HDI PCB ua nyob rau hauv ib tug automated PCB Hoobkas --- OSP nto tiav
OSP stands rau Organic Solderability Preservative, tseem hu ua circuit board organic txheej los ntawm PCB manufacturers, yog nrov Printed Circuit Board nto tiav vim cov nqi qis thiab yooj yim-rau-siv rau PCB manufacturing.
OSP yog siv tshuaj lom neeg siv cov organic sib txuas rau cov txheej tooj liab los ua cov khoom sib txuas nrog tooj liab ua ntej soldering, tsim cov txheej txheem organic los tiv thaiv cov tooj liab los ntawm xeb.OSP Thickness, yog nyias, ntawm 46µin (1.15µm)-52µin (1.3µm), ntsuas hauv A° (angstrom).
Organic Surface Protectant yog pob tshab, tsis yooj yim rau kev kuaj pom.Nyob rau hauv lub tom ntej no soldering, nws yuav sai sai tshem tawm.Cov txheej txheem tshuaj immersion tsuas yog siv tau tom qab tag nrho lwm cov txheej txheem tau ua tiav, suav nrog Kev Ntsuas Hluav Taws Xob thiab Kev Tshuaj Xyuas.Kev siv OSP nto tiav rau PCB feem ntau suav nrog cov txheej txheem tshuaj lom neeg lossis lub tank ntsug.
Cov txheej txheem feem ntau zoo li no, nrog yaug ntawm txhua kauj ruam:
1) Kev ntxuav.
2) Kev txhim kho saum toj kawg nkaus: Cov tooj liab tau pom nyob rau hauv micro-etching kom muaj kev sib raug zoo ntawm pawg thawj coj saib thiab OSP.
3) Acid yaug hauv cov tshuaj sulfuric acid.
4) OSP daim ntawv thov: Lub sijhawm no hauv cov txheej txheem, OSP kev daws teeb meem yog siv rau PCB.
5) Deionization yaug: OSP cov tshuaj yog infused nrog ions kom yooj yim tshem tawm thaum lub sij hawm soldering.
6) Qhuav: Tom qab OSP tiav lawm, PCB yuav tsum tau qhuav.
OSP nto tiav yog ib qho ntawm cov khoom siv nrov tshaj plaws.Nws yog ib qho kev lag luam zoo heev, ib puag ncig tus phooj ywg kev xaiv rau luam tawm Circuit Boards raug tsim.Nws tuaj yeem muab co-planar pads nto rau qhov chaw zoo / BGA / cov khoom me me.OSP nto yog kho tau zoo, thiab tsis xav tau cov cuab yeej siv siab.
Txawm li cas los xij, OSP tsis zoo li qhov xav tau.Nws muaj nws downsides.OSP yog rhiab heev rau kev tuav thiab yuav tsum tau tuav nruj me ntsis kom tsis txhob khawb.Feem ntau, ntau yam soldering tsis pom zoo vim Ntau qhov kev sib txuas tuaj yeem ua rau cov yeeb yaj kiab puas.Nws lub neej txee yog luv tshaj plaws ntawm tag nrho cov saum npoo tiav.Cov laug cam yuav tsum tau sib sau ua ke sai sai tom qab siv cov txheej txheem.Qhov tseeb, PCB cov chaw muab kev pabcuam tuaj yeem txuas ntxiv nws lub txee lub neej los ntawm ntau qhov rov ua tiav.OSP yog qhov nyuaj heev rau kev sim lossis tshuaj xyuas vim nws qhov pob tshab.
Pros:
1) Tsis muaj txhuas
2) Flat nto, zoo rau lub suab zoo (BGA, QFP ...)
3) txheej txheej nyias heev
4) tuaj yeem siv ua ke nrog lwm cov khoom tiav (xws li OSP + ENIG)
5) Tus nqi qis
6) Reworkability
7) Cov txheej txheem yooj yim
Cons:
1) Tsis zoo rau PTH
2) Kev Ntsuas Kev Ntsuas
3) Lub neej luv luv (<6 lub hlis)
4) Tsis haum rau crimping tshuab
5) Tsis zoo rau ntau reflow
6) Copper yuav raug nthuav tawm ntawm lub rooj sib txoos, yuav tsum tau ua kom nruj heev
7) Tsis yooj yim rau kev tshuaj xyuas, yuav ua rau muaj teeb meem hauv kev sim ICT
Hom kev siv:
1) Cov khoom siv suab zoo: Qhov kev ua tiav no yog qhov zoo tshaj plaws los siv rau cov khoom siv suab zoo vim tias tsis muaj co-planar pads lossis qhov chaw tsis sib xws.
2) Cov neeg rau zaub mov boards: OSP's siv ntau yam los ntawm cov ntawv thov qis kawg mus rau cov neeg rau zaub mov siab.Qhov kev hloov pauv dav dav hauv kev siv tau ua rau nws haum rau ntau daim ntawv thov.Nws kuj yog feem ntau siv rau kev xaiv tiav.
3) Nto mount technology (SMT): OSP ua haujlwm zoo rau SMT sib dhos, rau thaum koj xav tau txuas ncaj qha mus rau PCB qhov chaw.
Rov qabrau Blogs
Post lub sij hawm: Feb-02-2023
