Dab tsi yog kub plating rau saum npoo ntawm PCB

1.Surface kev kho mob ntawm PCB board: anti-oxidation, tin spray, lead-free spray tin, immersion kub, immersion tin, immersion nyiaj, hard kub plating, tag nrho board kub plating, kub ntiv tes, npib tsib xee palladium kub OSP: tus nqi qis, solderability Zoo, hnyav cia tej yam kev mob, lub sij hawm luv luv, ib puag ncig tus phooj ywg txheej txheem, zoo vuam, tiaj tus.

Tin spraying board yog feem ntau muaj ntau txheej (4-46 txheej) high-precision PCB template, uas tau siv los ntawm ntau yam kev sib txuas lus hauv tsev loj, khoos phis tawj, khoom siv kho mob thiab chaw lag luam aerospace thiab cov chaw tshawb fawb. ) yog qhov kev sib txuas ntawm lub cim xeeb stick thiab lub cim xeeb qhov, thiab tag nrho cov teeb liab kis tau los ntawm tus ntiv tes kub.

Cov ntiv tes kub yog tsim los ntawm ntau cov neeg sib cuag golden-daj, uas yog hu ua "cov ntiv tes kub" vim tias qhov saum npoo yog kub-plated thiab cov conductive hu tau teem caij zoo li cov ntiv tes. Cov ntiv tes kub tiag tiag yog them nrog txheej kub ntawm tooj liab clad laminate los ntawm cov txheej txheem tshwj xeeb, vim tias kub muaj zog oxidation tsis kam thiab muaj zog conductivity. Txawm li cas los xij, vim yog tus nqi siab ntawm kub, feem ntau nco yog tam sim no hloov los ntawm tin plating. Txij li thaum xyoo 1990, cov ntaub ntawv tin tau nrov heev. Tam sim no, "gold fingers" ntawm motherboards, nco thiab graphics phaib yuav luag txhua tus siv. Cov khoom siv tin, tsuas yog qee qhov kev ua haujlwm siab / chaw ua haujlwm txuas nrog cov ntsiab lus tseem yuav siv kub plating, uas yog kim heev.

2. Vim li cas thiaj siv cov phaj kub-plated

Raws li qib kev sib koom ua ke ntawm IC tau nce siab thiab siab dua, qhov ntau thiab denser IC pins yog. Cov txheej txheem ntsug tin tsuag yog qhov nyuaj rau flatten cov ntaub nyias nyias, uas ua rau muaj teeb meem rau SMT qhov chaw; Tsis tas li ntawd, lub txee lub neej ntawm cov tin spray board yog luv heev. Cov phaj kub-plated tsuas yog daws cov teeb meem no:

(1) Rau cov txheej txheem nto mount, tshwj xeeb tshaj yog rau 0603 thiab 0402 ultra-me me nto mount, vim hais tias lub flatness ntawm lub ncoo yog ncaj qha cuam tshuam rau qhov zoo ntawm solder paste txheej txheem luam ntawv, nws muaj ib tug txiav txim zoo ntawm qhov zoo. tom qab reflow soldering. Phaj kub plating yog muaj nyob rau hauv high-density thiab ultra-me me nto mount txheej txheem.

(2) Nyob rau theem kev sim tsim, cuam tshuam los ntawm cov yam ntxwv xws li kev yuav khoom, feem ntau tsis yog lub rooj tsavxwm yuav raug welded tam sim ntawd tom qab nws tuaj txog, tab sis nws yuav siv sij hawm ntau lub lis piam lossis ib hlis los siv nws. Lub txee lub neej ntawm lub rooj tsavxwm kub-plated yog ntev tshaj li Lead-tin alloys ntau zaus, yog li txhua tus neeg txaus siab siv lawv. Tsis tas li ntawd, tus nqi ntawm kub-plated PCBs nyob rau hauv cov qauv theem yog yuav luag tib yam li cov hlau lead-tin alloy boards.

Tab sis raws li cov xaim ua kom ntom ntom, kab dav thiab qhov sib txawv tau mus txog 3-4MIL.

Yog li ntawd, qhov teeb meem ntawm luv luv-circuiting ntawm cov hlau kub yog coj los txog: raws li qhov zaus ntawm lub teeb liab yuav siab dua thiab siab dua, kev sib kis ntawm cov teeb liab nyob rau hauv ntau txheej txheej tshwm sim los ntawm cov nyhuv ntawm daim tawv nqaij muaj kev cuam tshuam ntau dua rau cov teeb liab. teeb liab zoo.

Cov nyhuv ntawm daim tawv nqaij yog hais txog: siab zaus alternating tam sim no, lub tam sim no yuav nyiam mloog nyob rau saum npoo ntawm cov hlau ntws. Raws li kev suav, qhov tob ntawm daim tawv nqaij yog nyob ntawm zaus.

3. Vim li cas thiaj siv immersion kub phaj

Yuav kom daws tau cov teeb meem saum toj no ntawm cov laug cam kub plated, PCBs siv immersion kub boards feem ntau muaj cov yam ntxwv hauv qab no:

(1) Vim hais tias cov qauv siv lead ua tsim los ntawm immersion kub thiab kub plating yog txawv, immersion kub yuav ntau golden daj dua kub plating, thiab cov neeg muas zaub txaus siab.

(2) Vim hais tias cov qauv siv lead ua tsim los ntawm immersion kub thiab kub plating sib txawv, immersion kub yog yooj yim rau weld dua kub plating, thiab nws yuav tsis ua rau vuam tsis zoo thiab ua rau cov neeg tsis txaus siab.

