Multilayer ceramic capacitors (MLCCs) yog cov khoom siv tsis zoo hauv cov hluav taws xob hluav taws xob, thiab lawv cov kev ua haujlwm ruaj khov ncaj qha cuam tshuam rau lub sijhawm ntev -cov khoom siv txhim khu kev qha.Txawm hais tias MLCCs lawv tus kheej muaj cov qauv zoo thiab lub neej ntev, tsis muaj kev saib xyuas txhua hnub kom zoo thaum lub sijhawm tsim khoom, khaws cia, thiab kev sib dhos tseem tuaj yeem ua rau kev ua haujlwm tsis zoo lossis kev ua haujlwm tsis zoo rau ib puag ncig. Tsim txoj kev saib xyuas kev tshawb fawb yog qhov tseem ceeb rau kev ua kom cov khoom zoo thiab kev ruaj ntseg.
Thaum khaws cia txhua hnub, tswj qhov kub thiab av noo ntawm ib puag ncig yog qhov tseem ceeb. MLCCs yog cov rhiab heev rau cov dej noo, tshwj xeeb tshaj yog siab -dielectric- hom tsis tu ncua, uas ua rau delamination lossis cov kab nrib pleb hauv lub sijhawm siab - kub soldering tom qab nqus dej noo. Yog li ntawd, qhov chaw cia khoom yuav tsum tswj qhov kub ntawm 20℃thiab 25 degree, nrog rau cov av noo ntawm cov txheeb ze tsis tshaj 40%, thiab siv cov khoom ya raws - pov thawj ntim nrog tsim - nyob rau hauv desiccant thiab humidity phaib. Qhib tab sis tsis siv lub pob los yog lub tais ntim yuav tsum tau muab kaw kom sai li sai tau thiab siv nyob rau hauv lub chaw tsim khoom lub txee lub neej; Cheebtsam dhau lub sijhawm no yuav tsum tau ua ntej- ziab ua ntej siv.
Kev puas tsuaj txhua yam yuav tsum tau tiv thaiv thaum tuav thiab thauj. MLCCs yog qhov me me thiab muaj lub hauv paus nkig ceramic, ua rau lawv raug microcracks los ntawm kev cuam tshuam lossis hnyav, uas tuaj yeem cuam tshuam rau kev ua haujlwm hluav taws xob. Anti- zoo li qub thiab tiv thaiv- cov thawv vibration yuav tsum tau siv rau kev thauj mus los, tsis txhob poob ntawm qhov siab lossis stacking siab dhau. Thaum tuav cov khoom siv manually, yuav tsum tau hnav cov hnab looj tes los yog cov ntiv tes zoo li qub los tiv thaiv electrostatic tawm thiab kis kab mob, thiab kev sib cuag ncaj qha nrog cov cheeb tsam electrode yuav tsum zam kom tsis txhob muaj kev pheej hmoo ntawm oxidation thiab paug.
Thaum lub sij hawm tsim khoom thiab sib dhos, lub hom phiaj ntawm kev saib xyuas yog nyob rau ntawm qhov kub thiab txias thaum lub sij hawm soldering thiab reworking. MLCCs rhiab heev rau thermal shock; Cov cua kub ceev los yog cua txias tuaj yeem ua kom muaj kev ntxhov siab thermal hauv sab hauv, ua rau cov txheej txheem tawg. Ib qho reflow soldering profile uas ua tau raws li cov ntsiab lus ntawm cov khoom siv hluav taws xob yuav tsum tau xaiv, tsis txhob muaj qhov kub thiab txias ntau dhau los yog lub sijhawm nyob ntev. Thaum siv tes soldering, kub - tswj cov hlau yuav tsum tau siv, txo lub sij hawm cua sov ntawm ib sab, thiab cov solder sib koom ua ke morphology yuav tsum tau kuaj xyuas tom qab rov ua haujlwm los tiv thaiv kev puas tsuaj los ntawm kev ntxhov siab.
Kev tu thiab kev tiv thaiv kuj tseem ceeb ntawm kev saib xyuas txhua hnub. Yog hais tias flux residue tsis raug tshem tawm sai, nws tuaj yeem corrode cov electrodes los yog nqus dej noo. Tsawg- residue, ceev- cov tshuaj ntxuav cov evaporating yuav tsum tau siv, ua raws li kev ziab kom huv. Rau cov khoom tiav ua haujlwm nyob rau hauv siab - av noo los yog plua plav ib puag ncig, cov dej noo- pov thawj txheej tuaj yeem siv rau thaj chaw tseem ceeb ntawm PCB los txhim kho MLCC qhov kev tiv thaiv ib puag ncig corrosion.
Kev tshuaj xyuas tsis tu ncua thiab kev ntsuas tus mob pab txheeb xyuas cov teeb meem tshwm sim thaum ntxov. Rau cov khoom siv hauv kev ua haujlwm ntev - lub sijhawm ua haujlwm, cov cuab yeej tshwj xeeb tuaj yeem siv tau thaum lub sij hawm tu lub voj voog kom coj mus kuaj thiab ntsuas qhov muaj peev xwm thiab sib npaug sib npaug ntawm MLCCs ntawm qhov chaw tseem ceeb. Sib piv cov nqi no rau lub Hoobkas specifications pab txiav txim seb puas muaj kev laus lossis kev puas tsuaj zais, thiab tso cai rau kev tiv thaiv kev hloov pauv yog tias tsim nyog.
Hauv cov ntsiab lus, kev saib xyuas niaj hnub ntawm multilayer ceramic capacitors encompasses xws li kev tswj ib puag ncig, kev tiv thaiv kev puas tsuaj, kev tswj cov cua sov, kev tu thiab kev tiv thaiv, thiab kev sim tsis tu ncua. Los ntawm kev siv cov kev saib xyuas nruj me ntsis, qhov kev pheej hmoo ntawm kev ua tsis tiav los ntawm ib puag ncig thiab kev ua haujlwm tsis raug tuaj yeem raug txo kom zoo, kom ntseeg tau tias MLCCs txuas ntxiv ua haujlwm ruaj khov thiab ntseeg tau hauv ntau lub tshuab hluav taws xob.
