Cov yooj yim lub hom phiaj ntawm PCB nto kev kho mob yog los xyuas kom meej zoo weldability los yog hluav taws xob performance.Because lub ntuj tooj liab nyob rau hauv cov huab cua nyhav yuav nyob rau hauv daim ntawv ntawm oxides, nws yog tsis zoo li mus nyob twj ywm tooj liab rau ib ntev lub sij hawm, yog li tooj liab uas yuav tsum tau rau lwm yam kev kho .
1.Hot Cua Leveling (Hal / HASL)
Cov huab cua kub leveling, kuj hu ua huab cua kub solder leveling (feem ntau hu ua Hal / HASL), uas yog loj rau lub PCB nto cua sov molten tin solder (lead) thiab siv compressed cua mus rau lub tag nrho (tshuab) tiaj technology, ua nws daim ntawv ib tug txheej ntawm tooj liab oxidation tsis kam, thiab yuav muab tau zoo weldability ntawm lub txheej layer.The solder thiab tooj liab yog tsim nyob rau hauv cov pob qij tsim tau ib compound.The PCB yuav tsum muab raus nyob rau hauv molten solder thaum lub sij hawm huab cua kub conditioning.The cua riam flushes lub kua solder ua ntej cov tshuaj lo solidifies.The cua riam yuav txo tau cov dabtsi yog khoov ntawm cov tshuaj lo rau cov tooj liab nto thiab tiv thaiv kom txhob Vuam choj.
2.Organic Weldable Tiv Thaiv Tus neeg saib xyuas (OSP)
OSP sau Circuit Court board (PCB) tooj liab ci nto kev kho mob ntawm ib yam ntawm cov technology kom tau raws li cov cai ntawm RoHS directive.OSP yog ib tug tsiaj ntawv ntawm Organic Solderability preservative. Nws kuj hu ua tus Organic soldering zaj duab xis, kuj hu ua tus tooj liab protector, thiab kuj hu ua Preflux nyob rau hauv English.In ib tug nutshell, lub OSP yog ib tug sib hloov txheej ntawm cov organic daim tawv nqaij rau ntawm qhov chaw huv, liab qab copper.This zaj duab xis muaj anti-oxidation, thermal poob siab thiab ya raws kuj, uas muaj peev xwm tiv thaiv cov tooj liab nto los ntawm xeb (oxidation los yog vulcanization) nyob rau hauv ib txwm environment.But nyob rau hauv lub tom ntej vuam tshav kub, tus tiv thaiv zaj duab xis thiab yuav tsum tau sai sai tshem tawm los ntawm flux yooj yim, li ntawd, cia li yuav ua huv tooj liab nto ntawm tus yeeb yam yog nyob rau hauv ib tug heev luv luv lub sij hawm ntawm lub sij hawm nrog molten solder tam sim ntawd los ua ib tug khoom solder pob qij txha.
3.Full Phaj Nickel / Kub
Phaj Nickel / Kub yog plated rau ntawm qhov chaw ntawm PCB thiab ces plated nrog ib tug txheej ntawm kub. Cov npib tsib xee plating yog mas los mus tiv thaiv lub diffusion ntawm kub thiab copper.Now muaj ob hom ntawm electroplating npib tsib xee kub: mos kub plating (kub, kub nto zoo tsis kaj) thiab nyuaj kub plating (nto du thiab nyuaj, hnav-tiv , muaj lwm yam hais xws li cobalt, kub zoo ntau lub teeb) .Soft kub yog tsuas yog siv rau nti ntim kub hlau; Lub nyuaj kub yog tsuas yog siv rau hluav taws xob interconnection nyob rau hauv uas tsis yog-vuam chaw.
4.Immersion Kub
Immersion kub yog coated nrog ib tug tuab, electrically zoo npib tsib xee-kub hlau rau cov tooj liab nto, uas muaj peev xwm tiv thaiv PCB rau ib ntev lub time.In tas li ntawd, nws muaj lub siab tev taus ntawm lwm nto kev kho mob technologies.In tas li ntawd, sinking kub kuj tiv thaiv tau cov xaus ntawm tooj liab, uas yuav yuav lig mus ua-free los ua ke.
5.Immersion Tin
Txij li thaum tag nrho cov solders yog raws li nyob rau hauv tin, lub tin txheej yuav phim txhua yam ntawm solder.Tin txheej txheem ntawm tiaj tooj liab tin tebchaw peev xwm yuav tsim, qhov no feature yuav ua rau hnyav tin muaj zoo li huab cua kub leveling zoo weldability thiab tsis muaj huab cua kub leveling flatness ntawm mob taub hau teeb meem; immersion tin tsis tau khaws cia rau ntev heev thiab yuav tsum tau koom ua ke raws li qhov kev txiav txim ntawm hauv tin.
6.Immersion Nyiaj
Lub nyiaj txheej txheem yog nruab nrab ntawm organic txheej thiab electroless npib tsib xee plating. Tus txheej txheem yog tej yam yooj yim thiab fast.Even thaum raug tshav kub kub, av noo thiab muaj kuab paug, nyiaj yuav muaj zoo weldability tab sis yuav poob nws luster.The nyiaj tsis muaj tus zoo lub dag lub zog ntawm cov tshuaj plating npib tsib xee / sinking kub vim hais tias muaj yog tsis muaj npib tsib xee nyob rau hauv cov nyiaj txheej.
7.ENEPIG (Electroless Nickel Electroless Palladium Immersion Kub)
Piv nrog rau ENEPIG thiab ENIG, muaj ib tug ntxiv txheej ntawm palladium ntawm npib tsib xee thiab kub. Palladium yuav tiv thaiv tau xeb phenomenon tshwm sim los ntawm cov tshuaj tiv thaiv hloov, thiab ua tag nrho cov kev npaj rau immersion gold.Gold yog zoo them nrog palladium, muab ib tug zoo interface.
8.Plating Hard kub
Nyob rau hauv thiaj li yuav txhim kho cov kev coj-tiv khoom teejtug uas yog cov khoom, nce lub zoo xov tooj thiab cov plating nyuaj kub.
