PCB paub, koj paub ntau npaum li cas

Nws muaj kev ntseeg siab, siab ceev, tsim, sib dhos kuaj thiab kev tswj xyuas. Nws yog ib qho tseem ceeb ntawm cov khoom siv hluav taws xob hauv kev lag luam thiab yuav tsum muaj rau yuav luag txhua yam khoom siv hluav taws xob. Nws yog dav siv hauv cov neeg siv khoom, kev sib txuas lus, tsheb, kev tswj hwm kev lag luam, kev kho mob, aerospace, tub rog thiab lwm yam khoom siv. PCB board plays lub luag haujlwm tseem ceeb thiab tseem ceeb.

1. Puas yog PCB boards nrhiav tau thiab siv dav?

Ntawm no peb yuav tsum hais txog Paul Eisler, tus tsim ntawm PCB.

Xyoo 1936, nws thawj zaug siv cov ntawv luam tawm hauv xov tooj cua. Xyoo 1943, cov neeg Amelikas feem ntau siv cov thev naus laus zis no hauv xov tooj cua tub rog, thiab xyoo 1948, Tebchaws Asmeskas tau lees paub qhov kev tsim kho no rau kev siv lag luam. Cov boards luam tawm tsuas yog siv dav txij li nruab nrab -1950s.

2. Cov xim sib txawv ntawm PCB

Cov xim PCB feem ntau yog xim liab, daj, ntsuab, xiav, thiab dub, tab sis ntsuab yog siv ntau tshaj.

Txij li thaum txog nruab nrab thiab lub xyoo pua xeem dhau los, kev lag luam tau pib them nyiaj rau cov xim ntawm PCB boards; ntau lub tuam txhab high-end hom thawj-tier manufacturers kuj tau txais ntsuab PCB board xim tsim, yog li cov neeg maj mam xav tias cov xim ntawm PCB yog ntsuab. yog siab kawg.

Qhov thib ob, cov neeg ua haujlwm tsim khoom thiab kev saib xyuas yuav tsum tau saib xyuas cov khoom ntawm PCB lub rooj tsavxwm ntev ntev thaum lawv ua haujlwm. Piv nrog rau lwm cov xim, ntsuab yog qhov zoo dua rau qhov muag.

Tom qab lub rooj tsavxwm ntsuab PCB yog welded los ntawm SMT, thaum nws raug kuaj thiab kuaj xyuas los ntawm AOI, qhov chaw ntawm cov cuab yeej kho qhov muag yuav ua kom raug thiab txheeb xyuas zoo dua; thiab cov nqi tsim khoom ntawm ntsuab PCB board yuav qis dua.

Lub hauv paus ntsiab lus ntawm xiav thiab dub yog tias lawv tau doped nrog cobalt thiab carbon teeb ntsiab, feem, thiab muaj qee yam hluav taws xob conductivity. Nyob rau hauv cov ntaub ntawv ntawm lub hwj chim-on, short-circuit teeb meem yuav tshwm sim, thiab ntsuab PCBs yog ib puag ncig tus phooj ywg. Nyob rau hauv qhov kub thiab txias ib puag ncig Thaum siv, feem ntau tsis muaj cov pa phem tso tawm.

Kuj tseem muaj qee tus neeg tsim khoom lag luam hauv khw uas siv PCB boards dub. Ntawm ib sab, nws zoo li high-end. Ntawm qhov tod tes, nws tsis yooj yim pom cov xaim ntawm lub rooj tsavxwm dub, uas ua rau muaj qee yam nyuaj rau kev luam lub rooj tsavxwm.

3. PCB board tsim

Txhawm rau tsim lub PCB, qhov tsim qauv ntawm PCB yuav tsum ua ntej.

Cov txheej txheem yooj yim ntawm PCB tsim yog: kev npaj ua ntej → PCB qauv tsim → PCB layout tsim → PCB txwv kev teeb tsa thiab thaiv kev tsim → thaiv kev ua kom zoo thiab kev tshuaj ntsuam silk screen → network DRC tshuaj xyuas thiab qauv tshuaj xyuas → PCB pawg thawj coj ua.

Nrog rau kev ua haujlwm tsis tu ncua, kev txiav txim siab thiab kev kub ceev ntawm cov khoom siv hluav taws xob, PCB tsim tsis tsuas yog yuav tsum ua kom tiav cov kev sib txuas ntawm ntau yam khoom, tab sis kuj txiav txim siab ntau yam kev sib tw los ntawm kev kub ceev thiab ceev ceev.

4. PCB Screen Printing

Kev tshuaj ntsuam luam ntawv yog txheej txheej ntawm tus cwj mem (feem ntau yog xim dawb) los cim txoj haujlwm, cov cim, thiab lwm yam ntawm ntau yam ntawm PCB ntawm lub rooj tsavxwm. Lub vijtsam luam tawm sab tseem hu ua icon sab; nws feem ntau yog siv los ua ib feem ntawm PCB tsim.

5. Puas muaj cov xaim ntawm PCB?

Qhov tseeb, PCBs txuas nrog yam tsis muaj xov hlau.

Feem ntau cov khoom siv hluav taws xob thiab thev naus laus zis xav tau cov xov hlau txuas nrog, tsis muaj cov xov hlau hauv PCB, tab sis cov kab tooj liab siv los nqa tam sim no thoob plaws hauv lub cuab yeej thiab txuas txhua yam khoom.