-481-D ch\u1ec9 l\u00e0 \u0111i\u1ec3m kh\u1edfi \u0111\u1ea7u, kh\u00f4ng ph\u1ea3i l\u00e0 \u0111\u00edch \u0111\u1ebfn. Thi\u1ebft b\u1ecb duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c P2 trong ph\u1ea1m vi \u00b10,03 mm \u0111\u1ed1i v\u1edbi b\u0103ng ch\u1ee9a linh ki\u1ec7n nh\u1ecf, v\u1edbi c\u01a1 ch\u1ebf \u0111\u1ee5c l\u1ed7 servo \u0111\u1ed9c l\u1eadp t\u00e1ch bi\u1ec7t kh\u1ecfi h\u1ec7 th\u1ed1ng v\u1eadn chuy\u1ec3n b\u0103ng, t\u1ea1o n\u1ec1n t\u1ea3ng \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c dung sai ch\u1eb7t ch\u1ebd h\u01a1n m\u00e0 c\u00e1c g\u00f3i linh ki\u1ec7n ti\u00ean ti\u1ebfn y\u00eau c\u1ea7u.<\/p>\n\n\n\n

    H\u1eadu qu\u1ea3 v\u1ec1 m\u1eb7t v\u1eadt ch\u1ea5t<\/h2>\n\n\n\n

    Ti\u00eau chu\u1ea9n EIA-481-D kh\u00f4ng quy \u0111\u1ecbnh c\u1ee5 th\u1ec3 v\u1ec1 v\u1eadt li\u1ec7u. Trong th\u1ef1c t\u1ebf, polystyrene (PS) chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c \u1ee9ng d\u1ee5ng b\u0103ng mang ti\u00eau chu\u1ea9n, trong khi polycarbonate (PC) \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n cho vi\u1ec7c \u0111\u00f3ng g\u00f3i b\u00e1n d\u1eabn ch\u00ednh x\u00e1c. B\u0103ng PS c\u00f3 th\u1ec3 c\u00f3 \u0111\u1ed9 cong t\u01b0\u01a1ng \u0111\u1ed1i cao m\u00e0 v\u1eabn \u0111\u00e1p \u1ee9ng c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a ti\u00eau chu\u1ea9n EIA-481. PC c\u00f3 \u0111\u1ed9 co ng\u00f3t th\u1ea5p h\u01a1n v\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh k\u00edch th\u01b0\u1edbc t\u1ed1t h\u01a1n, \u0111\u00e1p \u1ee9ng \u0111\u01b0\u1ee3c c\u00e1c dung sai ch\u1eb7t ch\u1ebd h\u01a1n m\u00e0 c\u00e1c g\u00f3i s\u1ea3n ph\u1ea9m ti\u00ean ti\u1ebfn y\u00eau c\u1ea7u.<\/p>\n\n\n\n

    \u0110\u1ed1i v\u1edbi c\u00e1c linh ki\u1ec7n nh\u1ea1y c\u1ea3m v\u1edbi t\u0129nh \u0111i\u1ec7n (ESD), ng\u01b0\u1eddi ta th\u01b0\u1eddng s\u1eed d\u1ee5ng c\u00e1c c\u00f4ng th\u1ee9c v\u1eadt li\u1ec7u d\u1eabn \u0111i\u1ec7n ho\u1eb7c ph\u00e2n t\u00e1n t\u0129nh \u0111i\u1ec7n. C\u00e1c y\u00eau c\u1ea7u ti\u00eau bi\u1ec3u v\u1ec1 \u0111i\u1ec7n tr\u1edf su\u1ea5t b\u1ec1 m\u1eb7t th\u01b0\u1eddng n\u1eb1m trong kho\u1ea3ng t\u1eeb 10\u2074 \u0111\u1ebfn 10\u2078 ohm tr\u00ean \u0111\u01a1n v\u1ecb di\u1ec7n t\u00edch, gi\u00fap ph\u00e2n t\u00e1n \u0111i\u1ec7n t\u00edch ma s\u00e1t trong qu\u00e1 tr\u00ecnh c\u1ea5p li\u1ec7u t\u1ed1c \u0111\u1ed9 cao m\u00e0 kh\u00f4ng l\u00e0m h\u1ecfng c\u00e1c m\u1ea1ch \u0111i\u1ec7n nh\u1ea1y c\u1ea3m.<\/p>\n\n\n\n

