Vim li cas Copper Foil siv hauv PCB Manufacturing?

Printed circuit boards yog qhov tsim nyog ntawm cov khoom siv hluav taws xob feem ntau. Niaj hnub no PCBs muaj ob peb txheej rau lawv: lub substrate, kab, solder mask, thiab silkscreen. Ib qho ntawm cov ntaub ntawv tseem ceeb tshaj plaws ntawm PCB yog tooj liab, thiab muaj ntau qhov laj thawj vim li cas tooj liab siv los ntawm lwm cov hlau xws li txhuas lossis tin.

PCBs yog dab tsi?

Hais los ntawm lub tuam txhab PCB los ua ke, PCBs yog tsim los ntawm cov khoom hu ua substrate, uas yog ua los ntawm fiberglass uas tau ntxiv dag zog nrog epoxy resin. Sab saum toj ntawm lub substrate yog ib txheej ntawm cov ntawv ci tooj liab uas tuaj yeem txuas rau ob sab lossis tsuas yog ib qho. Thaum lub substrate yog tsim, manufacturers muab cov khoom rau nws. Lawv siv lub npog ntsej muag thiab silkscreen nrog rau cov resistors, capacitors, transistors, diodes, circuit chips, thiab lwm yam khoom tshwj xeeb.

Vim li cas Copper Foil siv hauv PCBs?

PCB manufacturers siv tooj liab vim nws muaj superior hluav taws xob thiab thermal conductivity. Raws li cov hluav taws xob tam sim no txav nrog rau PCB, cov tooj liab ua kom cov cua sov tsis ua kom puas thiab ua rau muaj kev ntxhov siab ntxiv ntawm PCB. Nrog rau lwm cov alloys - zoo li txhuas lossis tin - PCB tuaj yeem ua kom sov tsis sib xws thiab tsis ua haujlwm zoo.

Tooj liab yog cov hlau uas nyiam tshaj plaws vim tias nws tuaj yeem xa cov teeb liab hluav taws xob hla lub rooj tsavxwm yam tsis muaj teeb meem poob lossis ua rau hluav taws xob qeeb. Qhov ua tau zoo ntawm kev hloov hluav taws xob tso cai rau cov tuam txhab tsim cov khoom siv hluav taws xob classic rau ntawm qhov chaw. Tooj nws tus kheej yog qhov ua tau zoo, raws li ib qho ounce ntawm tooj liab tuaj yeem npog ib square feet ntawm PCB substrate ntawm 1.4 txhiab ntawm ib nti lossis 35 micrometers tuab.

Tooj liab yog cov khoom siv hluav taws xob zoo heev vim nws muaj cov hluav taws xob dawb uas tuaj yeem taug kev ntawm ib lub atom mus rau lwm qhov yam tsis muaj qeeb. Vim tias nws tseem muaj txiaj ntsig zoo ntawm qhov tsis txaus ntseeg nyias li nws ua ntawm qib tuab, me ntsis tooj liab mus ntev.

Tooj liab thiab lwm yam hlau muaj nuj nqis siv hauv PCBs
Cov neeg feem coob paub txog PCBs yog ntsuab. Tab sis, lawv feem ntau muaj peb xim ntawm txheej txheej: kub, nyiaj, thiab liab. Lawv kuj muaj cov tooj liab ntshiab hauv thiab sab nraud ntawm PCB. Lwm cov hlau ntawm lub rooj tsav xwm Circuit Court tshwm sim nyob rau hauv ntau yam xim. Cov txheej kub yog qhov kim tshaj plaws, cov nyiaj txheej muaj tus nqi thib ob-siab tshaj plaws, thiab cov xim liab yog cov txheej txheem kim tshaj plaws.

Siv Immersion Kub hauv PCBs
tooj liab rau ntawm lub rooj tsav xwm luam tawm

Cov txheej kub-plated yog siv rau kev sib txuas shrapnel thiab cov ntaub qhwv. Cov txheej kub immersion muaj nyob los tiv thaiv kev txav ntawm cov atoms nto. Cov txheej tsis yog kub hauv cov xim, tab sis nws yog ua los ntawm cov kub tiag tiag. Cov kub yog incredibly nyias tab sis yog txaus kom ntev lub neej ntawm cov khoom uas yuav tsum tau soldered. Cov kub tiv thaiv cov khoom siv los ntawm corroding lub sijhawm.

Siv Immersion Silver hauv PCBs
Silver yog lwm cov hlau siv hauv kev tsim PCB. Nws yog nqi tsawg dua li kub immersion. Silver immersion tuaj yeem siv rau hauv qhov chaw kub immersion vim nws kuj pab nrog kev sib txuas, thiab nws txo cov nqi tag nrho ntawm lub rooj tsavxwm. Silver immersion feem ntau yog siv rau hauv PCBs uas yog siv rau hauv tsheb thiab computer peripherals.

