PCB Multilayer Board Tsim

1 Kev txiav txim siab ntawm cov duab, qhov loj me thiab cov txheej txheem ntawm lub rooj tsavxwm

Txhua daim ntawv luam tawm muaj qhov teeb meem ntawm kev sib koom tes nrog lwm yam khoom siv. Yog li ntawd, cov duab thiab qhov loj ntawm cov ntawv luam tawm yuav tsum tau ua raws li tag nrho cov qauv ntawm cov khoom 5. Txawm li cas los xij, los ntawm kev xav ntawm cov tshuab tsim khoom, nws yuav tsum yooj yim li sai tau, feem ntau yog ib daim duab plaub uas muaj qhov sib txawv tsawg dua, yog li. ua kom yooj yim sib dhos, txhim kho kev tsim khoom thiab txo cov nqi zog.

Nyob rau hauv cov nqe lus ntawm tus naj npawb ntawm cov khaubncaws sab nraud povtseg, nws yuav tsum tau txiav txim raws li qhov yuav tsum tau ntawm Circuit Court kev ua tau zoo, board loj thiab Circuit Court ceev. Rau ntau- txheej luam ntawv boards, plaub- txheej boards thiab rau - txheej boards yog siv dav tshaj plaws. Siv plaub- txheej boards ua piv txwv, muaj ob txheej txheej txheej txheej (cov khoom siv saum npoo thiab vuam nto), txheej txheej fais fab thiab txheej hauv av.

Cov khaubncaws sab nraud povtseg ntawm ntau- txheej board yuav tsum tau khaws cia symmetrical, thiab zoo dua txawm tias - tooj liab txheej, uas yog, plaub, rau, yim, thiab lwm yam. Vim yog asymmetric lamination, board nto yog nquag mus rau warpage, tshwj xeeb tshaj yog rau nto mount multilayer boards, uas yuav tsum tau them sai sai rau. 6

2 Qhov chaw thiab qhov chaw ntawm cov khoom

Txoj hauj lwm thiab kev tso kawm ntawm cov Cheebtsam 5 yuav tsum xub txiav txim siab los ntawm qhov kev xav ntawm lub hauv paus ntsiab lus ntawm Circuit Court thiab ua raws li qhov sib txawv ntawm Circuit Court. Txawm hais tias qhov kev tso kawm yog tsim nyog lossis tsis yuav cuam tshuam ncaj qha rau kev ua haujlwm ntawm cov ntawv luam tawm, tshwj xeeb tshaj yog rau siab - zaus analog circuits, uas yuav tsum nruj dua ntawm qhov chaw thiab qhov chaw ntawm cov khoom. Tsim nyog qhov chaw ntawm cov khoom, nyob rau hauv ib qho kev nkag siab, tau tshaj tawm txoj kev vam meej ntawm cov ntawv luam tawm tsim. Yog li ntawd, thaum pib npaj cov txheej txheem ntawm cov ntawv luam tawm thiab txiav txim siab tag nrho cov txheej txheem, lub hauv paus ntsiab lus ntawm Circuit Court yuav tsum tau txheeb xyuas kom meej, thiab qhov chaw ntawm cov khoom tshwj xeeb (xws li loj - nplai ICs, siab {{3} . }power transistors, teeb liab qhov chaw, thiab lwm yam) yuav tsum tau txiav txim siab ua ntej, thiab tom qab ntawd Npaj lwm cov khoom kom tsis txhob muaj qhov cuam tshuam.

Ntawm qhov tod tes, tag nrho cov qauv ntawm cov ntawv luam tawm yuav tsum raug txiav txim siab kom tsis txhob muaj qhov sib npaug ntawm cov khoom thiab kev tsis sib haum xeeb. Qhov no tsis tsuas yog cuam tshuam rau cov tsos ntawm cov ntawv luam tawm, tab sis kuj ua rau muaj kev cuam tshuam ntau rau kev sib dhos thiab kev ua haujlwm. 6

3 Qhov yuav tsum tau muaj rau tus neeg xyuas pib layout thiab thaiv qhov chaw

Feem ntau, kev xaim ntawm ntau- txheej cov ntawv luam tawm yog ua raws li kev ua haujlwm hauv Circuit Court. Thaum xaim txheej txheej sab nrauv, nws yuav tsum muaj cov xaim ntau dua ntawm qhov chaw vuam thiab tsis tshua muaj kev sib txuas ntawm cov khoom siv saum npoo, uas yog qhov tsim nyog rau kev saib xyuas thiab kev daws teeb meem ntawm cov ntawv luam tawm. Nyias, ntom cov xov hlau thiab cov kab teeb liab uas muaj kev cuam tshuam rau kev cuam tshuam feem ntau yog teem rau ntawm txheej sab hauv. Ib cheeb tsam loj ntawm cov ntawv ci tooj liab yuav tsum tau muab faib sib npaug ntawm cov txheej sab hauv thiab sab nrauv, uas yuav pab txo qhov warpage ntawm lub rooj tsavxwm thiab tseem ua kom muaj txheej txheej ntau dua rau ntawm qhov chaw thaum electroplating. Txhawm rau tiv thaiv kev puas tsuaj rau cov xov hlau luam tawm thiab luv luv ntawm cov khaubncaws sab nraud povtseg thaum lub sijhawm machining, qhov kev ncua deb ntawm cov qauv siv nyob rau hauv cov khoom siv hluav taws xob sab hauv thiab sab nraud thiab cov ntug ntawm lub rooj tsavxwm yuav tsum ntau dua 50 mils.