1. Nto PCB: OSP, HASL, Lead-free HASL, Immersion Tin, ENIG, Immersion Silver, Hard kub plating, Plating kub rau tag nrho lub rooj tsavxwm, kub ntiv tes, ENEPIG…
OSP: tus nqi qis, zoo solderability, hnyav cia, lub sij hawm luv luv, ib puag ncig technology, zoo vuam, du ...
HASL: feem ntau nws yog multilayers HDI PCB Samples (4 - 46 txheej), tau siv los ntawm ntau qhov kev sib txuas lus loj, khoos phis tawj, khoom siv kho mob thiab chaw lag luam aerospace thiab cov chaw tshawb fawb.
Kub ntiv tes: nws yog qhov kev sib txuas ntawm lub cim xeeb qhov thiab lub cim xeeb nti, tag nrho cov teeb liab raug xa los ntawm tus ntiv tes kub.
Cov ntiv tes kub yog muaj ntau yam kev sib cuag kub, uas yog hu ua "gold finger" vim lawv cov kub-plated nto thiab lawv cov ntiv tes zoo li kev npaj. Cov ntiv tes kub tau siv cov txheej txheem tshwj xeeb rau lub tsho tooj liab cladding nrog kub, uas yog resistant rau oxidation thiab heev conductive. Tab sis tus nqi ntawm kub yog kim, tam sim no tin plating yog siv los hloov lub cim xeeb ntau dua. Los ntawm lub xyoo pua xeem 90s, cov khoom siv tin tau pib nthuav tawm, cov motherboard, nco, thiab cov khoom siv video xws li "gold finger" yuav luag txhua zaus siv cov khoom siv tin, tsuas yog qee qhov kev ua haujlwm siab server / workstation accessories yuav tiv tauj mus ntxiv. xyaum siv kub plated, yog li tus nqi muaj me ntsis ntawm kim.
2. Vim li cas thiaj siv cov khoom kub plating?
Nrog rau kev koom ua ke ntawm IC siab dua thiab siab dua, IC ko taw ntau dua thiab ntom. Thaum cov txheej txheem ntsug tin txau yog qhov nyuaj rau tshuab cov vuam zoo pad tiaj tus, uas ua rau nyuaj rau SMT mounting; Tsis tas li ntawd, lub txee lub neej ntawm tin spraying phaj yog luv heev. Txawm li cas los xij, lub phaj kub daws cov teeb meem no:
1.) Rau nto mount technology, tshwj xeeb tshaj yog rau 0603 thiab 0402 ultra-me lub rooj mount, vim hais tias lub flatness ntawm lub vuam ncoo yog ncaj qha cuam tshuam rau qhov zoo ntawm lub solder paste luam ntawv txheej txheem, nyob rau sab nraum qab ntawm re-flow vuam zoo muaj ib qho kev txiav txim siab, yog li, tag nrho cov phaj kub plating nyob rau hauv siab ceev thiab ultra-me me rooj mount tshuab feem ntau pom.
2.) Nyob rau theem kev loj hlob, kev cuam tshuam ntawm cov khoom xws li kev yuav khoom feem ntau tsis yog lub rooj tsavxwm rau vuam tam sim ntawd, tab sis feem ntau yuav tsum tau tos ob peb lub lis piam lossis ntau lub hlis ua ntej siv, txee lub neej ntawm kub plated board yog ntev tshaj li terne. hlau ntau zaus, yog li txhua tus neeg txaus siab txais yuav. Tsis tas li ntawd, kub-plated PCB nyob rau hauv degrees ntawm tus nqi ntawm cov qauv theem piv nrog pewter daim hlau
Tab sis nrog ntau thiab ntau ntom thaiv, kab dav, qhov sib nrug tau mus txog 3-4MIL
Yog li ntawd, nws coj qhov teeb meem ntawm luv luv Circuit Court ntawm cov xov hlau kub: nrog rau qhov nce zaus ntawm cov teeb liab, kev cuam tshuam ntawm cov teeb liab kis tau tus mob nyob rau hauv ntau txheej txheej vim cov nyhuv ntawm daim tawv nqaij ua ntau thiab pom tseeb.
(Cov nyhuv ntawm daim tawv nqaij: Cov zaus hloov pauv tam sim no, qhov tam sim no yuav nyiam mloog zoo rau ntawm qhov chaw ntawm cov hlau ntws.
