Niaj hnub no, raws li cov khoom siv hluav taws xob txuas ntxiv mus rau kev tsim kho me me thiab kev ua haujlwm siab, kev ua haujlwm ntawm lub rooj tsav xwm hauv Circuit Court, raws li lub hauv paus tseem ceeb ntawm cov tshuab hluav taws xob, cuam tshuam ncaj qha rau kev ua haujlwm zoo ntawm cov khoom siv. Cov txheej txheem thev naus laus zis ntawm circuit boards, raws li ib qho tseem ceeb txhais tau tias los txhim kho kev ua tau zoo ntawm Circuit Court boards, tau txais kev saib xyuas ntxiv. Nws ua lub luag haujlwm tseem ceeb hauv kev ua haujlwm ruaj khov thiab txuas ntxiv kev pab cuam lub neej ntawm cov khoom siv hluav taws xob los ntawm kev npog qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court nrog ib lossis ntau cov yeeb yaj kiab nyias ntawm cov ntaub ntawv tshwj xeeb, ua rau lub rooj tsav xwm Circuit Court nrog cov yam ntxwv tshiab xws li kev txhim kho conductivity, txhim kho oxidation tsis kam, thiab txhim kho solderability.
1, Lub hom phiaj thiab qhov tseem ceeb ntawm Circuit Court board txheej
(1) Tiv thaiv Circuit Court boards los ntawm ib puag ncig yaig
Thaum siv lub rooj tsav xwm hauv Circuit Court, lawv yuav ntsib ntau yam kev cuam tshuam ib puag ncig, xws li huab cua ntub, corrosive gases, plua plav, thiab lwm yam. Cov khoom no yuav maj mam ua rau cov kab hlau nyob rau saum npoo ntawm lub rooj tsav xwm Circuit Court, ua rau tooj liab ntawv oxidation, kab corrosion, thiab thaum kawg ua rau Circuit Court tsis ua hauj lwm. Coating can form a dense protective film on the surface of the circuit board, effectively isolating direct contact between the external environment and the circuit board, and slowing down the rate of metal oxidation and corrosion. Piv txwv li, nyob rau hauv ib puag ncig hnyav xws li cov ntug hiav txwv dej los yog ib ncig ntawm cov tuam txhab tshuaj, coated circuit boards tuaj yeem muaj kev ua neej nyob ntau zaus ntev dua li cov rooj sib tham tsis muaj coated.
(2) Txhim kho cov hluav taws xob kev ua tau zoo ntawm Circuit Court boards
Qee cov ntaub ntawv txheej muaj cov khoom siv zoo. Los ntawm txheej txheej ntawm lub rooj tsav xwm hauv Circuit Court nrog cov ntaub ntawv no, qhov kev tiv thaiv ntawm Circuit Court tuaj yeem raug txo, thiab kev ua haujlwm thiab kev ruaj ntseg ntawm cov teeb liab kis tau zoo tuaj yeem txhim kho. Nyob rau hauv siab - zaus circuits, teeb liab kis tau tus mob ceev ceev thiab zaus yog siab, yuav tsum tsis tshua muaj siab impedance txuam ntawm Circuit Court. Cov txheej txheej tsim nyog tuaj yeem ua kom zoo dua cov yam ntxwv impedance ntawm Circuit Court, txo cov teeb liab kev cuam tshuam thiab poob, thiab ua kom zoo siab - kis tau tus mob siab - zaus teeb liab. Tsis tas li ntawd, qee cov coatings kuj muaj cov khoom siv rwb thaiv tsev, uas tuaj yeem tsim cov txheej txheem rwb thaiv tsev ntawm lub rooj tsav xwm Circuit Court, cais cov kab uas muaj peev xwm sib txawv, tiv thaiv luv luv Circuit Court, thiab txuas ntxiv txhim kho cov hluav taws xob kev ntseeg siab ntawm lub rooj tsav xwm Circuit Court.
(3) Txhim kho cov solderability ntawm Circuit Court boards
Zoo solderability yog tus yuam sij kom ntseeg tau tias kev sib txuas txhim khu kev qha ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob hauv Circuit Court thaum lub sij hawm sib dhos ntawm Circuit Board. Txawm li cas los xij, oxidation, paug, thiab lwm yam teeb meem nyob rau saum npoo ntawm lub rooj tsav xwm Circuit Court tuaj yeem txo nws cov solderability, ua rau muaj kev tsis zoo xws li cov khoom siv tsis zoo thiab cov khoom siv hluav taws xob. Cov txheej txheem tuaj yeem tshem tawm cov oxides ntawm qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court, tsim cov txheej txheej txheej uas yooj yim rau solder, txhim kho cov ntaub ntub dej thiab kev sib txuas ntawm cov laug cam thiab cov laug cam, ua rau cov txheej txheem soldering smoother, thiab txhim kho kev sib dhos thiab cov khoom zoo.
