Lub substrate ntawm PCB nws tus kheej yog ua los ntawm cov khoom siv uas muaj rwb thaiv tsev thiab tiv taus khoov. Cov khoom siv me me uas tuaj yeem pom ntawm saum npoo yog tooj liab ntawv ci. Thaum xub thawj, cov ntawv tooj liab tau npog rau tag nrho PCB pawg thawj coj, tab sis qhov nruab nrab tau muab tshem tawm hauv cov txheej txheem tsim khoom, thiab seem uas seem dhau los ua kev sib txuas ntawm cov khoom me me.

Yuav ua cas thiaj a PCB pawg thawj coj saib

Cov kab no hu ua tus tuav lossis thaiv thiab tau siv los muab hluav taws xob sib txuas ntawm ib feem ntawm PCB. Feem ntau cov xim ntawm PCB pawg thawj coj yog ntsuab lossis xim av, uas yog xim ntawm cov xim ua kom tsis haum. Ib txheej tiv thaiv ntawm rwb thaiv tsev uas tiv thaiv cov hlau tooj liab thiab tiv thaiv cov khoom los ntawm welded mus rau qhov tsis raug.

Kev tsim PCB pib nrog “txheej txheej” ua los ntawm iav Epoxy lossis cov khoom zoo sib xws. Thawj kauj ruam yog txhawm rau teeb tsa cov kab hluav taws xob nruab nrab ntawm cov khoom los ntawm “luam ntawv” kab tsis zoo ntawm cov tsim PCB pawg thawj coj mus rau tus neeg hlau hlau los ntawm kev hloov pauv.

Qhov ua kom yuam kev yog txhawm rau kis ib txheej nyias nyias ntawm cov ntawv ci tooj liab hla tag nrho saum npoo thiab tshem tawm ib qho twg dhau. Yog tias koj tab tom ua ob lub vaj huam sib luag PCB, cov ntawv tooj liab yuav npog ob sab ntawm lub hauv paus. Thiab xav ua ntau lub rooj tsavxwm kom muaj peev xwm ua ob lub ntsej muag ob lub ntsej muag nrog tailormade nplaum “nias ze” nce mus.

Tom ntej no, qhov kev khawb thiab plating xav tau los ntsaws rau hauv cov khoom tuaj yeem ua tiav ntawm PCB pawg thawj coj. Tom qab raug tshuab los ntawm lub tshuab raws li xav tau, lub qhov yuav tsum tau Plated sab hauv (Plated dhau-qhov Technology, PTH). Tom qab ua cov hlau kho hauv lub qhov, kab sab hauv ntawm txhua txheej tuaj yeem txuas nrog ib leeg.

Lub qhov yuav tsum tau tshem ntawm cov khib nyiab ua ntej plating tuaj yeem pib. Qhov no yog vim tias cov tshuaj epoxy yuav tsim qee cov tshuaj hloov pauv tom qab cua sov, thiab nws yuav npog sab hauv PCB txheej, yog li nws yuav tsum raug tshem tawm ua ntej. Kev tu thiab plating yog ua tiav hauv cov txheej txheem tshuaj. Tom ntej no, koj yuav tsum npog cov txheej sab nrauv nrog cov xim pleev xim (cov kua nplaum) kom xaim tsis kov lub plating ib feem.

Cov ntawv tivthaiv ntau yam tomqab ntawd luam tawm ntawm lub rooj tsavxwm kom qhia qhov chaw nyob ntawm txhua feem. Nws yuav tsum tsis txhob npog rau ntawm cov xov lossis cov ntiv tes kub, txwv tsis pub nws yuav txo qhov muag lossis kev ruaj ntseg ntawm qhov txuas tam sim no. Ib qho ntxiv, yog tias muaj cov hlau txuas, ntu “ntiv tes” feem ntau yog plated nrog kub kom ntseeg tau tias muaj kev sib txuas zoo tam sim no thaum tso rau hauv qhov nthuav dav.

Thaum kawg, muaj qhov kev sim. Txhawm rau ntsuas PCB rau luv Circuit Court lossis qhib Circuit Court, kev siv kho qhov muag lossis hluav taws xob tuaj yeem siv. Kev ntsuas qhov muag siv ntsuas kom pom qhov tsis xws hauv txheej, thaum ntsuas hluav taws xob feem ntau siv lub flyprobe los tshuaj xyuas txhua qhov kev sib txuas. Kev ntsuas hluav taws xob yog qhov tseeb ntawm kev tshawb pom cov kab hluav taws xob luv lossis tawg, tab sis kev ntsuas kho qhov muag tuaj yeem yooj yim dua txheeb xyuas teeb meem nrog qhov khoob tsis raug ntawm cov neeg ua haujlwm.