Izinsizakalo Zokwenza i-PCB Yobumba Zigxile Ekhwalithini Yebhodi

Izinsizakalo zokwenziwa kwe-PCB ye-Ceramic zilandela inqubo ehluke ngokuphelele ekukhiqizweni kwebhodi le-FR4. Ngenkathi ukukhiqizwa kwe-FR4 kuhilela ukufaka i-foil yethusi kuma-substrate e-resin-glass asetshenziswe ngaphambilini, ukukhiqizwa kwe-ceramic kuqala ngama-substrate e-ceramic aluhlaza adinga ukushiswa emazingeni okushisa angaphezu kuka-1,500°C, kulandelwe izinqubo zokwenza insimbi ezibopha izendlalelo eziqhubayo ebusweni be-ceramic ngezindlela zamakhemikhali noma zemishini.

Lo mehluko usho ukuthi akuzona zonke izimboni ze-PCB ezingakhiqiza amabhodi e-ceramic — noma ngabe ziwafaka kuwebhusayithi yazo. Ukuqonda ukuthi yini ehilelekile enkambisweni yokukhiqiza kusiza onjiniyela ukuthi bacacise izidingo zabo ngendlela efanele futhi bahlole ukuthi umhlinzeki wokukhiqiza we-PCB we-ceramic unekhono langempela lokuletha.

1. Yini Eyenza Ukukhiqizwa kwe-PCB Ye-Ceramic Kuhluke Ekukhiqizweni Kwe-PCB Okujwayelekile

1.1 Izinga Lokushisa Lenqubo

Ama-PCB e-FR4 acutshungulwa ngaphansi kuka-200°C ukuze afakwe i-lamination kanye no-260°C ukuze afakwe i-soldering kabusha. Ama-substrate e-ceramic, ngokuphambene, ashiswa ku-850–1,700°C kuye ngokuthi izinto zisetshenziswa kanjani kanye nohlobo lwenqubo. Lokhu kudinga izitofu ezikhethekile zokushisa okuphezulu ezinokulawula okunembile komkhathi — imishini izimboni ze-PCB ezijwayelekile ezingenayo.

1.2 Ukuziphatha Okubalulekile

I-Ceramic iyaphuka. Ngokungafani ne-FR4, engabholwa, ihanjiswe, futhi iphathwe ngezinqubo ezijwayelekile zemishini, ama-substrate e-ceramic adinga ukubholwa nge-laser ukuze kusetshenziswe ama-via, ukubhala ngedayimane noma ukusika nge-laser ukuze kusetshenziswe i-singulation, kanye nokuphathwa ngokucophelela kulo lonke ukukhiqizwa ukuze kuvinjelwe ukuqhekeka. Iphaneli elilodwa elingaphathwanga kahle lingasusa yonke indawo yokukhiqiza.

1.3 I-Metallization Chemistry

Ithusi alinamatheli ngokwemvelo ku-ceramic. Ukudala ungqimba lomqhubi oluthembekile kudinga izinqubo ezikhethekile zokubopha — i-DBC (i-Direct Bonded Copper), ukuphrinta kwesikrini sefilimu ebanzi, ukubhoboza kwefilimu encane, noma i-AMB (i-Active Metal Brazing) — ngayinye inemishini ehlukene, izinto zokwakha, kanye nemingcele yenqubo. Indlela yokwenza insimbi inquma isixazululo sokulandelela esingafinyeleleka, amandla okuthwala ugesi, kanye nokuthembeka kwesikhathi eside kwebhodi eliqediwe.

2. Inqubo Yokukhiqiza: Isinyathelo Ngesinyathelo

Ukubuka konke kwe-2.1

Uchungechunge olujwayelekile lokwenziwa kwe-PCB ye-ceramic luhlanganisa:

1. Ukulungiswa kwe-substrate: Ukuhlolwa okuzayo kwezimbobo zobumba ezingavuthiwe (ubumsulwa, ubukhulu, ukujiya kobuso), kulandelwe ukuhlanza nokuhlanganisa iphrofayili yobuso edingekayo
2. Ukwenziwa kwensimbi: Ukusebenzisa ungqimba oluqhubayo ngokusebenzisa i-DBC bonding, ukuphrinta nokudubula ngefilimu ejiyile, ukufakwa kwefilimu ejiyile, noma inqubo ye-AMB
3. Ukuhlela amaphethini wesekethe: I-Photolithography kanye nokuqopha ukuze kuchazwe i-trace geometry kusuka ebusweni obuhlanganisiwe
4. Ngokwakheka: Ukubhoboza nge-laser ngokusebenzisa i-substrate ye-ceramic; ngokugcwalisa nge-conductive paste noma i-plating
5. Ukuqedwa kobuso: I-ENIG, igolide eliqinile, i-Ni/Ag, noma i-OSP — kukhethwe ngokusekelwe endleleni yokuhlanganisa kanye nokusetshenziswa
6. Ukulinganisa: Ukubhala nge-laser, ukusika idayimane, noma ukuhlukanisa amaphuzu ukuze kuhlukaniswe amabhodi ngamanye nephaneli yokukhiqiza
7. Ukuhlola nokuhlola: Ukuqinisekiswa kobukhulu, ukuhlolwa kokuqhubeka/ukuhlukaniswa kukagesi, ukuhlolwa okubonakalayo, kanye nokuhlolwa kokuthembeka njengoba kuchaziwe

