Khokahano ea mohala- mokhoa oa ho kenya chip ho PCB
Ho na le li-chips tse 500 ho isa ho tse 1,200 tse hokahaneng le sephaphatha ka seng pele ts'ebetso e fela.E le ho sebelisa li-chips tsena moo ho hlokahalang, sephaphatha se hloka ho khaoloa ka li-chips ka bomong ebe se hokahanngoa le kantle ebe se buletsoe.Ka nako ena, mokhoa oa ho hokahanya lithapo (litsela tsa phetisetso bakeng sa matšoao a motlakase) o bitsoa ho kopanya mohala.
Thepa ea terata: khauta /aluminium / koporo
Lisebelisoa tsa wirebonding li khethoa ka ho hlahloba ka botlalo liparamente tse fapaneng tsa welding le ho li kopanya ka mokhoa o nepahetseng ka ho fetisisa.Mekhahlelo eo ho buuoang ka eona mona e kenyelletsa litaba tse ngata, ho kenyelletsa mofuta oa sehlahisoa sa semiconductor, mofuta oa liphutheloana, boholo ba pad, bophara ba tšepe ea tšepe, mokhoa oa ho cheselletsa, hammoho le matšoao a ts'epahalo joalo ka matla a thata le bolelele ba lead lead.Lisebelisoa tse tloaelehileng tsa tšepe tse etellang pele li kenyelletsa khauta, aluminium le koporo.Har'a tsona, terata ea khauta e sebelisoa haholo bakeng sa ho paka semiconductor.
Gold Wire e na le conductivity e ntle ea motlakase, e tsitsitse lik'hemik'hale, 'me e na le khanyetso e matla ea ho senya.Leha ho le joalo, bothata bo boholo ka ho fetisisa ba terata ea aluminium, e neng e sebelisoa haholo mehleng ea pele, ke hore ho ne ho le bonolo ho senya.Ho feta moo, ho thatafala ha terata ea khauta ho matla, kahoo e ka etsoa hantle hore e be bolo ka har'a tlamahano ea mantlha, 'me e ka etsa hantle semicircular lead loop (Loop, ho tloha ho tlamahano e ka sehloohong ho ea ho ea bobeli) ho kopanya bobeli.sebopeho se bopehileng).
Aluminium Wire e na le bophara bo boholo le sekontiri se seholo ho feta terata ea khauta.Ka hona, le haeba terata ea khauta e hloekileng haholo e sebelisoa ho etsa loop e etellang pele, e ke ke ea robeha, empa terata e hloekileng ea aluminium e tla robeha habonolo, kahoo e tla tsoakoa le silicon kapa magnesium ho etsa motsoako.Mohala oa aluminium o sebelisoa haholo ho paka ka mocheso o phahameng (joalo ka Hermetic) kapa mekhoa ea ultrasonic moo terata ea khauta e ke keng ea sebelisoa.
Le hoja terata ea koporo e le theko e tlaase, ho thatafala ha eona ho phahame haholo.Haeba boima bo phahame haholo, ho ke ke ha e-ba bonolo ho theha sebopeho sa bolo, 'me ho na le mefokolo e mengata ha ho etsoa li-loops tse etellang pele.Ho feta moo, khatello e tlameha ho sebelisoa ho chip pad nakong ea ts'ebetso ea ho kopanya bolo.Haeba boima bo phahame haholo, mapetsong a tla hlaha filiming e ka tlaase ho pad.Ho phaella moo, ho tla ba le ts'ebetso ea "peeling" eo ho eona lesela le kopantsoeng ka thata le phunyehang.Leha ho le joalo, kaha mohala oa tšepe oa chip o entsoe ka koporo, ho na le mokhoa o ntseng o eketseha oa ho sebelisa mohala oa koporo matsatsing ana.Ha e le hantle, e le ho hlōla mefokolo ea terata ea koporo, hangata e kopantsoe le lisebelisoa tse ling tse nyenyane ho etsa motsoako ebe o sebelisoa.