(3) Txij li thaum lub immersion kub board tsuas muaj nickel kub ntawm lub ncoo, kis tau tus mob ntawm lub teeb liab nyob rau hauv daim tawv nqaij nyhuv yog nyob rau hauv lub tooj liab txheej thiab yuav tsis cuam tshuam rau lub teeb liab.

(4) Piv nrog kub plating, immersion kub muaj cov qauv siv lead ua denser thiab tsis yooj yim los tsim oxidation.

(5) Vim tias cov phaj kub immersion tsuas muaj npib tsib xee-kub ntawm lub ncoo, nws yuav tsis tsim cov hlau kub thiab ua rau luv luv.

(6) Txij li thaum lub immersion kub board tsuas muaj npib tsib xee-kub ntawm lub ncoo, kev sib xyaw ntawm lub ntsej muag solder ntawm txoj kab thiab cov txheej tooj liab muaj zog dua.

(7) Qhov project yuav tsis cuam tshuam qhov sib nrug thaum them nyiaj.

(8) Vim hais tias cov qauv siv lead ua tsim los ntawm immersion kub thiab kub plating yog qhov sib txawv, qhov kev ntxhov siab ntawm immersion kub phaj yog yooj yim los tswj, thiab rau cov khoom uas muaj kev sib raug zoo, nws yog ntau conducive rau bonding ua. Nyob rau tib lub sijhawm, nws yog qhov tseeb vim tias immersion kub yog softer dua kub plating, yog li cov ntiv tes kub ntawm immersion kub phaj tsis hnav-resistant.

(9) Lub flatness thiab standby lub neej ntawm immersion kub phaj yog zoo li cov phaj kub-plated.

4. Immersion Gold Phaj VS Kub Plated Phaj

Qhov tseeb, cov txheej txheem kub plating yog muab faib ua ob hom: ib qho yog kub electroplating thiab lwm yam yog immersion kub.

Rau cov txheej txheem kub plating, cov nyhuv ntawm tin yog txo qis, thiab cov nyhuv ntawm immersion kub yog zoo dua; tshwj tsis yog cov chaw tsim khoom yuav tsum tau khi, feem ntau cov tuam ntxhab tam sim no yuav xaiv cov txheej txheem immersion kub! Feem ntau tshwm sim Nyob rau hauv cov ntaub ntawv ntawm PCB nto kev kho mob, cov nram qab no hom yog: kub plating (kub electroplating, immersion kub), nyiaj plating, OSP, tin spraying (lead thiab lead-free), cov hom no mas yog rau FR {{1} } los yog CEM-3 thiab lwm yam boards Hauv lwm lo lus, cov ntaub ntawv hauv paus kuj muaj cov txheej txheem kho saum npoo ntawm rosin txheej; Yog hais tias lub tin tsis zoo (kev noj zaub mov tsis zoo), yog tias cov txheej txheem tsim khoom thiab cov khoom siv ntawm cov tshuaj txhuam hniav thiab lwm cov chip manufacturers raug cais tawm.

Qhov no tsuas yog rau cov teeb meem PCB, muaj ntau yam laj thawj:

(1) Thaum lub sij hawm luam ntawv PCB, seb puas muaj roj seepage zaj duab xis saum npoo ntawm PAN txoj hauj lwm, nws tuaj yeem thaiv cov nyhuv ntawm tin; qhov no tuaj yeem txheeb xyuas tau los ntawm kev sim tshuaj tin bleaching.

(2) Seb lub moistening ntawm PAN txoj hauj lwm ua tau raws li qhov yuav tsum tau ua, uas yog, seb lub ncoo tsim tuaj yeem ua kom muaj kev txhawb nqa ntawm cov khoom.

(3) Seb lub ncoo muaj kuab paug, uas tuaj yeem tau txais los ntawm ion pollution test; peb lub ntsiab lus saum toj no yog qhov tseem ceeb hauv kev txiav txim siab los ntawm PCB cov tuam txhab.

Hais txog qhov zoo thiab qhov tsis zoo ntawm ntau txoj hauv kev ntawm kev kho saum npoo, txhua tus muaj nws qhov zoo thiab qhov tsis zoo!

Hais txog kub plating, nws tuaj yeem ua rau PCB khaws cia rau lub sijhawm ntev, thiab nws tsis tshua muaj kev cuam tshuam los ntawm kev kub thiab av noo (xws li lwm yam kev kho deg), thiab feem ntau tuaj yeem khaws cia rau ib xyoos; tin spray nto kho yog thib ob, OSP yog dua, qhov no yog ib qho kev mloog ntau yuav tsum tau them rau lub sij hawm cia ntawm ob qhov chaw kho mob ntawm ambient kub thiab av noo.

Feem ntau, kev kho deg ntawm immersion nyiaj yog qhov txawv me ntsis, tus nqi kuj tseem siab, qhov chaw cia khoom hnyav dua, thiab nws yuav tsum tau ntim nrog cov ntawv tsis muaj sulfur! Thiab lub sijhawm cia yog li peb lub hlis! Nyob rau hauv cov nqe lus ntawm tin tinting nyhuv, immersion kub, OSP, qhov tseeb, tshuaj tsuag tin, thiab lwm yam yuav luag tib yam, manufacturers mas xav txog tus nqi kev ua tau zoo nam!