Copper Clad Laminate hauv PCBs
Es tsis txhob siv lub immersion, tooj liab yog siv nyob rau hauv daim ntawv clad. Qhov no yog txheej xim liab ntawm PCB, thiab nws yog cov hlau uas siv ntau tshaj plaws. PCB yog tsim los ntawm tooj liab raws li lub hauv paus hlau, thiab nws yog ib qho tsim nyog kom tau txais cov circuits los txuas thiab hais lus zoo.

Copper Foil siv li cas hauv PCBs?

Tooj liab muaj ntau yam siv hauv PCBs, los ntawm tooj liab-clad laminate rau cov kab. Tooj liab yog qhov tseem ceeb rau PCBs ua haujlwm kom tsim nyog.

PCB Trace yog dab tsi?
Ib txoj kab PCB yog qhov nws suab zoo li, txoj hauv kev rau lub voj voog ua raws. Cov kab muaj xws li kev sib txuas ntawm tooj liab, thaiv, thiab rwb thaiv tsev, nrog rau cov fuses thiab cov khoom siv uas siv rau ntawm lub rooj tsavxwm.

Txoj kev yooj yim tshaj plaws kom nkag siab txog ib txoj kab yog xav tias nws yog txoj kev lossis choj. Yuav kom haum rau lub tsheb, cov kab yuav tsum tau dav txaus kom tuav tsawg kawg yog ob ntawm lawv. Nws yuav tsum tau tuab txaus kom tsis txhob tawg nyob rau hauv siab. Lawv kuj yuav tsum tau ua los ntawm cov ntaub ntawv uas yuav tiv taus qhov hnyav ntawm cov tsheb uas taug kev ntawm nws. Tab sis, cov kab ke ua txhua yam no mus rau qib me me kom txav hluav taws xob ntau dua li tsheb.

Cheebtsam ntawm PCB Trace
Muaj ob peb yam khoom uas ua rau PCB kab. Lawv muaj ntau yam haujlwm uas yuav tsum tau ua rau pawg thawj coj ua nws txoj haujlwm txaus. Cov tooj liab yuav tsum tau siv los pab cov kab ke ua lawv txoj haujlwm, thiab tsis muaj PCB, peb yuav tsis muaj cov khoom siv hluav taws xob. Xav txog lub ntiaj teb uas tsis muaj smartphones, laptops, kas fes txiag, thiab tsheb. Qhov ntawd yog qhov peb yuav muaj yog tias PCBs tsis siv tooj liab.

PCB Trace Thickness
Lub PCB tsim nyob ntawm lub thickness ntawm lub rooj tsavxwm. Lub thickness yuav cuam tshuam qhov sib npaug thiab yuav ua rau cov khoom sib txuas.

PCB Trace Dav
Qhov dav ntawm txoj kab kuj tseem ceeb. Qhov no tsis cuam tshuam rau qhov sib npaug lossis qhov txuas ntawm cov khoom sib txuas, tab sis nws ua kom cov kev hloov pauv tam sim no tsis muaj cua sov los yog ua rau lub rooj tsavxwm puas.

PCB Trace Tam sim no
Lub PCB taug qab tam sim no yog qhov tsim nyog vim tias qhov no yog lub rooj tsav xwm siv los txav hluav taws xob los ntawm cov khoom thiab cov xov hlau. Tooj liab pab qhov no tshwm sim, thiab cov hluav taws xob dawb ntawm txhua lub atom tau txais qhov tam sim no txav mus los ntawm lub rooj tsavxwm.

Vim li cas Copper Foil ntawm pcbs

Txheej Txheem Ua PCBs
Cov txheej txheem ntawm kev ua PCB yog tib yam. Qee lub tuam txhab ua nws sai dua lwm tus, tab sis lawv txhua tus siv cov txheej txheem tib yam thiab cov ntaub ntawv. Cov no yog cov kauj ruam:

Ua lub hauv paus ntawm fiberglass thiab resins
Muab cov txheej tooj liab tso rau ntawm lub hauv paus
Txheeb xyuas thiab teeb tsa cov qauv tooj liab
Ntxuav lub rooj zaum hauv da dej
Ntxiv lub npog ntsej muag los tiv thaiv PCB
Txuas lub silkscreen ntawm PCB
Qhov chaw thiab solder cov resistors, integrated circuits, capacitors, thiab lwm yam khoom
Kuaj PCB

PCBs yuav tsum muaj cov khoom tshwj xeeb kom ua haujlwm tau zoo. Ib qho tseem ceeb tshaj plaws ntawm PCB yog tooj liab. Qhov no alloy yog xav tau los ua hluav taws xob ntawm cov khoom siv uas PCBs yuav muab tso rau. Yog tsis muaj tooj liab, cov khoom siv yuav tsis ua haujlwm vim tias hluav taws xob yuav tsis muaj cov hlau nplaum txav mus los.