Taw qhia
Hauv kev tsim khoom ntawm PCBA kev ua tiav, ntau yam khoom siv tsis ua haujlwm tsis yog los ntawm cov khoom tsis xws luag lossis cov khoom tsis zoo, tab sis los ntawm cov tshuaj tsis pom. Raws li kev sib koom ua ke ntawm PCB txuas ntxiv mus, qhov sib txawv ntawm lub ncoo tau txo qis los ntawm millimeters mus rau micrometers, ua rau muaj kev sib kis ionic ib qho tsis pom kev tua hluav taws. Rau PCBA hauv kev kho mob hluav taws xob, aerospace, thiab siab - kev ua tau zoo ntawm kev suav, ionic residues yuav tsum tau tswj nyob rau hauv qhov qis heev. Ib qho kev tshaj tawm qhia txog kev pheej hmoo tsis zoo.
Electrochemical Migration
Qhov feem ntau tuag taus ntawm ionic residues nyob rau hauv inducing electrochemical migration. Thaum cov residues zoo li flux activators, tib neeg hws, los yog inorganic ntsev ions los ntawm ib puag ncig nyob rau hauv lub PCBA nto, cov ions no tsim electrolyte txoj kev ntawm ib sab conductors thaum cov khoom yog powered nyob rau hauv ib qho chaw ntub dej.
Tsav los ntawm lub zog hluav taws xob, hlau ions tsiv teb tsaws los ntawm cov anode mus rau cathode, tso rau hauv daim ntawv dendrite-zoo li crystals. Qhov kev loj hlob dendrite no tshwm sim sai heev. Thaum nws txuas lub feeb pad sib nrug los ua ib qho luv luv, Circuit Court raug kev puas tsuaj mus tas li. Rau High-Density Interconnect (HDI) boards, qhov chaw sib nrug ntawm kab yog qhov nqaim heev, txawm tias qhov seem ntawm ionic residue tuaj yeem ua rau qhov kev puas tsuaj loj no.
Deterioration ntawm rwb thaiv tsev Resistance
Tawm tsam qhov keeb kwm yav dhau los ntawm ib txwm muaj - nce cov teeb liab kis tau tus mob ntau zaus, kev huv ntawm PCBA cov chaw ua haujlwm ncaj qha cuam tshuam rau cov teeb liab kev ncaj ncees. Ion residues nthuav tawm cov khoom muaj zog hygroscopic, absorbing ya raws los ntawm huab cua los ua cov txheej txheem conductive uas txo cov nplaim hluav taws xob tiv thaiv.
Qhov kev poob qis hauv kev tiv thaiv tsis yog tsuas yog ua kom cov dej ntws tawm tam sim no, siv lub zog tsis tsim nyog, tab sis kuj tsim cov kab mob parasitic capacitance thiab impedance fluctuations. Rau cov modules rhiab heev rau impedance txuam -xws li sensor interfaces thiab RF circuits - rwb thaiv tsev degradation los ntawm ionic residues ncaj qha ua rau lub teeb liab distortion, nce suab nrov, thiab txawm erroneous logic kev txiav txim. Cov kev ua tsis tiav no feem ntau nthuav tawm tus cwj pwm tsis sib xws, ua haujlwm ib txwm nyob rau hauv qhov chaw qhuav tab sis ua tsis tau ntau zaus hauv qhov chaw ntub dej, ua rau muaj teeb meem loj rau tom qab - muag teeb meem.
Corrosion Risk: Lub cev puas tsuaj rau cov pob qij txha thiab kab
Cov tshuaj nquag hauv ion residues (piv txwv li, chloride thiab bromide ions) pom muaj tshuaj lom neeg ua haujlwm siab. Thaum lub sijhawm ua haujlwm ntev PCBA, cov ions txuas ntxiv tawm tsam cov pob qij txha hlau thiab tooj liab.
Corrosion feem ntau pib ntawm microcracks lossis cov ntsiab lus tsis muaj zog hauv cov txheej tiv thaiv. Cov khoom siv corrosion tsis tsuas yog ua rau lub zog sib koom ua ke ntawm cov khoom siv dag zog- ua rau cov pob txha tawg nyob rau hauv kev vibration- tab sis kuj ua rau muaj kev sib cuag, ua rau muaj kev kub ntxhov hauv cheeb tsam. Nyob rau hauv cov xwm txheej hnyav, ionic corrosion tuaj yeem ua rau tawg ua tiav hauv cov neeg ua haujlwm zoo. Tshwj xeeb tshaj yog nyob rau hauv cov txheej txheem siv tsis muaj - ntxuav flux, teeb tsis raugreflow qhov cubkub profiles yuav tiv thaiv kom txaus decomposition thiab volatilization ntawm flux lub active Cheebtsam. Residual active ions tom qab ntawd nyob rau ntawm lub hauv paus sib koom ua ke, dhau los ua lub sijhawm foob pob.
Zoo kaw-Loop: Ion Contamination Testing and Cleaning Processes
Txhawm rau ua tiav xoom kam rau cov ionic residues, PCBA kev tsim khoom yuav tsum ua raws li cov qauv ntsuas ntsuas. PCBA cov chaw tsim khoom feem ntau ua qhov kev soj ntsuam tas li ntawm cov khoom tiav siv ROSE kuaj lossis ion chromatography (IC).
Rau cov haujlwm uas xav tau kev ntseeg siab, dej- cov txheej txheem ntxuav raws li yuav tsum tau ua. Cov kab tu tshuab ua kom tiav siv cov dej deionized ua ke nrog cov tshuaj ntxuav tshwj xeeb kom huv si tshem tawm cov ions seem thiab cov kab mob organic tom qab muab tso rau. Qhov kev ntxuav no mus dhau qhov yooj yim yaug, sib koom ua ke ntawm ultrasonic agitation, siab -pressure spraying, thiab recirculating pom. Tshaj tawm -cov ntaub ntawv tshuaj ntsuam xyuas cov kab mob sib kis ion ua rau muaj kev pov thawj tseeb ntawm kev ua raws li cov txheej txheem, ua kom txhua lub rooj tsavxwm dhau cov qauv kev tshuaj xyuas nruj.
Cov ntaub ntawv ceevhais txog NeoDen
1) Tsim los ntawm 2010, 200 + cov neeg ua haujlwm, 27000+ Sq.m. Hoobkas.
2) NeoDen Cov Khoom: Cov tshuab sib txawv Series PnP, NeoDen YY1, NeoDen4, NeoDen5, NeoDen K1830, NeoDen9, NeoDen N10P. Reflow Cub IN Series, thiabua tiav SMT Kabsuav nrog txhua yam khoom siv SMT tsim nyog.
3) Ua tiav 10000+ cov neeg siv khoom thoob plaws ntiaj teb.
4) 40+ Cov Neeg Sawv Cev Thoob Ntiaj Teb muaj nyob hauv Asia, Europe, America, Oceania thiab Africa.
5) R&D Center: 3 R&D departments nrog 25+ kws R&D engineers.
6) Sau nrog CE thiab tau txais 70+ patents.
7) 30+ kev tswj xyuas zoo thiab kev txhawb nqa engineers, 15+ kev muag khoom loj thoob ntiaj teb, rau cov neeg siv khoom teb raws sijhawm hauv 8 teev, thiab cov kev daws teeb meem kev tshaj lij hauv 24 teev.