Yuav ua li cas yog lub Circuit Court board ntawm lub Hoobkas PCB?Cov khoom siv hluav taws xob me me uas tuaj yeem pom ntawm qhov chaw yog tooj liab ntawv ci.Keeb kwm, cov ntawv ci tooj liab tau them rau tag nrho PCB, tab sis ib feem ntawm nws tau etched thaum lub sij hawm tsim khoom, thiab cov seem seem tau los ua ib qho mesh zoo li me me..

 

Cov kab no hu ua cov xov hlau lossis cov kab thiab siv los muab kev sib txuas hluav taws xob rau cov khoom hauv PCB.Feem ntau cov xim ntawm cov PCB pawg thawj coj saib yog ntsuab lossis xim av, uas yog xim ntawm daim npog ntsej muag.Nws yog ib txheej insulating tiv thaiv uas tiv thaiv cov tooj liab hlau thiab tseem tiv thaiv qhov chaw los ntawm soldered mus rau qhov chaw tsis raug.



Multilayer Circuit Boards yog tam sim no siv rau ntawm motherboards thiab graphics phaib, uas zoo heev tsub kom lub cheeb tsam uas yuav wired.Multilayer boards siv ntau dua ib leeg los yog ob-sided thaiv kab hlau rhuav , thiab muab ib txheej insulating ntawm txhua lub rooj tsavxwm thiab nias lawv ua ke.Tus naj npawb ntawm cov khaubncaws sab nraud povtseg ntawm PCB lub rooj tsavxwm txhais tau hais tias muaj ntau txheej txheej txheej txheej txheej, feem ntau cov txheej txheem yog txawm, thiab suav nrog ob txheej txheej sab nraud.Common PCB boards feem ntau yog 4 mus rau 8 txheej ntawm cov qauv.Tus naj npawb ntawm cov khaubncaws sab nraud povtseg ntawm ntau lub rooj tsavxwm PCB tuaj yeem pom los ntawm kev saib cov ntu ntawm PCB pawg thawj coj saib.Tab sis qhov tseeb, tsis muaj leej twg muaj qhov muag zoo li no.Yog li, ntawm no yog lwm txoj hauv kev los qhia koj.

 

Kev sib txuas ntawm Circuit Court ntawm ntau txheej boards yog los ntawm faus ntawm thiab qhov muag tsis pom ntawm kev siv tshuab.Feem ntau cov motherboards thiab cov ntawv qhia zaub mov siv 4-txheej PCB boards, thiab qee qhov siv 6-, 8-txheej, lossis 10-txheej PCB boards.Yog tias koj xav pom muaj pes tsawg txheej hauv PCB, koj tuaj yeem txheeb xyuas nws los ntawm kev soj ntsuam cov lus qhia qhov, vim tias 4-txheej boards siv rau ntawm lub rooj tsavxwm loj thiab daim npav tso saib yog thawj thiab plaub txheej ntawm cov xaim, thiab lwm cov khaubncaws sab nraud povtseg yog siv rau lwm lub hom phiaj (hauv av hlau).thiab lub zog).

 

Yog li ntawd, zoo li lub rooj tsavxwm ob txheej, lub qhov qhia yuav nkag mus rau PCB pawg thawj coj saib.Yog tias qee qhov vias tshwm nyob rau sab pem hauv ntej ntawm PCB tab sis tsis tuaj yeem pom ntawm sab nraub qaum, ces nws yuav tsum yog 6/8-txheej board.Yog tias tib txoj kev qhia qhov tuaj yeem pom ntawm ob sab ntawm PCB pawg thawj coj saib, nws yog 4-txheej board.



Cov txheej txheem tsim PCB pib nrog PCB "substrate" ua los ntawm iav Epoxy lossis zoo sib xws.Thawj kauj ruam ntawm kev tsim khoom yog kos cov xaim ntawm cov khoom.Cov txheej txheem yog "luam tawm" qhov tsis zoo ntawm lub rooj tsav xwm PCB tsim rau ntawm tus neeg xyuas pib hlau los ntawm kev hloov pauv hloov.