2, Feem ntau hom Circuit Court board txheej
(1) Tshuaj lom neeg nickel kub plating
Cov tshuaj npib tsib xee kub plating yog ib qho ntawm cov txheej txheem siv dav hauv kev lag luam hauv Circuit Board tam sim no. Cov txheej txheem no ua ntej tso ib txheej ntawm npib tsib xee rau ntawm qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court los ntawm cov tshuaj plating, nrog lub thickness feem ntau ntawm 3-5 μ m. Cov txheej npib tsib xee muaj qhov hnav tsis zoo thiab tiv thaiv corrosion, uas tuaj yeem muab kev tiv thaiv ua ntej rau lub rooj tsav xwm Circuit Court. Lub caij no, lub xub ntiag ntawm cov nickel txheej tuaj yeem tiv thaiv tooj liab los ntawm diffusing rau hauv txheej kub, tsis txhob muaj xim thiab kev ua haujlwm degradation ntawm txheej kub. Nyob rau sab saum toj ntawm cov npib tsib xee txheej, txheej kub yog tso los ntawm kev hloov pauv cov tshuaj tiv thaiv, nrog lub thickness feem ntau yog li ntawm 0.05 txog 0.1 μ m. Cov txheej kub muaj oxidation zoo heev, conductivity, thiab weldability, uas tuaj yeem tiv thaiv cov nickel txheej zoo. Thaum lub sij hawm soldering txheej txheem ntawm cov khoom siv hluav taws xob, cov txheej kub tuaj yeem yaj sai sai hauv cov khoom siv, ua tiav cov txiaj ntsig zoo. Cov txheej txheem electroless npib tsib xee kub plating yog tsim rau Circuit Court boards uas yuav tsum tau high deg flatness, solderability, thiab kev ntseeg tau, xws li lub computer motherboards, mobile xov tooj Circuit Court boards, thiab lwm yam.
(2) Tshuaj lom neeg nickel palladium plating
Cov txheej txheem tshuaj nickel palladium plating yog tsim los ntawm cov txheej txheem tshuaj nickel kub plating. Piv nrog rau ENIG txheej txheem, nws ntxiv ib txheej palladium ntawm cov nickel txheej thiab txheej kub, nrog ib tug tuab feem ntau ntawm 0.05-0.1 μ m. Qhov sib ntxiv ntawm palladium txheej tuaj yeem cuam tshuam qhov tshwm sim ntawm "dub disk" tshwm sim. Qhov tshwm sim "dub disk" yog hais txog cov ntsiab lus tsis sib xws ntawm phosphorus nyob rau saum npoo ntawm cov nickel txheej los yog cov tshuaj tiv thaiv ntawm cov nickel txheej thiab cov kub txheej nyob rau hauv kub thiab high humidity ib puag ncig nyob rau hauv ENIG technology, uas ua rau lub nto ntawm cov nickel txheej tig dub, yog li cuam tshuam rau lub soldering kev kawm thiab kev ntseeg siab ntawm lub Circuit Court board. Cov txheej txheem palladium hauv ENEPIG txheej txheem tuaj yeem tiv thaiv qhov tsis zoo ntawm cov npib tsib xee thiab kub, txhim kho kev ruaj ntseg thiab kev ntseeg siab ntawm cov txheej. Cov txheej txheem no tsim nyog rau thaj chaw uas xav tau kev ntseeg siab heev, xws li aerospace, khoom siv kho mob, thiab lwm yam.
(3) Organic solderability tiv thaiv zaj duab xis
Organic solderability tiv thaiv zaj duab xis yog txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej txheej Lub thickness ntawm OSP zaj duab xis yog heev nyias, feem ntau ntawm 0.2-0.5 μ m. Nws tsim cov pob tshab organic zaj duab xis rau saum npoo ntawm tooj liab los ntawm cov txheej txheem tshuaj, uas tuaj yeem tiv thaiv tooj liab los ntawm oxidation rau qee lub sijhawm, thiab tuaj yeem decompose sai sai thaum vuam yam tsis muaj kev cuam tshuam cov nyhuv vuam. OSP thev naus laus zis muaj qhov zoo ntawm tus nqi qis, cov txheej txheem yooj yim, thiab kev tiv thaiv ib puag ncig, thiab tsim nyog rau cov khoom siv hluav taws xob uas muaj nqi thiab muaj qee yam yuav tsum tau ua kom muaj zog, xws li cov rooj sib tham hauv cov khoom siv hluav taws xob, cov khoom siv hauv tsev, thiab lwm yam. Txawm li cas los xij, lub peev xwm antioxidant ntawm OSP zaj duab xis yog qhov tsis muaj zog, thiab nws lub sijhawm cia yog txwv. Feem ntau, vuam thiab sib dhos yuav tsum ua kom tiav hauv lub sijhawm luv luv tom qab txheej txheej.
