Kodi pali kusiyana kotani pakati pa kutentha kwa solder, kumiza siliva ndi malata omiza mu PCB pamwamba pa mankhwala?

1, Kutentha kwa solder

Gulu la siliva limatchedwa tin hot air solder leveling board.Kupopera mankhwala wosanjikiza malata kunja wosanjikiza dera mkuwa ndi conductive kuti kuwotcherera.Koma sizingapereke kudalirika kwa nthawi yayitali ngati golide.Mukaigwiritsa ntchito motalika kwambiri, imakhala yosavuta kuti oxidize ndi dzimbiri, zomwe zimapangitsa kuti musagwirizane.

Ubwino:Mtengo wotsika, ntchito yabwino yowotcherera.

Zoyipa:Kutentha kwapamtunda kwa bolodi yowotchera yotentha ndi yocheperako, yomwe siyenera kuyika zikhomo zokhala ndi mpata wawung'ono ndi zigawo zazing'ono kwambiri.Mikanda ya malata ndiyosavuta kupangaPCB processing, zomwe zimakhala zosavuta kuchititsa kuti dera lalifupi likhale laling'ono la pini.Mukagwiritsidwa ntchito munjira ziwiri za SMT, ndizosavuta kupopera malata kusungunuka, zomwe zimapangitsa mikanda ya malata kapena madontho ozungulira, zomwe zimapangitsa kuti pakhale kusiyana kwakukulu komanso kusokoneza zovuta zowotcherera.

2, Siliva womiza

Njira yomiza siliva ndiyosavuta komanso yachangu.Siliva womiza ndi njira yosamuka, yomwe imakhala pafupifupi siliva wa 5 ~ 15 μ Mu, pafupifupi 0.1 ~ 0.4 μ m) Nthawi zina njira yomiza siliva imakhalanso ndi zinthu zina zakuthupi, makamaka kuteteza dzimbiri la siliva ndikuchotsa vutoli. Ngakhale atakumana ndi kutentha, chinyezi ndi kuipitsidwa, amatha kupereka zinthu zabwino zamagetsi ndikukhalabe bwino, koma amataya kuwala.

Ubwino:Silver impregnated kuwotcherera pamwamba ali weldability wabwino ndi coplanarity.Nthawi yomweyo, ilibe zopinga zoyendetsa ngati OSP, koma mphamvu yake sikhala yabwino ngati golide ikagwiritsidwa ntchito ngati malo olumikizirana.

Zoyipa:Ikakhudzidwa ndi chilengedwe chonyowa, siliva imatulutsa kusamuka kwa ma elekitironi pansi pamagetsi.Kuonjezera zigawo za organic ku siliva kungachepetse vuto la kusamuka kwa ma elekitironi.

3, Kumiza malata

Kumiza malata kumatanthauza kuti solder wicking.M'mbuyomu, PCB inali chizolowezi cha ndevu za malata pambuyo pa ndondomeko ya malata a Immersion.Ndevu za malata ndi kusuntha kwa malata panthawi yowotcherera kumachepetsa kudalirika.Pambuyo pake, zowonjezera zowonjezera zimawonjezeredwa ku njira yomiza tini, kotero kuti kapangidwe ka tini tating'ono tating'onoting'ono tating'onoting'ono, tomwe timagonjetsa mavuto am'mbuyomu, komanso kukhala ndi kukhazikika kwabwino kwa kutentha ndi kuwotcherera.

Zoyipa:Chofooka chachikulu cha kumizidwa ndi malata ndi moyo wake waufupi wautumiki.Makamaka akasungidwa kumalo otentha kwambiri komanso chinyezi chambiri, zosakaniza pakati pa Cu/Sn zitsulo zimapitilira kukula mpaka zitataya kusungunuka.Choncho, mbale za malata sizingasungidwe motalika kwambiri.

Tili ndi chidaliro kukupatsirani kuphatikiza kwabwino kwambiriturnkey PCB msonkhano utumiki, khalidwe, mtengo ndi nthawi yobweretsera mu dongosolo lanu la Small batch voliyumu ya PCB ndi Mid batch Volume PCB dongosolo la msonkhano.

Ngati mukuyang'ana wopanga msonkhano wabwino wa PCB, chonde tumizani mafayilo anu a BOM ndi mafayilo a PCBsales@pcbfuture.com.Mafayilo anu onse ndi achinsinsi kwambiri.Tikutumizirani mawu olondola okhala ndi nthawi yotsogolera mu maola 48.