Circuit board kub ntiv testhev naus laus zis yog cov txheej txheem ua haujlwm uas siv cov hlau ntawm cov npoo ntawm pcb los muab kev sib txuas, kev ua haujlwm, thiab kev tiv thaiv kev ua haujlwm. Cov txheej txheem no ua lub luag haujlwm tseem ceeb hauv cov khoom siv hluav taws xob niaj hnub, tshwj xeeb tshaj yog nyob rau hauv lub qhov (socket) lossis cov khoom sib txuas.
1, Kev tsim cov txheej txheem ntawm cov ntiv tes golden
Kev npaj substrate: Nyob rau hauv cov txheej txheem tsim khoom pcb, nws yog ib qho tsim nyog yuav tsum tau tawm qhov chaw rau cov ntiv tes kub hauv thaj tsam ntawm lub rooj tsavxwm, feem ntau ua tiav los ntawm kev tswj etching lossis txiav txoj kev. Xaiv cov ntaub ntawv tsim nyog substrate, xws li FR-4 epoxy iav fiber ntau pawg thawj coj saib, txiav raws li cov qauv tsim los tsim cov qauv hauv Circuit Board.
Kev kho deg: Tom ntej no, tshuaj pretreatment yog siv rau thaj tsam kub ntiv tes kom ntseeg tau zoo adhesion ntawm cov hlau tom qab deposition. Ua ntej kho lub qhov phab ntsa thiab substrate nto nrog micro etching los txhim kho cov adhesion ntawm cov txheej tom ntej.
Hlau deposition: Hlau yog muab tso rau hauv kub ntiv tes siv txoj kev electroplating los ua ib txheej hlau txheej. Cov txheej txheem no yuav tsum muaj kev tswj xyuas nruj ntawm qhov sib xws thiab thickness ntawm cov hlau deposition, nrog rau tsis txhob muaj npuas thiab tsis zoo deposition. Kub plating yog ib kauj ruam tseem ceeb hauv kev tsim cov ntiv tes kub, feem ntau yog siv ob txoj kev: electroplating lossis tshuaj plating. Electroplating yog txheej txheem ntawm kev tso cov txheej kub hauv cov electrolyte los ntawm cov hluav taws xob tam sim no, uas yog tsim rau cov ntawv thov uas yuav tsum muaj txheej txheej kub; Tshuaj plating yog cov txheej txheem ntawm kev txo thiab tso cov ions kub ntawm cov ntiv tes kub siv tus neeg sawv cev txo qis nyob rau hauv tsis muaj cov xwm txheej tam sim no. Nws yog tsim rau cov ntawv thov uas xav tau ntau dua uniformity thiab precision ntawm txheej.
Ntxuav thiab polishing: Tom qab ua tiav cov hlau deposition, ntxuav thiab txhuam qhov saum npoo ntawm cov ntiv tes kub kom ntseeg tau tias nws yog du, ci, tsis muaj stains thiab xeb.
Kev Ntsuas thiab Kev Ntsuam Xyuas: Ua tib zoo tshuaj xyuas thiab ntsuas qhov kev sib cuag, kev ua haujlwm, thiab qhov tshwm sim ntawm tus ntiv tes kub kom ntseeg tau tias qhov zoo ntawm tus ntiv tes kub ua tau raws li tus qauv yuav tsum tau ua. Tom qab cov kub plating tiav lawm, kev soj ntsuam nruj nruj yog ua los ntawm cov ntiv tes kub, nrog rau kev tshuaj xyuas qhov muag, txheej thickness ntsuas, hardness testing, thiab hluav taws xob continuity testing, kom ntseeg tau tias cov khoom ua tau raws li cov qauv specifications thiab cov qauv kev lag luam.
2, Qhov zoo ntawm Golden ntiv tes Craftsmanship
Txhim khu kev sib txuas: Raws li qhov taw qhia kev sib txuas ntawm ntug ntawm pcb, tus ntiv tes golden tuaj yeem ua tiav cov teeb liab kev sib txuas thiab kev sib txuas. Nyob rau hauv lub computer nco modules, graphics phaib, thiab lwm yam kho vajtse, tag nrho cov teeb liab kis tau los ntawm kub ntiv tes los txhim kho lub motherboard lub functionality, xws li txuas cov khoom ntawm lub cim xeeb, graphics phaib, suab phaib, network phaib, thiab lwm yam phaib thiab slots, uas muaj peev xwm kis tau zoo graphics thiab siab fidelity suab.
Kev ua tau zoo: Cov ntiv tes kub yog ua los ntawm cov khoom siv hlau thiab muaj cov khoom siv hluav taws xob zoo, uas muaj txiaj ntsig zoo rau kev txhim kho kev sib kis hluav taws xob. Kub muaj superior conductivity thiab muaj peev xwm ua kom cov teeb liab tsawg tsawg thaum kis tau tus mob.
Kev tiv thaiv corrosion: Hlau kub ntiv tes muaj kev tiv thaiv corrosion thiab tuaj yeem tiv thaiv pcb npoo ntawm ib puag ncig yaig. Kub muaj cov khoom muaj zog antioxidant, uas tuaj yeem tiv thaiv cov kab hluav taws xob sab hauv los ntawm kev xeb thiab txuas ntxiv lub neej kev pab cuam ntawm Circuit Court boards.
