Kub ntiv tes

Nyob rau hauv lub computer nco sticks thiab graphics phaib, peb yuav pom ib kab ntawm golden conductive hu, uas yog hu ua "golden ntiv tes". Kub ntiv tes (los yog Edge Connector) hauv PCB tsim thiab kev lag luam tsim khoom siv cov khoom sib txuas ntawm cov khoom sib txuas ua lub qhov hluav taws xob rau lub rooj tsavxwm txuas rau lub network. Tom ntej no, cia peb nkag siab yuav ua li cas nrog cov ntiv tes kub hauv PCB thiab qee cov ntsiab lus.

Nto kho txoj kev ntawm kub ntiv tes PCB
1. Electroplating npib tsib xee kub: thickness mus txog 3-50u", vim nws superior conductivity, oxidation tsis kam thiab hnav tsis kam, nws yog dav siv nyob rau hauv kub ntiv tes PCBs uas yuav tsum tau nquag ntxig thiab tshem tawm los yog PCB boards uas yuav tsum tau nquag mechanical kev sib txhuam saum toj no, tab sis vim yog tus nqi siab ntawm kub plating, nws tsuas yog siv rau ib nrab kub plating xws li cov ntiv tes kub.

2. Immersion kub: Lub thickness yog cov pa 1u ", mus txog 3u" vim nws superior conductivity, flatness thiab solderability, nws yog dav siv nyob rau hauv high-precision PCB boards nrog khawm txoj hauj lwm, bonded IC, BGA, thiab lwm yam. Kub ntiv tes PCBs nrog cov kev cai hnav tsis tshua muaj peev xwm kuj tuaj yeem xaiv tag nrho cov txheej txheem immersion kub. Tus nqi ntawm cov txheej txheem immersion kub yog qis dua li ntawm cov txheej txheem electro-kub. Cov xim ntawm Immersion Kub yog golden daj.

Kub ntiv tes nthuav dav ua hauv PCB
1) Txhawm rau txhawm rau txhawm rau txhawm rau hnav cov ntiv tes kub, cov ntiv tes kub feem ntau yuav tsum tau plated nrog tawv kub.
2) Golden ntiv tes yuav tsum tau chamfered, feem ntau yog 45 °, lwm cov ces kaum xws li 20 °, 30 °, thiab lwm yam. Yog tias tsis muaj chamfer hauv kev tsim, muaj teeb meem; 45 ° chamfer hauv PCB yog qhia hauv daim duab hauv qab no:

3) Cov ntiv tes kub yuav tsum tau kho raws li tag nrho daim npog ntsej muag kom qhib lub qhov rais, thiab tus PIN tsis tas yuav qhib cov hlau mesh;
4) Immersion tin thiab silver immersion pads yuav tsum nyob ntawm qhov tsawg kawg nkaus ntawm 14mil los ntawm sab saum toj ntawm tus ntiv tes; nws raug pom zoo tias lub ncoo yog ntau tshaj 1 hli ntawm tus ntiv tes thaum tsim, nrog rau ntawm cov ntaub qhwv;
5) Tsis txhob kis tooj liab rau ntawm tus ntiv tes kub;
6) Txhua txheej txheej sab hauv ntawm cov ntiv tes kub yuav tsum tau txiav tooj liab, feem ntau qhov dav ntawm qhov txiav tooj liab yog 3 hli loj dua; nws tuaj yeem siv rau ib nrab ntiv tes txiav tooj liab thiab tag nrho ntiv tes txiav tooj liab.

Puas yog "kub" ntawm cov ntiv tes kub?

Ua ntej, cia peb nkag siab ob lub ntsiab lus: mos kub thiab tawv kub. Mos kub, feem ntau softer kub. Hard kub feem ntau yog ib qho kev sib xyaw ntawm cov kub kub.

Lub luag haujlwm tseem ceeb ntawm tus ntiv tes golden yog txuas, yog li nws yuav tsum muaj hluav taws xob zoo, hnav tsis kam, oxidation tsis kam thiab corrosion kuj.

Vim hais tias kev ntxhib los mos ntawm cov kub ntshiab (kub) yog mos, cov ntiv tes kub feem ntau tsis siv kub, tab sis tsuas yog ib txheej ntawm "nyuaj kub (kub compound)" yog electroplated rau nws, uas tsis tsuas yog tau txais zoo conductivity ntawm kub, tab sis kuj ua rau nws resistant Abrasion kev ua tau zoo thiab oxidation kuj.

Yog li puas tau PCB siv "mos kub"? Cov lus teb yog qhov tseeb muaj kev siv, xws li kev sib cuag ntawm qee lub xov tooj ntawm tes nyees khawm, COB (Chip On Board) nrog txhuas hlau thiab lwm yam. Kev siv cov kub kub yog feem ntau tso nyiaj npib tsib xee kub rau ntawm lub rooj tsavxwm los ntawm electroplating, thiab nws cov thickness tswj tau yooj yim dua.