Solder manna bugu bayani ga miniaturized aka gyara 3-2

Don fahimtar ƙalubalen da ƙananan abubuwan da aka rage suka kawo zuwa bugu na manna, dole ne mu fara fahimtar yanki na bugu na stencil (Ratio Area).

Solder manna SMT

Domin solder manna bugu na miniaturized gammaye, da karami da kushin da stencil bude, da mafi wuya shi ne don solder manna rabu da stencil rami bango.Don warware solder manna bugu na miniaturized gammaye, akwai wadannan mafita. don tunani:

  1. Mafi mahimmancin bayani kai tsaye shine don rage kauri na ragar karfe da kuma ƙara yawan yanki na buɗewa. Kamar yadda aka nuna a cikin hoton da ke ƙasa, bayan yin amfani da raga na bakin ciki na karfe, siyar da pads na ƙananan sassa yana da kyau.Idan substrate da aka samar ba shi da manyan abubuwan haɓaka, to wannan shine mafi sauƙi kuma mafi inganci bayani.Amma idan akwai manya-manyan abubuwan da ke kan ma'auni, manyan abubuwan ba za su kasance da ƙarancin siyar da su ba saboda ƙananan adadin tin.Don haka idan yana da babban haɗin gwiwa tare da manyan abubuwan haɗin gwiwa, muna buƙatar wasu mafita da aka jera a ƙasa.

SMT solder manna

  1. Yi amfani da sabuwar fasahar ragar karfe don rage abin da ake buƙata don rabon buɗaɗɗe a cikin stencil.

1) FG (Fine Grain) karfe stencil

FG karfe takardar ya ƙunshi wani nau'i na niobium element, wanda zai iya tace hatsi da kuma rage zafi ji da kuma gaggautsa fushi na karfe, da kuma inganta ƙarfi.bangon rami na Laser-yanke FG karfe takardar ne mafi tsabta da kuma santsi fiye da na talakawa 304 karfe takardar, wanda shi ne mafi m ga rushewa.Matsakaicin yanki na buɗewa na ragar ƙarfe da aka yi da takardar ƙarfe na FG na iya zama ƙasa da 0.65.Idan aka kwatanta da ragar ƙarfe na 304 tare da rabon buɗewa iri ɗaya, za a iya sanya ragan ƙarfe na FG ya ɗan fi kauri fiye da ragar ƙarfe na 304, ta haka zai rage haɗarin ƙarancin tin don manyan abubuwan haɗin gwiwa.

SMT


Lokacin aikawa: Agusta-05-2020

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