Kulumikiza waya- njira yoyika chip pa PCB

Pali tchipisi 500 mpaka 1,200 zolumikizidwa pawotchi iliyonse isanathe. Kuti mugwiritse ntchito tchipisi tating'ono ting'ono ngati pakufunika, chophikacho chiyenera kudulidwa kukhala tchipisi tating'ono ting'ono ndikulumikizidwa kunja ndikuyatsa. Panthawiyi, njira yolumikizira mawaya (njira zotumizira zizindikiro zamagetsi) zimatchedwa wire bonding.

Zida za waya: golide / aluminiyamu / mkuwa

Zida zama waya zimatsimikiziridwa ndikuganizira mozama magawo osiyanasiyana owotcherera ndikuphatikiza njira yoyenera kwambiri. Magawo omwe akutchulidwa pano akuphatikizapo zinthu zambiri, kuphatikizapo mtundu wa mankhwala a semiconductor, mtundu wa ma CD, kukula kwa pad, chitsulo chowongolera, njira yowotcherera, komanso zizindikiro zodalirika monga mphamvu zamakokedwe ndi kutalika kwa kutsogolo kwachitsulo. Zida zotsogola zachitsulo zimaphatikizapo golide, aluminiyamu ndi mkuwa. Mwa iwo, waya wagolide amagwiritsidwa ntchito kwambiri pakuyika semiconductor.

Gold Wire ili ndi mphamvu yamagetsi yabwino, imakhala yosasunthika pamankhwala, ndipo imakhala ndi mphamvu zolimbana ndi dzimbiri. Komabe, choyipa chachikulu cha waya wa aluminiyamu, womwe unkagwiritsidwa ntchito kwambiri m'masiku oyambilira, unali wosavuta kuwononga. Komanso, kuuma kwa waya wa golidi kumakhala kolimba, kotero kumatha kupangidwa bwino kukhala mpira mu mgwirizano woyamba, ndipo ukhoza kupanga bwino semicircular lead loop (Loop, kuchokera ku pulayimale kulumikiza kwachiwiri) mu mgwirizano wachiwiri. mawonekedwe opangidwa).

Waya wa Aluminium uli ndi mainchesi okulirapo komanso phula lalikulu kuposa waya wagolide. Choncho, ngakhale waya wa golide woyenga kwambiri atagwiritsidwa ntchito popanga chipika chotsogolera, sichidzathyoka, koma waya woyera wa aluminiyamu amathyoka mosavuta, choncho amasakanizidwa ndi silicon kapena magnesium kuti apange alloy. Waya wa aluminiyamu amagwiritsidwa ntchito makamaka pakuyika kutentha kwambiri (monga Hermetic) kapena njira za ultrasonic komwe waya wagolide sungagwiritsidwe ntchito.

Ngakhale waya wamkuwa ndi wotsika mtengo, kuuma kwake ndikwambiri. Ngati kuuma kuli kwakukulu, sikudzakhala kosavuta kupanga mawonekedwe a mpira, ndipo pali zolepheretsa zambiri popanga malupu otsogolera. Komanso, kukakamiza kuyenera kugwiritsidwa ntchito pa chip pad panthawi yolumikizira mpira. Ngati kuuma kuli kwakukulu, ming'alu idzawonekera mufilimuyo pansi pa pedi. Kuonjezera apo, padzakhala chodabwitsa cha "peeling" chomwe chiwombankhanga cholumikizidwa mwamphamvu chimachoka. Komabe, popeza mawaya achitsulo a chip amapangidwa ndi mkuwa, pali njira yowonjezereka yogwiritsira ntchito waya wamkuwa masiku ano. Zoonadi, pofuna kuthana ndi zofooka za waya wamkuwa, nthawi zambiri zimasakanizidwa ndi zinthu zina zazing'ono kuti zipange alloy kenako zimagwiritsidwa ntchito.