Mitundu ya Zitsulo za Zigawo Zamagetsi ndi Njira Zawo Zopangira
Zipangizo zamagetsi zamakono sizimangotanthauza kapangidwe ka dera ndi luso la chip, komanso kusankha chitsulo choyenera cha gawo lililonse. Zitsulo zimagwira ntchito yofunika kwambiri monga ma conductor amagetsi, zipangizo zolumikizirana, zokutira zotsutsana ndi dzimbiri, ma lead a gawo, zida zosungunula, komanso zipangizo zomangira zotenthetsera ndi zotchingira zamagetsi. Mtundu uliwonse wa chitsulo umakhala ndi makhalidwe osiyanasiyana—kuyendetsa magetsi, kukana dzimbiri, mphamvu ya makina, malo osungunuka, komanso kusavuta kupanga—kotero kusankhako kuyenera kusinthidwa kuti kugwirizane ndi zosowa za ntchito. Nkhaniyi ikukambirana mitundu ya zitsulo zomwe zimagwiritsidwa ntchito kwambiri muzipangizo zamagetsi ndi njira zawo zopangira m'makampani.
1. Mkuwa (Mkuwa/Cu): Msana wa Oyendetsa
Mkuwa ndi chitsulo chodziwika kwambiri mu zamagetsi chifukwa cha mphamvu yake yoyendetsa magetsi, kusinthasintha kwake, komanso mtengo wake poyerekeza ndi zitsulo zamtengo wapatali. Mkuwa umagwiritsidwa ntchito mu ma printed circuit board (PCBs), ma cable, ma motor/transformer windings, mabasi, ndi zolumikizira.
Njira zopangira:
– Kuyeretsa ndi kuyeretsa magetsi: Mkuwa umayengedwa kuti ukhale woyera kwambiri (nthawi zambiri >99,9%). Pa ntchito zamagetsi, kuyera ndikofunikira kuti pakhale kukana kochepa.
– Kuzungulira ndi kulumikiza: Mkuwa umakulungidwa m'mapepala oonda (ma foil) a ma PCB, kenako umakulungidwa (kutenthedwa ndi kuzizira molamulidwa) kuti ukhale wofewa komanso wosavuta kuukonza.
– Kupaka mkuwa ndi ma elekitironi: Mu njira yopangira ma PCB, njira za mkuwa zimatha "kukula" kudzera mu electroplating m'malo ena kuti ziwonjezere makulidwe a njira.
2. Aluminiyamu (Al): Yopepuka, Yotsika mtengo, komanso Yodalirika pa kutentha
Aluminiyamu imagwiritsidwa ntchito kwambiri popangira zotenthetsera, ma casing, ma device frames, ndi ma electrolytic capacitors (monga anode foil). Ngakhale kuti mphamvu yake yamagetsi ndi yotsika kuposa ya mkuwa, aluminiyamu imachita bwino kwambiri polemera kwake, kukana dzimbiri (chifukwa cha kapangidwe kake ka oxide), komanso mphamvu yabwino ya kutentha.
Njira zopangira:
– Kuponya ndi kutulutsa ma die: Ma heat sinks nthawi zambiri amapangidwa ndi kutulutsa ma die (kukankhira aluminiyamu kudzera mu die) kuti apange zipsepse zoziziritsira, kapena kuponya ma die kwa mawonekedwe ovuta.
– Kupaka mafuta: Njira yamagetsi yomwe imapanga gawo lolimba komanso lokhazikika la oxide. Kupaka mafuta kumawonjezera kukana dzimbiri ndipo kumatha kusintha mawonekedwe a kutentha (kutengera kumalizidwa kwake).
– Kujambula (kwa capacitor foil): Pamwamba pa aluminiyamu pamakhala kujambulidwa kuti pakhale malo ochulukirapo, motero pamakhala kujambulidwa pang'ono.
3. Tin (Sn) ndi Solder Alloy: Zolumikizira Pakati pa Zigawo
Tin ndiye chinthu chachikulu chomwe chimagwiritsidwa ntchito mu solder. Solder imalumikiza zigawo ndi PCB pomwe ikuwonetsetsa kuti magetsi ndi mphamvu ya makina zikugwira ntchito. Masiku ano, mafakitale ambiri amagwiritsa ntchito solder zopanda lead monga SAC (Tin-Silver-Copper), monga Sn-Ag-Cu.
