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Sei kuomesa bvunzo PCBA?

Kuti ienderane nekuwedzera kuri kuita kutarisisa kwepasirese kuchengetedzwa kwezvakatipoteredza, PCBA yakachinja kubva mutobvu kuenda kumutungamiri wemahara, uye yakashandisa zvinhu zvitsva zvelaminate, shanduko idzi dzinozokonzera PCB zvigadzirwa zvemagetsi solder majoini ekuita shanduko.Nekuti chikamu che solder majoini anonzwa zvakanyanya kune kutadza kutadza, zvakakosha kuti unzwisise strain maitiro ePCB zvemagetsi pasi pemamiriro akaomarara kuburikidza nekuomerwa kuyedzwa.

Kune akasiyana solder alloys, mapakeji emhando, kurapwa kwepamusoro kana laminate zvinhu, kuomarara kwakanyanya kunogona kutungamira kune dzakasiyana nzira dzekutadza.Kutadza kunosanganisira kuputika kwebhora rekutengesa, kukuvadzwa kwewaya, kutadza kusungirirwa kwelaminate (pad skewing) kana kutadza kubatana (pad pitting), uye kupaza substrate kutsemuka (ona Mufananidzo 1-1).Kushandiswa kwekuyera kuyerwa kudzora kuchinjika kwemabhodhi akadhindwa kwakaratidza kubatsira kune indasitiri yemagetsi uye iri kuwana kugamuchirwa senzira yekuziva nekuvandudza mashandiro ekugadzira.

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Kuongororwa kweStrain kunopa ongororo yechinangwa cheyero yekuomerwa uye chiyero chekuomerwa icho SMT mapakeji anoiswa mukati mePCBA gungano, kuyedzwa, uye kushanda, ichipa yakawandisa nzira yePCB warpage kuyerwa uye njodzi chiyero chekuongorora.

Chinangwa chekuyera kuyerwa ndechekutsanangura maitiro ematanho ese egungano anosanganisira michina yekutakura.


Nguva yekutumira: Kubvumbi-19-2024