Yog vim li cas cov pob qij txha tsis ua haujlwm hauv PCBA
Jun 07, 2022
Nrog rau kev txhim kho ntawm cov khoom siv hluav taws xob me me thiab qhov tseeb ntawm cov khoom siv hluav taws xob, PCBA kev ua haujlwm thiab kev sib dhos ceev tau txais los ntawm cov khoom siv chips tau nce siab thiab siab dua, cov pob qij txha hauv lub rooj tsavxwm tau txais me dua thiab me dua, thiab cov khoom siv hluav taws xob, hluav taws xob thiab thermal loads. lawv nqa Nws tau hnyav dua thiab hnyav dua, thiab cov kev xav tau rau kev ruaj ntseg kuj nce ntxiv. Txawm li cas los xij, qhov teeb meem ntawm PCBA solder sib koom ua haujlwm tsis ua haujlwm kuj tseem yuav ntsib hauv cov txheej txheem ua tiav. Nws yog ib qho tsim nyog yuav tsum txheeb xyuas thiab tshawb xyuas qhov laj thawj kom tsis txhob rov tshwm sim ntawm kev sib koom ua ke tsis ua haujlwm. Cia peb saib nrog tus editor hnub no!
Lub ntsiab yog vim li cas rau qhov tsis ua hauj lwm ntawm PCBA ua solder pob qij txha:
1. Cov khoom tsis zoo ua rau: plating, muaj kuab paug, oxidation, coplanarity.
2. Cov PCB tsis zoo: plating, muaj kuab paug, oxidation, warpage.
3. Solder zoo tsis xws luag: muaj pes tsawg leeg, impurity, thiab oxidation tsis raws li tus qauv.
4. Flux zoo tsis xws luag: tsawg solderability, siab corrosion, tsawg SIR.
5. Qhov tsis xws luag hauv cov txheej txheem parameter tswj: tsim, tswj, thiab khoom siv.
6. Qhov tsis xws luag ntawm lwm cov khoom siv pabcuam: cov nplaum, cov tshuaj ntxuav.
Yuav ua li cas kom muaj kev ruaj ntseg ntawm PCBA solder pob qij txha:
Rau qhov kev sim ruaj khov ntawm PCBA cov pob qij txha, suav nrog kev sim kev ruaj ntseg thiab kev soj ntsuam, nws lub hom phiaj yog ntsuas thiab ntsuas qhov kev ruaj ntseg ntawm PCBA cov khoom siv hluav taws xob sib txuas ntawm ib sab, thiab muab cov ntsuas kev ruaj ntseg ntawm tag nrho lub tshuab.
Ntawm qhov tod tes, thaum ua PCBA, nws yog ib qho tsim nyog los txhim kho kev ruaj ntseg ntawm cov pob qij txha. Qhov no yuav tsum muaj kev soj ntsuam ntawm cov khoom ua tsis tau zoo, nrhiav kev ua haujlwm tsis ua haujlwm, thiab txheeb xyuas qhov ua rau tsis ua haujlwm. Lub hom phiaj yog los hloov kho thiab txhim kho cov txheej txheem tsim, cov txheej txheem tsis zoo, txheej txheem vuam, thiab txhim kho cov txiaj ntsig ntawm PCBA ua. Hom kev ua tsis tiav ntawm PCBA cov pob qij txha yog lub hauv paus rau kev kwv yees nws lub neej voj voog thiab tsim nws cov qauv lej.