2.2 Izinguquko Zenqubo Ngokwendlela Yokwenza Insimbi

Ukuze uthole ukubuka okujulile kokwenziwa kwe-DBC ethile, bheka umhlahlandlela wethu wokukhiqiza i-DBC substrate.

3. Izinketho zezinto ezibonakalayo nokuthi zithinta kanjani umzila wenqubo

Izinto ze-ceramic substrate azinqumi nje kuphela ukusebenza kwebhodi lokushisa kanye nogesi, kodwa futhi nokuthi yiziphi izinqubo zokukhiqiza ezingasetshenziswa:

Ukuze uthole ukuqhathanisa okuningiliziwe kwezinto zokwakha kanye nesiqondiso sokukhetha, umhlahlandlela wethu wokukhiqiza we-alumina PCB uhlanganisa inketho ye-ceramic substrate esetshenziswa kakhulu.

4. Amapharamitha Enqubo Ebucayi Anquma Ikhwalithi Yebhodi

4.1 Ukulawula Ukushisa Kokucwenga/Ukubopha

Ukubopha kwe-DBC kudinga ukufana kwezinga lokushisa lesithando ngaphakathi kuka-±3–5°C kulo lonke indawo eshisayo. Ngisho nama-gradient amancane okushisa abangela amandla angalingani e-copper-ceramic bond - aqinile phakathi nendawo, abuthakathaka emaphethelweni - okuholela ekwehlulekeni kokuhlukanisa ngaphansi kokujikeleza kokushisa.

4.2 Ukulawulwa Komoya

Kokubili ukubopha kwe-DBC kanye nokudubula kwefilimu ejiyile kudinga ukuphathwa okunembile komkhathi. Ukubopha kwe-DBC kusebenzisa i-nitrogen ene-trace oxygen elawulwayo (ngokuvamile i-10–50 ppm O₂) ukwakha i-interface ye-copper oxide evumela ukubopha. I-oxygen eningi kakhulu ikhiqiza i-oxidation eningi kakhulu; okuncane kakhulu kuvimbela ukwakheka kwesibopho. Ukudubula kwefilimu ejiyile kusebenzisa i-nitrogen ukuvimbela i-oxidation yomqhubi ngesikhathi sokusila.

4.3 Ukulawula Okulinganayo

Ama-substrate e-ceramic ayancipha ngesikhathi sokusila — ngokuvamile angu-15–20% kuye ngezinto kanye nenqubo. Lokhu kuncipha kumele kunxeshezelwe kumklamo we-green-tape (we-LTCC/HTCC) noma kulawulwa ngokubekezelelana kokukhetha ama-substrate kwezinqubo ze-metallization ezikhishwe ngemuva kokudubula. Ukubekezelelana kobukhulu bokugcina kwama-PCB e-ceramic okukhiqiza ngokuvamile kuba ngu-±0.05–0.10 mm.

4.4 Amandla Ekhasi

Ukunamathelana phakathi komqhubi kanye ne-ceramic — okulinganiswe ngokuhlolwa kwe-peel okungu-90° nge-IPC-TM-650 ngayinye — kuyisilinganiso sekhwalithi esibaluleke kakhulu sokuthembeka kwe-PCB ye-ceramic. I-DBC elawulwa kahle ifinyelela ku->8 N/mm; izinqubo ezisemaphethelweni ziletha u-4–5 N/mm. Cacisa izindlela zokwamukelwa ezincane ku-oda lakho lokuthenga.

