1. Nto ntawm PCB: Hash, LeL, ແຫວນ TIN, ENTER, Yooj Yim Cov Plating, Plating Kub rau Tag Nrho Board, Kub ntiv tes, Enpig ...
Wm: Tus nqi qis, zoo solderabilabe, lub sijhawm cia, luv luv, kev siv thev naus laus zis ib puag ncig, du ...
HASL: Feem ntau nws yog Multiilayers HDI pcb kuaj (4 - 46 txheej txheem sib txuas lus, tau siv los ntawm cov cuab yeej sib txuas lus ntau ntxiv, cov cuab yeej siv kho mob thiab cov khoom lag luam aerospace thiab kev tshawb fawb.
Cov ntiv tes kub: Nws yog kev sib txuas ntawm lub cim xeeb thiab lub cim xeeb nti, txhua qhov teeb liab tau xa los ntawm cov ntiv tes kub.
Kub ntiv tes Isconsists ntawm ib tug xov tooj ntawm cov neeg sib tw goldenive, uas yog hu ua "kub-plated nto thiab lawv cov ntiv tes-zoo li kev npaj. Cov ntiv tes kub ua tau siv cov txheej txheem tshwj xeeb kom lub taub hau tooj liab cladding nrog kub, uas yog qhov muaj txiaj ntsig zoo rau oxidation thiab kev coj ua. Tab sis tus nqi ntawm kub yog kim, qhov tam sim no tin plating yog siv los hloov lub cim xeeb ntau dua. Los ntawm lub xyoo pua kawg 90 s, cov khoom siv tin, cov ntiv tes xoo, tsuas yog siv cov khoom siv kub, yog li tus nqi muaj me ntsis ntawm cov nqi.
2. Vim li cas siv lub rooj zaum kub plating?
Nrog rau kev sib koom ua ke ntawm cov IC siab dua thiab siab dua, IC ko taw ntau dua thiab ntau dua ntom. Thaum lub sij hawm muab cov txheej txheem sib txaws ntsug yog nyuaj rau tshuab cov ntaub pua chaw zoo nkauj ncoo ncaj, uas coj teeb meem rau SMT Mounting; Ntxiv rau, lub txee lub neej ntawm tin txau phaj yog heev luv. Txawm li cas los xij, cov phaj kub daws cov teeb meem no:
1.) Rau saum npoo mount thev naus laus zis, tshwj xeeb tshaj yog rau 0603 thiab 0402 ultra-me me plating, yog li, tag nrho cov lus rov qab los yog lub rooj ua kom zoo thiab ultra-me me lub rooj siv tau feem ntau pom.
2.) Hauv kev loj hlob theem, tus yam ntxwv ntawm cov khoom siv xws li cov kev faib tawm hauv ib lub lim tiam tam sim ntawd, tab sis ntau lub sijhawm ua ntej siv cov hlau Terne? Dhau li, kub-plated pcb nyob rau qib ntawm tus nqi ntawm theem piv txwv piv nrog pewter daim hlau
Tab sis nrog ntau dua thiab ntau dua cov xaim hluav taws xob, kab dav, placing tau mus txog 3-4mil
Yog li ntawd, nws coj qhov teeb meem ntawm luv Circuit Coal ntawm kub xaim: nrog qhov nce ntawm lub teeb liab sib kis hauv ntau qhov kev sib tw vim yog tawv nqaij ua tau ntau dua thiab
(Cov tawv nqaij tawv nqaij: Cov kev loj dua lwm txoj kev tam sim no, tam sim no yuav zoo li lub ntsej muag, qhov tob raws li qhov tob, qhov tob ntawm daim tawv nqaij muaj feem xyuam rau zaus.)