(4) Tshuaj lom neeg nag lossis daus
Cov txheej txheem nyiaj tso nyiaj tso ib txheej nyias ntawm cov nyiaj rau ntawm qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court los ntawm kev hloov pauv cov tshuaj tiv thaiv. Silver txheej muaj qhov zoo tshaj plaws conductivity (thib ob rau kub) thiab solderability, uas tuaj yeem txo cov kab tsis kam thiab txhim kho cov teeb liab kev ua haujlwm. Txawm li cas los xij, cov tshuaj lom neeg ruaj khov ntawm cov txheej nyiaj tsis zoo thiab ua rau oxidation los yog sulfurization, yog li nws yog ib qho tsim nyog yuav tau siv cov tshuaj tiv thaiv kab mob los yog ua kev kho kub kub kom ntev nws txoj sia. Cov txheej txheem no tsim nyog rau siab - zaus circuits (xws li 5G thiab cov khoom siv sib txuas lus satellite), tab sis yuav tsum tau ua tib zoo tsim nyob rau hauv cov av noo / siab sulfur ib puag ncig kom tsis txhob muaj nyiaj migration los yog corrosion.
3, txheej txheem txheej txheej Circuit Court boards
(1) Ua ntej ua
Kev kho ua ntej yog cov kauj ruam yooj yim ntawm Circuit Board txheej txheej, uas yog lub hom phiaj kom tshem tawm cov impurities xws li roj, oxides, plua plav, thiab lwm yam rau ntawm lub rooj tsav xwm hauv Circuit Court, kom ua tiav lub xeev huv thiab qhib tau, thiab muab lub hauv paus zoo rau cov txheej txheem txheej tom ntej. Kev kho ua ntej feem ntau suav nrog cov txheej txheem xws li tshem tawm roj, micro etching, kua qaub ntxuav, thiab ntxuav dej. Cov txheej txheem degreasing siv alkaline lossis cov kuab tshuaj organic kom tshem tawm cov roj stains ntawm qhov chaw ntawm lub rooj tsavxwm; Cov txheej txheem micro etching tshem tawm cov txheej txheem oxide thiab me ntsis burrs ntawm qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court los ntawm cov tshuaj txhuam hniav, ua rau kom qhov roughness, thiab txhim kho cov adhesion ntawm txheej thiab Circuit Court board; Cov txheej txheem pickling yog siv los ntxiv tshem tawm oxides ntawm cov hlau nto thiab kho cov av acidity lossis alkalinity; Cov txheej txheem ntxuav dej yog siv los ntxuav thiab tshem tawm cov tshuaj reagents residual los ntawm cov kauj ruam dhau los.
(2) Txheej
Raws li cov txheej txheem sib txawv, cov txheej txheem txheej txheej tau siv rau txheej txheej. Siv electroless npib tsib xee plating ua piv txwv, tom qab ua tiav qhov kev kho ua ntej -, lub rooj tsav xwm hauv Circuit Court yog immersed nyob rau hauv ib qho electroless npib tsib xee plating tov uas muaj nickel ntsev, txo cov neeg ua hauj lwm, chelate agents, thiab lwm yam khoom. Nyob rau hauv qhov tsim nyog kub (feem ntau 80-90 degree) thiab pH (feem ntau yog 4.5-5.5), npib tsib xee ions raug txo los ntawm tus neeg saib xyuas txo rau ntawm qhov chaw ntawm lub rooj tsavxwm, tso ib txheej nickel. Tom qab npib tsib xee plating tiav lawm, hloov lub rooj tsav xwm hauv Circuit Court mus rau qhov kub plating tov thiab tso ib txheej kub rau saum npoo ntawm npib tsib xee txheej los ntawm kev tawm tsam. Thaum lub sij hawm txheej txheej txheej, nws yog ib qho tsim nyog yuav tsum nruj me ntsis tswj cov txheej txheem tsis xws li cov tshuaj muaj pes tsawg leeg, qhov kub thiab txias, pH tus nqi, thiab lub sij hawm los xyuas kom meej tias cov thickness, uniformity, thiab zoo ntawm txheej raws li qhov yuav tsum tau.
(3) Post processing
Tom qab kev kho mob feem ntau suav nrog cov txheej txheem xws li ntxuav dej, ziab, thiab kuaj. Kev ntxuav dej yog siv los tshem tawm cov txheej txheem txheej txheej thiab cov tshuaj chemical reagents ntawm qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court, tiv thaiv lawv cov kev cuam tshuam tsis zoo ntawm kev ua haujlwm ntawm Circuit Court boards; Kev ziab yog cov txheej txheem ntawm kev tshem tawm cov dej noo los ntawm qhov chaw ntawm lub rooj tsav xwm hauv Circuit Court kom tsis txhob muaj cov khoom seem ntawm qhov ua rau xeb lossis lwm yam teeb meem zoo; Cov txheej txheem ntsuas ntsuas ntsuas qhov zoo ntawm cov txheej txheem los ntawm ntau txoj hauv kev, xws li kev tshuaj xyuas qhov muag, kev ntsuas cov yeeb yaj kiab, ntsuas kev sib tw, kev ntsuas kev ntsuas, thiab lwm yam.