Thaum tsim thiab tsim PCB boards, ntau txheej ntawm PCB boards feem ntau muaj kev sib txawv thiab kev siv. Yog li ntawd, yuav ua li cas txiav txim siab tus naj npawb ntawm PCB txheej thiab yuav ua li cas kom paub qhov txawv ntawm cov txheej txheem PCB yog ib qho txuj ci uas ntau tus neeg nyiam siv hluav taws xob thiab cov engineers yuav tsum paub.
Lub tswvyim ntawm PCB txheej
Tus naj npawb ntawm cov khaubncaws sab nraud povtseg hauv PCB yog hais txog cov tooj liab thiab rwb thaiv tsev txheej hauv PCB pawg thawj coj saib, tsis suav nrog txheej txheej thiab cov khoom siv impregnating. PCB boards tuaj yeem muaj cov txheej txheem sib txawv xws li ib txheej txheej, ob txheej txheej, ntau txheej, thiab lwm yam. Cov txheej txheem PCB feem ntau yog 4, 6, 8, 10, thiab lwm yam. Cov txheej txheem sib txawv tuaj yeem xaiv raws li qhov xav tau, thiab tus nqi thiab kev ua tau zoo ntawm PCB boards nrog cov txheej txheem sib txawv kuj txawv.
Yuav ua li cas txheeb xyuas cov txheej txheem ntawm PCB board
1. Nug ncaj qha nrog cov chaw tsim khoom lossis tus neeg muag khoom. Thaum xaiv ib lub rooj tsavxwm PCB, koj tuaj yeem nug ncaj qha nrog cov chaw tsim khoom lossis tus neeg muag khoom thiab nug seb puas muaj cov txheej txheem sib txawv los xaiv, thiab xaiv cov khoom tsim nyog PCB.
2. Saib xyuas cov npoo ntawm lub rooj tsavxwm PCB. Rau ib txheej PCB boards, ib sab ntawm lub rooj tsavxwm tuaj yeem pom ncaj qha; Rau ob-txheej PCB boards, ob sab ntawm lub rooj tsavxwm tuaj yeem pom, thaum ntau txheej PCB boards yuav tsum muaj lub iav loj lossis lub tshuab tsom rau saib.
3. Kev txiav txim los ntawm lub thickness ntawm lub rooj tsavxwm. Feem ntau, lub thickness ntawm ib leeg-tog tooj liab PCB yog 1.6 hli, lub thickness ntawm ob sab tooj liab PCB yog 1.2-1.6 hli, thiab lub thickness ntawm ib tug 4- txheej PCB yog 1. {{10}}.0mm. Yog hais tias lub thickness ntawm PCB board ntau tshaj 2 hli, ces lub PCB board yuav tsum muaj tsawg kawg yog 4 txheej.
Txheeb xyuas cov txheej txheem ntawm PCB pawg thawj coj saib
1. Paub qhov txawv ntawm qhov pom kev. Raws li tau hais los saum toj no, cov txheej txheem kev soj ntsuam rau PCB boards nrog cov txheej txheem sib txawv yog qhov sib txawv, thiab cov txheej txheem PCB tuaj yeem txiav txim siab los ntawm kev soj ntsuam pom.
2. Paub qhov txawv ntawm cov yam ntxwv sab nraud. Cov yam ntxwv sab nraud ntawm PCB board kuj tuaj yeem cuam tshuam nws cov txheej txheem ntau lawm. Yog hais tias muaj cov lej xws li 2, 4, 6, 8 thiab lo lus "txheej" ntawm lub rooj tsavxwm, nws sawv cev rau ntau txheej txheej; Ntawm qhov tsis sib xws, yog tias qhov chaw tsis muaj cov yam ntxwv saum toj no, nws zoo li yuav yog ib txheej board.
3. Paub qhov txawv los ntawm kev tswj qhov loj ntawm lub rooj tsavxwm. Multilayer boards feem ntau xav tau hluav taws xob tsim automation (EDA) ua. Hauv EDA software, cov txheej txheem sib txawv tuaj yeem teeb tsa thiab PCB boards nrog cov txheej txheem sib txawv tuaj yeem ua rau ntau qhov sib txawv. Yog li ntawd, kev txiav txim siab tus naj npawb ntawm cov khaubncaws sab nraud povtseg raws li qhov loj ntawm PCB pawg thawj coj saib kuj yog ib txoj hauv kev rau kev txheeb xyuas.
4, Kev ceev faj
Thaum xaiv thiab txheeb xyuas tus naj npawb ntawm cov khaubncaws sab nraud povtseg ntawm PCB pawg thawj coj saib, yuav tsum tau them nyiaj rau cov txheej txheem rwb thaiv tsev thiab kev sib txuas ntawm cov txheej tooj liab sib txawv kom ntseeg tau tias kev ua tau zoo thiab kev ua haujlwm zoo ntawm lub rooj tsavxwm.
Thaum soj ntsuam PCB boards, nws yog ib qho tseem ceeb kom tsis txhob ua rau lub rooj tsav xwm Circuit Court puas, tshwj xeeb tshaj yog rau cov me me multilayer boards, uas yuav tsum tau siv lub tshuab microscope los yog magnifying iav rau kev soj ntsuam.
Hauv kev siv cov tswv yim, cov txheej txheem sib txawv ntawm PCB boards yuav tsum tau them sai sai rau lawv cov xwm txheej thiab cov yam ntxwv, thiab xaiv thiab siv cov PCB sib txawv kom ua tiav cov qauv tsim thiab kev ua haujlwm zoo.