5. Ukuqedwa Komphezulu Nokucutshungulwa Ngemva Kokucutshungulwa

Ukukhetha ukuqeda umphezulu kuncike enqubweni yokuhlanganisa engezansi:

• I-ENIG (Igolide Elingenagesi leNickel / Igolide Elicwiliswe): Izinga elijwayelekile lokuhlanganiswa kwe-SMT; linikeza indawo eyisicaba, ethengiswayo enokuphila okuhle kweshelufu. I-Ni: 3–6 µm, Au: 0.05–0.1 µm
• Igolide eliqinile (i-electrolytic): Kuyadingeka ekubophweni kwentambo (intambo ye-Au noma ye-Al) kanye nezindawo zokuxhumana ezigugile kakhulu. I-Au: 0.5–2.5 µm phezu kwesithiyo se-Ni
• I-Ni/Ag: Kuvamile ekusondweni kwe-power module; kunikeza ukusongeka okuhle kakhulu kanye nezindleko eziphansi kunegolide eliqediwe
• I-OSP: Inketho engabizi kakhulu yemiklamo ezohlanganiswa ngokushesha ngemva kokwenziwa; isikhathi esilinganiselwe sokuphelelwa yisikhathi

Izinyathelo zangemva kokucubungula zingafaka phakathi ukusika nge-laser amanani e-resistor (kumasekethe e-thick-film), ukugaya i-cavity ukuze kufinyelelwe ingxenye, kanye nokushintshashintsha komphetho ukuze kuncishiswe ingozi yokuqhekeka ngesikhathi sokuphatha.

6. Indlela Yokulungisa Amafayela Akho Okuklama Ezenziwe Nge-Ceramic

Ukwenziwa kwe-PCB ye-Ceramic kudinga imibhalo ephelele kakhulu kune-oda elijwayelekile le-FR4. Iphakheji yakho yefayela kufanele ifake:

• ☐ Amafayela e-Gerber (izingqimba zethusi, imaski yokubopha, isikrini sesilika, uhlaka lwe-substrate, izingqimba zokuqinisa/zomgodi uma kusebenza)
• ☐ Umdwebo wokwakha onezilinganiso eziphelele, ukubekezelelana, ukubiza izinto, kanye nencazelo yokuqeda ubuso
• ☐ Imininingwane ye-stackup (izinto ezingaphansi komhlaba, ukujiya, indlela yokwenza insimbi, ukujiya kwethusi)
• ☐ Izidingo zokuhlolwa kukagesi (ukuqhubeka, amanani okumelana nokuhlukaniswa)
• ☐ Izidingo zokuhlolwa kokuthembeka (imijikelezo yokushaqeka kokushisa, amandla amancane okuxebuka, i-voltage yokumelana ne-dielectric)
• ☐ Izintandokazi zokufaka amaphaneli (noma vumela umenzi ukuthi athuthukise)

Izincazelo ezingekho noma ezingacacile ziwumthombo omkhulu wezinkinga zekhwalithi ekwakhiweni kwe-PCB yobumba. Tshala isikhathi kumadokhumenti kusengaphambili - kusindisa amasonto okubuyela emuva nokubuyela emuva kanye nokwakhiwa kabusha okungenzeka.

Cela Isilinganiso Sokwenziwa

7. Izinsizakalo Zokwenza i-PCB Yobumba ye-Highleap

I-Highleap Electronics isebenzisa imigqa yokwenziwa kwe-PCB eyenziwe ngobumba eGuangzhou, eShayina, isekela uhla oluphelele lwezinto zokwakha kanye nezinqubo zokwenza insimbi:

• Izinto: I-Al₂O₃ (96%, 99.6%), i-AlN, i-Si₃N₄ — kanye nokuhlolwa okungenayo kanye nokulandelelwa kwenqwaba yezingxenye ze-substrate ngayinye
• Ukwenziwa kwensimbi: I-DBC (Cu 0.15–0.6 mm), ifilimu eliwugqinsi (Ag-Pd, Au), ifilimu elincanyana (i-Cu/Au ehlutshiwe), i-AMB
• Ukubekezelela: ±0.05 mm ukunemba kobukhulu; i-laser ngokusebenzisa ikhono elifinyelela kububanzi obungu-0.1 mm
• Ubuso buqeda: I-ENIG, igolide eliqinile, i-Ni/Ag, i-OSP
• Isistimu yekhwalithi: ISO 9001 + ISO 13485 + IATF 16949 + ISO 14001
• Ukusekelwa kwe-DFM: Isibuyekezo sobunjiniyela samahhala kuyo yonke i-oda enempendulo ethile, esebenzisekayo

Sihlinzeka ngezinsizakalo zokukhiqiza kuphela kumaqembu aphatha ukuhlanganiswa ngokwehlukana, kanye nokuhlanganiswa kokukhiqiza okuhlanganisiwe + kwe-PCB kulabo abakhetha isisombululo somthengisi oyedwa. Ithimba lethu lobunjiniyela bokuphatha ukushisa liyatholakala ukusiza ukuthuthukisa ukukhethwa kwe-substrate kanye nokushisa ngamasu ngaphambi kokuba umklamo wakho uye ekukhiqizweni.