    Quan h\u1ec7 \u0111\u1ed1i t\u00e1c k\u1ef9 thu\u1eadt nh\u1eb1m tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n EIA-481-D<\/h2>\n\n\n\n

    Ti\u00eau chu\u1ea9n EIA-481-D quy \u0111\u1ecbnh giao di\u1ec7n c\u01a1 kh\u00ed gi\u00fap cho vi\u1ec7c l\u1eafp r\u00e1p t\u1ef1 \u0111\u1ed9ng tr\u1edf n\u00ean kh\u1ea3 thi. Vi\u1ec7c \u0111\u00e1p \u1ee9ng nh\u1ea5t qu\u00e1n c\u00e1c y\u00eau c\u1ea7u c\u1ee7a ti\u00eau chu\u1ea9n n\u00e0y \u2014 v\u00e0 v\u01b0\u1ee3t qua c\u00e1c y\u00eau c\u1ea7u \u0111\u00f3 trong nh\u1eefng tr\u01b0\u1eddng h\u1ee3p c\u00e1c g\u00f3i linh ki\u1ec7n ti\u00ean ti\u1ebfn \u0111\u00f2i h\u1ecfi dung sai ch\u1eb7t ch\u1ebd h\u01a1n \u2014 ph\u1ee5 thu\u1ed9c v\u00e0o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft b\u1ecb t\u1ea1o h\u00ecnh b\u0103ng mang.<\/p>\n\n\n\n

    C\u00f4ng ty Zhengzhou Jinyingteng (Henan Jenten) s\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111\u1ecbnh h\u00ecnh b\u0103ng v\u1eadn chuy\u1ec3n \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 tu\u00e2n th\u1ee7 ti\u00eau chu\u1ea9n EIA-481-D. H\u1ec7 th\u1ed1ng \u0111\u1ecbnh h\u00ecnh ki\u1ec3u con l\u0103n c\u1ee7a ch\u00fang t\u00f4i t\u00edch h\u1ee3p c\u00e1c c\u00f4ng ngh\u1ec7 \u0111\u1ecbnh h\u00ecnh nhi\u1ec7t, \u0111\u1ee5c l\u1ed7 b\u1eb1ng \u0111\u1ed9ng c\u01a1 servo \u0111\u1ed9c l\u1eadp v\u00e0 cu\u1ed9n d\u00e2y \u0111a l\u00e0n, gi\u00fap s\u1ea3n xu\u1ea5t b\u0103ng mang v\u1edbi v\u1ecb tr\u00ed l\u1ed7 x\u00edch, k\u00edch th\u01b0\u1edbc t\u00fai v\u00e0 \u0111\u1ed9 cong \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t \u0111\u1ed3ng nh\u1ea5t. \u0110\u1ed1i v\u1edbi c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t b\u0103ng mang d\u00f9ng trong \u0111\u00f3ng g\u00f3i b\u00e1n d\u1eabn v\u00e0 IC, thi\u1ebft b\u1ecb c\u1ee7a ch\u00fang t\u00f4i t\u1ea1o n\u1ec1n t\u1ea3ng \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 k\u00edch th\u01b0\u1edbc trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t h\u00e0ng lo\u1ea1t.<\/p>","protected":false},"excerpt":{"rendered":"

    Understanding EIA-481-D Standards for Carrier Tape EIA-481-D is the foundational specification that makes automated electronics … \u0110\u1ecdc th\u00eam<\/a><\/p>","protected":false},"author":1,"featured_media":1442,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[],"class_list":["post-1149","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-technical-guides","generate-columns","tablet-grid-50","mobile-grid-100","grid-parent","grid-33"],"_links":{"self":[{"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/posts\/1149","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/comments?post=1149"}],"version-history":[{"count":2,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/posts\/1149\/revisions"}],"predecessor-version":[{"id":1467,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/posts\/1149\/revisions\/1467"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/media\/1442"}],"wp:attachment":[{"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/media?parent=1149"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/categories?post=1149"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jinyingteng.com\/vi\/wp-json\/wp\/v2\/tags?post=1149"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}