Njira zopangira:
– Kusakaniza (kupanga ma alloy): Tin imasakanizidwa ndi siliva ndi mkuwa m'zinthu zina kuti ipeze malo oyenera osungunula ndi mphamvu yolumikizirana.
– Kusokeranso: Phala la solder limasindikizidwa (kusindikiza stencil) pa PCB pad, kenako limatenthedwa mu uvuni wosokeranso kuti solder isungunuke ndikupanga kulumikizana.
– Kusokera kwa mafunde: Pa zinthu zodutsa m'bowo, bolodi limadutsa pa mafunde a solder yosungunuka kuti miyendo ya zinthuzo isokokeredwe.
4. Golide (Au): Kulumikizana Kwapamwamba Kwambiri Kotsutsana ndi Kutupa
Golide amagwiritsidwa ntchito mu zolumikizira, ma contact pad, ma bonding ways, ndi zophimba za contact point chifukwa cha kukana kwake okosijeni komanso mphamvu yake yoyendetsa bwino. Golide amatsimikizira kulumikizana kokhazikika ngakhale akagwiritsidwa ntchito mobwerezabwereza komanso m'malo ozizira.
Njira zopangira:
– Kupaka golide: Golide wochepa thupi amaikidwa pamwamba pa cholumikizira kapena pad. Kukhuthala kwake kumakonzedwa bwino kuti kusamawonongeke popanda kuwononga ndalama zambiri.
– Kulumikiza mawaya: Mu makampani opanga ma semiconductor, waya wagolide (kapena njira zina) amagwiritsidwa ntchito kulumikiza die ku leadframe pogwiritsa ntchito njira yolumikizira mawaya a thermosonic/ultrasonic.
– ENIG pa PCB: Chomaliza chodziwika bwino pa PCB ndi ENIG (Electroless Nickel Immersion Gold): nickel imakutidwa popanda magetsi, kenako golide wochepa ngati wosanjikiza wakunja.
5. Siliva (Ag): Kuyendetsa bwino kwambiri kwa njira zinazake
Siliva ndi mphamvu yamagetsi yapamwamba kwambiri kuposa zitsulo wamba, zomwe zimapangitsa kuti igwiritsidwe ntchito pazinthu zapadera monga ma conductors ogwira ntchito kwambiri, ma conductor phala, mabatani, ndi zolumikizira zina. Vuto ndilakuti siliva amatha kuipitsidwa chifukwa cha momwe amachitira ndi sulfure.
Njira zopangira:
– Siliva phala (kusindikiza pazenera): Mu ma circuits osinthasintha kapena nembanemba, kapangidwe ka ma conductors asiliva kamasindikizidwa pogwiritsa ntchito njira yapadera yosindikizira pazenera, kenako nkuumitsa/kuchiritsidwa.
– Kupaka siliva: Kupaka electroplating kumachitika pa zolumikizira zina kuti muchepetse kukana kwa kukhudzana, makamaka pakakhala mafunde amphamvu.
6. Nickel (Ni): Chophimba Chotchinga ndi Kukana Kuvala
Nickel nthawi zambiri imagwiritsidwa ntchito ngati chotchinga kuti chitsulo chisafalikire komanso kuti zolumikizira zisawonongeke. Pomaliza PCB, nickel imagwiritsidwa ntchito isanayambe golide (monga ENIG) chifukwa imapereka mphamvu ndi kukhazikika pa pad.
Njira zopangira:
– Kuphimba nickel popanda magetsi: Kumapanga gawo lofanana la nickel popanda magetsi, loyenera kugwiritsa ntchito ma geometries ovuta.
– Kupaka ma elekitironi ndi nikeli: Kumagwiritsidwa ntchito popanga zokutira zomwe zimafuna kuwongolera makulidwe ake.
7. Palladium (Pd) ndi Platinum (Pt): Yokhazikika kuti igwirizane ndi kuphimba
Palladium imagwiritsidwa ntchito m'malumikizidwe ena komanso m'malo mwa golide kuti iwonjezere kukana kuwonongeka pamtengo wotsika nthawi zina. Platinamu sigwiritsidwa ntchito kawirikawiri chifukwa cha mtengo wake wokwera, koma kukana kwake mankhwala ambiri kumapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'ma sensor ena.
Njira zopangira:
– Chophimba chosankha: Pd nthawi zambiri imakutidwa mosankha m'malo olumikizirana kuti igwiritse ntchito bwino ndalama zokha.