3. Vim li cas thiaj siv lub immersion kub PCB?
Muaj qee tus yam ntxwv rau lub immersion kub PCB qhia raws li hauv qab no:
1). Tom qab ntawd qhov kev ntxhov siab ntawm cov phaj kub submerged yog yooj yim rau kev tswj, uas yog ntau conducive rau kev ua cov khoom. Nyob rau tib lub sij hawm kuj vim kub yog softer dua kub, yog li kub phaj tsis hnav - resistant kub ntiv tes.
2.) Immersion Kub yog yooj yim rau weld dua kub plating, thiab yuav tsis ua rau vuam tsis zoo thiab cov neeg siv khoom tsis txaus siab.
3). Lub soldermask ntawm lub Circuit Court yog nruj dua ua ke nrog cov txheej tooj liab.
4.) Cov qauv siv lead ua ntawm immersion kub yog denser dua kub plating, nws nyuaj rau tsim oxidation
5.) Yuav tsis muaj qhov cuam tshuam rau qhov sib nrug thaum them nyiaj
6.) Lub flatness thiab kev pab lub neej ntawm cov phaj kub yog zoo li cov phaj kub.
4. Immersion Kub VS Kub plating
Muaj ob hom kub plating tshuab: ib qho yog hluav taws xob kub plating, lwm yam yog Kub Kub.
Rau cov txheej txheem kub plating, cov nyhuv ntawm cov tin raug txo kom tsawg, thiab cov nyhuv ntawm cov kub zoo dua; Tshwj tsis yog cov chaw tsim khoom xav tau kev khi, lossis tam sim no cov tuam txhab feem ntau yuav xaiv cov txheej txheem kub kub!
Feem ntau, kev kho deg ntawm PCB tuaj yeem muab faib ua hom hauv qab no: kub plating (electroplating, immersion kub), nyiaj plating, OSP, HASL (nrog thiab tsis muaj hlau lead), uas feem ntau yog rau FR4 lossis CEM-3 daim hlau, ntawv hauv paus. cov ntaub ntawv thiab rosin txheej nto kho; Ntawm cov tin pluag (noj tin pluag) qhov no yog tias qhov kev tshem tawm ntawm cov chaw tsim tshuaj paus thiab cov khoom siv vim li cas.
Muaj qee qhov laj thawj rau qhov teeb meem PCB:
1.Thaum PCB luam ntawv, txawm tias muaj roj permeating zaj duab xis saum npoo ntawm PAN, nws tuaj yeem thaiv cov nyhuv ntawm tin; Qhov no tuaj yeem txheeb xyuas tau los ntawm kev sim ntsuas float
2.Txawm hais tias lub embellish txoj hauj lwm ntawm PAN tuaj yeem ua tau raws li cov qauv tsim, uas yog, seb lub vuam ncoo tuaj yeem tsim los xyuas kom muaj kev txhawb nqa ntawm cov khoom.
3.Lub vuam ncoo tsis muaj paug, uas tuaj yeem ntsuas tau los ntawm kev sib kis ion.
Hais txog qhov chaw:
Kub plating, nws tuaj yeem ua rau PCB cia lub sijhawm ntev dua, thiab los ntawm qhov chaw sab nraud qhov kub thiab av noo hloov pauv me me (piv rau lwm qhov kev kho saum npoo), feem ntau, tuaj yeem khaws cia txog li ib xyoos; HASL los yog lead dawb HASL nto kho thib ob, OSP dua, ob qho tib si saum npoo kev kho nyob rau hauv ib puag ncig kub thiab av noo cia lub sij hawm yuav tsum xyuam xim rau ntau nyob rau hauv ib txwm muaj xwm txheej, nyiaj nto kho mob yog me ntsis txawv, tus nqi kuj siab, preservation. Cov xwm txheej xav tau ntau dua, qhov yuav tsum tau siv tsis muaj leej faj daim ntawv ntim ua tiav! Thiab khaws cia li ntawm peb lub hlis! Ntawm cov nyhuv tin, kub, OSP, tin spray yog tiag tiag txog tib yam, cov tuam txhab lag luam feem ntau xav txog cov nqi ua haujlwm!