3. Vim li cas siv cov Immersion kub pcb?
Muaj qee yam ntxwv rau cov Immersion kub pcb qhia raws li hauv qab no:
1.) Cov qauv siv lead ua los ntawm cov kub kub thiab cov xim kub ntau dua li cov neeg siv khoom kub siab dua. Tom qab ntawd kev ntxhov siab ntawm cov tog raj kub phaj yog yooj yim los tswj, uas yog ntau dua rau kev ua cov khoom lag luam. Nyob rau tib lub sijhawm kuj yog tias kub yog softer tshaj kub, yog li kub phaj tsis hnav - resistant kub ntiv tes.
2.) Cov khoom siv kub tshiab yooj yim dua rau weld tshaj li kub plating, thiab yuav tsis ua rau kev tsis txaus siab vuam thiab cov neeg tsis txaus siab.
3.) Lub npib tsib xee kub tsuas pom nyob ntawm vuam pad ntawm Enig pcb, uas yuav tsis cuam tshuam rau lub teeb liab txheej, uas yuav tsis ua rau lub cim luv luv rau cov xaim luv. Cov Soldenmas ntawm lub Circuit Court yog ntau ruaj khov ua ke nrog tus tooj liab txheej.
4.) Cov qauv siv leustal ntawm cov kub kub yog denser dua li kub plating, nws yog qhov nyuaj los tsim oxidation
5.) Yuav tsis muaj kev cuam tshuam rau qhov kev sib ntsib thaum raug them
6.) Lub tiaj huv thiab kev pabcuam lub neej ntawm lub phaj kub yog qhov zoo li ntawm lub phaj kub.
4. Immersion kub vs kub plating
Muaj ob hom kub plating thev naus laus zis: ib qho yog hluav taws xob kub plating, lwm tus yog kub kub kub.
Rau cov txheej txheem rau cov kub, cov nyhuv ntawm cov tin yog txo qis heev, thiab cov nyhuv ntawm cov kub yog qhov zoo dua; Tshwj tsis yog cov chaw tsim tshuaj paus yuav tsum tau cov kev khi, lossis tam sim no feem ntau cov tuam txhab yuav xaiv cov txheej txheem tog cua kub!
Feem ntau, kev kho deg ntawm PCB tuaj yeem faib ua cov hauv qab no: Nyiaj txiag plating, cov ntaub ntawv, cov ntaub ntawv, cov ntaub ntawv, cov ntaub ntawv pib siv cov ntaub ntawv; On tin txom nyem (kev noj mov Tin txom nyem) Qhov no yog tias tshem tawm cov khoom siv muab tshuaj txhuam thiab cov khoom tsim khoom.
Muaj qee qhov laj thawj rau lub PCB teeb meem:
1.During pcb luam ntawv, seb muaj roj permeating zaj duab xis saum lauj, nws tuaj yeem thaiv cov nyhuv ntawm tin; Qhov no tuaj yeem tshawb xyuas los ntawm kev sib ntaus ntawm kev sim ntab
2. Nws tso rau hauv txoj haujlwm loj tuaj yeem ua tau raws li cov qauv tsim tau, puas yog cov vuam ncoo tuaj yeem tsim los txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau ntawm cov ntu.
3.Qhov chaw tsim vuam tsis muaj paug, uas tuaj yeem ntsuas los ntawm ion paug.
Txog saum npoo:
Kub plating, nws tuaj yeem ua rau lub sijhawm pcb cia ntev dua, thiab cov kev hloov pauv sab nraum zoov me me (piv rau lwm qhov kev kho mob saum npoo av), feem ntau, tuaj yeem khaws cia li ib xyoos; HashL lossis Lead Free Hasl Nto Kev Kho Mob Thib Ob, Opity Kev Kho Mob Hauv Ib puag ncig thiab cov pa hluav taws xob ntau dua, qhov yuav tsum tau siv tsis muaj leej faj ntawv ntim khoom lag luam! Thiab khaws nws txog peb lub hlis! Ntawm cov nyhuv tin, kub, wm, tin tsuag yog li qub, cov tuam ntxhab yog feem ntau los xav txog tus nqi kev ua tau zoo!