– Kupanga ma electrode a sensor: Pt ikhoza kupangidwa kukhala ma electrode owonda kudzera mu lithographic deposition ndi patterning (makamaka mu masensa ndi zida zazing'ono).
8. Chitsulo, Chitsulo, ndi Zopangira Kapangidwe ka Zinthu: Mphamvu ndi Kuteteza Makina
Zitsulo ndi zitsulo zosungunula zimagwiritsidwa ntchito pa mafelemu, zomangira, chassis, ndi zitseko zomwe zimafuna mphamvu. Kuphatikiza apo, zitsulo zina za pepala zingagwiritsidwe ntchito ngati zotchingira za EMI.
Njira zopangira:
– Kuponda ndi kupindika: Mapepala achitsulo amadulidwa (amaikidwa sitampu) ndikupindika kuti apange mabulaketi, zophimba, ndi mafelemu.
– Chophimba choletsa dzimbiri: Chitsulo nthawi zambiri chimakutidwa ndi zinc (galvanizing), nickel, kapena utoto/ufa kuti chikhale cholimba ndi dzimbiri.
– Kupanga chitini cha chishango: Zishango za EMI pa ma PCB nthawi zambiri zimapangidwa ndi mapepala achitsulo opyapyala omwe amasindikizidwa, kenako amamatidwa ndi solder kapena clips.
9. Chitsulo cha Leadframe: Ma Alloys a Copper ndi Copper a IC Packaging
Mu mapaketi ena a IC, mafelemu a lead amapangidwa ndi mkuwa kapena zitsulo zake chifukwa cha mphamvu yawo yabwino komanso kupangika mosavuta.
Njira zopangira:
- Kusindikiza pang'onopang'ono: Chitsulo chimakonzedwa pang'onopang'ono mpaka kufa kuti chipange miyendo ya IC.
- Kujambula kwa mankhwala: Njira ina yopangira tsatanetsatane wochepa, pogwiritsa ntchito mankhwala "kujambula" mawonekedwe a leadframe.
– Kupaka (Sn, Ni, Ag, Au): Chingwe cha lead chimakutidwa kuti chiwongolere kusungunuka komanso kukana dzimbiri.
10. Zofunikira pakusankha zitsulo mu zamagetsi
Kusankha zitsulo sikungokhudza mphamvu ya magetsi yokha. Opanga mapulani amaganiziranso izi:
1. Kuyenda kwa magetsi ndi kukana kukhudzana ndi magetsi (monga mkuwa, siliva, golide).
2. Kukana kwa okosijeni/kudzikundikira (golide ndi wapamwamba kwambiri, nikeli ndi chotchinga).
3. Mphamvu ya makina ndi kuwonongeka kwake (chitsulo, nikeli, palladium).
4. Kugwira ntchito kwa kutentha (aluminiyamu ya sinki yotenthetsera).
5. Kugwirizana kwa njira zopangira zinthu monga kusungunula zinthu, kuyika ma plating, ndi kupondaponda.
6. Mtengo ndi kupezeka kwa zipangizo komanso kukhazikika kwa unyolo woperekera zinthu.
Kutseka
Zitsulo ndi "maziko enieni" omwe amalola kuti zizindikiro zamagetsi ziziyenda, kutentha kuzimiririka, ndi kulumikizana kukhalepobe muzipangizo zamagetsi. Mkuwa umalamulira njira yoyendetsera magetsi, aluminiyamu imachita bwino kwambiri pakuwongolera kutentha, tini ndi zitsulo zake zimagwirizira zigawo pamodzi kudzera mu soldering, pomwe golide, siliva, nickel, ndi palladium zimaonetsetsa kuti zinthuzo zikugwirizana bwino komanso kuti zisawonongeke. Kumbuyo kwa zitsulozi, njira zopangira monga kupukuta, kuponda, kutulutsa, kupukuta, ndi kuyikanso soldering ndizofunikira kwambiri pakupanga zinthu zamagetsi bwino kwambiri. Pomvetsetsa mawonekedwe a zitsulo ndi njira zawo zopangira, titha kupanga zida zodalirika, zogwira ntchito bwino, komanso zolimba.
Ngati mukufuna, nditha kusintha nkhaniyi kuti igwirizane ndi nkhani inayake—monga kuyang'ana kwambiri pa PCB, cholumikizira, kapena makampani osonkhanitsira ma SMT—ndipo ndikuwonjezera zolemba ndi zinthu zina zaukadaulo.