Qhov ua kom yuam kev yog kis ib txheej nyias ntawm cov ntawv ci tooj liab hla tag nrho saum npoo thiab tshem tawm qhov dhau.Yog hais tias qhov ntau lawm yog ob sab, ces ob sab ntawm PCB substrate yuav tsum tau them nrog tooj liab ntawv ci.Txhawm rau ua ib lub rooj tsavxwm ntau txheej, ob lub rooj zaum ob sab tuaj yeem "nias" ua ke nrog cov nplaum tshwj xeeb.

 

Tom ntej no, qhov drilling thiab electroplating xav tau los txuas cov khoom tuaj yeem ua rau ntawm PCB pawg thawj coj saib.Tom qab drilling los ntawm cov cuab yeej siv tshuab raws li qhov yuav tsum tau ua hauv qhov drilling, sab hauv ntawm lub qhov phab ntsa yuav tsum tau plated (Plated-Through-Hole technology, PTH).Tom qab kev kho cov hlau yog ua nyob rau hauv lub qhov phab ntsa, cov txheej txheem sab hauv tuaj yeem txuas rau ib leeg.

 

Ua ntej pib electroplating, cov khib nyiab hauv lub qhov yuav tsum tau ntxuav.Qhov no yog vim hais tias cov resin epoxy yuav dhau qee cov tshuaj hloov pauv thaum cua sov, thiab nws yuav npog cov txheej hauv PCB, yog li nws yuav tsum tau muab tshem tawm ua ntej.Ob qho kev ntxuav thiab plating yog ua tiav hauv cov txheej txheem tshuaj.Tom ntej no, nws yog ib qho tsim nyog yuav tsum tau coated lub solder resist xim (solder resist ink) nyob rau sab nraud txuas kom cov hlau tsis kov cov plated.

 

Tom qab ntawd, ntau yam khoom siv yog tshuaj ntsuam-luam tawm ntawm lub rooj tsav xwm Circuit Court los qhia qhov chaw ntawm txhua qhov chaw.Nws tsis tuaj yeem npog cov xov hlau lossis cov ntiv tes kub, txwv tsis pub nws tuaj yeem txo cov solderability lossis kev ruaj ntseg ntawm kev sib txuas tam sim no.Tsis tas li ntawd, yog tias muaj kev sib txuas ntawm cov hlau, "cov ntiv tes kub" feem ntau yog plated nrog kub nyob rau lub sijhawm no kom ntseeg tau tias muaj hluav taws xob zoo sib txuas thaum muab tso rau hauv qhov nthuav dav.

 

Thaum kawg, muaj qhov kev xeem.Kuaj PCB rau luv luv lossis qhib circuits, optically lossis electronically.Txoj kev kho qhov muag siv kev tshuaj ntsuam xyuas kom pom qhov tsis xws luag hauv txhua txheej, thiab kev ntsuas hluav taws xob feem ntau siv Flying-Probe los xyuas txhua qhov kev sib txuas.Kev ntsuam xyuas hluav taws xob yog qhov tseeb dua ntawm kev nrhiav cov luv lossis qhib, tab sis kev kuaj pom pom tau yooj yim dua pom cov teeb meem nrog qhov tsis raug ntawm cov neeg xyuas pib.



Tom qab lub Circuit Court board substrate tiav lawm, ib tug tiav lawm motherboard yog nruab nrog ntau yam ntawm ntau qhov ntau thiab tsawg ntawm PCB substrate raws li kev xav tau - thawj zaug siv lub SMT tsis siv neeg tso tshuab rau "solder lub IC nti thiab thaj chaw", thiab ces manually. txuas.Plug rau hauv qee qhov haujlwm uas tsis tuaj yeem ua los ntawm lub tshuab, thiab ruaj khov kho cov plug-in Cheebtsam ntawm PCB los ntawm cov txheej txheem nthwv dej / reflow soldering, yog li tsim cov motherboard.