Yooj yim rau nruab: Cov ntiv tes kub tsim ua kom yooj yim rau nruab cov ntawv luam tawm hauv Circuit Court rau hauv cov khoom siv lossis cov khoom sib txuas, ua kom yooj yim rau kev siv thiab kev saib xyuas ntawm lub rooj tsav xwm hauv Circuit Court. Nws cov duab tshwj xeeb thiab kev ua haujlwm pab txhawb kev ua haujlwm ntawm daim npav. Piv txwv li, txhawm rau ua kom yooj yim rau kev ntxig daim npav, txoj haujlwm "golden finger" tsis muaj lub ntsej muag muag, thiab txhua qhov rais qhib. Yog tias lub qhov rais tsis qhib, yuav muaj lub ntsej muag lub ntsej muag ntawm tus "golden ntiv tes", uas yuav poob tawm thaum lub sij hawm ntau qhov ntxig thiab tshem tawm cov txheej txheem, ua rau tsis muaj peev xwm tiv tauj rau daim npav qhov.
Kev siv dav: Golden ntiv tes thev naus laus zis tau siv dav hauv ntau yam khoom siv hluav taws xob, tshwj xeeb tshaj yog tsim rau kev sib txuas interface tsim uas yuav tsum tau nquag ntxig thiab tshem tawm lossis muaj kev xav tau siab. Hauv computer peripherals xws li hais lus, subwoofers, scanners, printers, thiab saib, thiab lwm yam
3, Kev ceev faj rau Golden ntiv tes Craftsmanship
Kev tsim tshwj xeeb: Kub plated connectors yuav tsum tsis txhob muab tso rau ze PTH; Tsis muaj daim npog ntsej muag lossis tshuaj ntsuam luam ntawv ze ntawm tus ntiv tes golden, thiab lub ntsej muag lub ntsej muag thiab tshuaj ntsuam luam ntawv yuav tsum tau khaws cia ntawm qhov deb ntawm tus ntiv tes golden; Txhawm rau ua oblique lub kaum sab xis kho ntawm cov npoo ntawm pcb, cov ntiv tes kub yuav tsum tsis txhob tig ntsej muag rau nruab nrab ntawm pcb; Golden ntiv tes yuav tsum tau chamfered, feem ntau ntawm lub kaum sab xis 45 degree; Nws tsis pom zoo kom nteg tooj liab rau hauv cov ntiv tes golden kom txo qhov impedance sib txawv nrog cov kab impedance, uas kuj yog qhov zoo rau ESD; Cov ntiv tes kub feem ntau xav tau electroplating nrog tawv kub kom hnav tsis kam.
Kev xaiv kev kho deg:
Electroplated npib tsib xee kub: thickness tuaj yeem ncav cuag 3-50 microinches. Vim nws superior conductivity, oxidation tsis kam, thiab hnav tsis kam, nws yog dav siv nyob rau hauv kub ntiv tes luam Circuit Court boards uas yuav tsum tau nquag tso thiab rho tawm los yog txhua yam kev sib txhuam. Txawm li cas los xij, vim yog tus nqi kub plating, nws tsuas yog siv rau kev kho mob kub hauv zos, xws li cov ntiv tes kub.
Tshuaj immersion kub: Lub thickness feem ntau yog 1 micro nti, nrog rau qhov siab tshaj plaws ntawm 3 micro inches. Nws zoo heev conductivity, flatness, thiab solderability yog dav siv nyob rau hauv siab -precision printed Circuit Court boards rau lub luag hauj lwm tseem ceeb, kev sib raug zoo integrated circuits, pob grid arrays, thiab lwm yam tsim. Rau cov ntiv tes kub luam ntawv Circuit Court boards uas tsis tshua muaj hnav tsis kam, tag nrho cov txheej txheem tshuaj chemical deposition kub kuj raug xaiv, thiab tus nqi ntawm cov tshuaj deposition kub txheej txheem yog tsawg dua li ntawm electroplating kub txheej txheem. Cov xim ntawm cov txheej txheem tshuaj kub deposition yog golden daj.
Tej teeb meem thiab kev daws teeb meem:
Tsis zoo adhesion: Vim tsis txaus adhesion, cov ntiv tes golden yuav tev tawm thiab ib nrab tshem tawm ntawm lub substrate ua ntej nkag mus rau hauv lub tshav pob, ua rau nws yooj yim rau cov ntiv tes golden kom tawg thaum lub sij hawm tom ntej kev ntxig thiab tshem tawm cov txheej txheem. Lub ntsiab yog vim li cas rau qhov tsis txaus adhesion ntawm cov ntiv tes kub yog qhov tsis zoo ua ntej- kev kho mob ua ntej plating, lub sij hawm hluav taws xob ntev nyob rau hauv cov tshuaj plating, organic paug ntawm cov tshuaj plating, thiab kub npib tsib xee lub tog raj kheej.
Cov xim kub tsis zoo: suav nrog kev hloov xim, xim daj, xim dub, thiab lwm yam. Cov xim tsis zoo tuaj yeem yog vim cov pinholes hauv cov txheej kub, uas corrode Ni hauv qab nrog oxygen; Lub macula tej zaum yuav raug cuam tshuam los ntawm cov kua qaub thaum lub sij hawm sib dhos; Cov pob dub tej zaum yuav tshwm sim los ntawm cov impurities heev corrosive adhering rau saum npoo ntawm txheej kub, los yog los ntawm cov dub disk tshwm sim los ntawm oxidation ntawm Ni txheej. Cov kev daws teeb meem suav nrog kev txhim kho kev tswj xyuas zoo ntawm pcb ENIGNi (P) / Au cov txheej txheem thiab cov txheej txheem, ua kom lub thickness ntawm txheej kub kom ntau li ntau tau, thiab txo cov pinholes hauv txheej kub; Qhia kom siv cov txheej txheem Ni / Au electroplating rau cov ntiv tes kub.
Rough kub nto: Qhov saum npoo tsis du thiab muaj pob thiab kev nyuaj siab. Kev tswj nruj ntawm cov txheej txheem tsis yog yuav tsum tau ua thaum lub sijhawm tsim khoom los xyuas kom meej qhov sib xws ntawm cov hlau deposition.