The ibhodi yesifunda ephrintiwe Siqukethe i-substrate evikela indawo, ibhodi lesifunda uqobo, nezintambo eziphrintiwe noma imikhondo yethusi enikeza indlela ugesi ogeleza ngayo esifundeni. Izinto ze-substrate zisetshenziswa futhi njenge-PCB ukwahlukanisa ukuhlinzekela ukwahlukanisa ngogesi phakathi kwezingxenye eziqhubayo. Ibhodi le-multilayer lizoba ne-substrate engaphezu kweyodwa ehlukanisa izingqimba. Yini i-substrate ejwayelekile ye-PCB eyenziwe?

PCB substrate impahla

Izinto ze-substrate ze-PCB kufanele zenziwe ngento engeyona yokuqhuba ngoba lokhu kuphazamisa indlela yamanje ngokusebenzisa isekethe ephrintiwe. Eqinisweni, into esezingeni eliphansi yisivikelo se-PCB, esisebenza njengesivikelo sikaphayiyoelectric wesekethe yebhodi. Lapho uxhuma izintambo ezingqimbeni eziphambene, ungqimba ngalunye lwesifunda luxhunywe ngezimbobo ezifakwe ebhodini.

Izinto ezingasetshenziswa njengama-substrate asebenzayo zifaka i-fiberglass, i-teflon, i-ceramics namanye ama-polymers. I-substrate ethandwa kakhulu namuhla mhlawumbe i-FR-4. UFr-4 uyi-fiberglass epoxy laminate engabizi kakhulu, enikeza i-insulator enhle kagesi futhi ine-flame retardancy ephakeme kune-fiberglass yodwa.

Uhlobo lwe-PCB substrate

Uzothola izinhlobo eziyisihlanu ze-PCB substrate emabhodini wesifunda aphrintiwe. Yiluphi uhlobo lwe-substrate oluzosetshenziselwa ibhodi lesifunda eliphrintiwe ngqo lincike kumkhiqizi wakho we-PCB kanye nohlobo lwesicelo. Izinhlobo ze-PCB substrate zimi kanje:

UFr-2: I-FR-2 kungenzeka ukuthi yibanga eliphansi kakhulu le-substrate ozoyisebenzisa, naphezu kwezakhiwo zalo ezilangabi ilangabi, njengoba kukhonjisiwe egameni le-FR. Yenziwe ngento ebizwa nge-phenolic, iphepha elikhulelweyo elifakwe ngemicu yengilazi. I-elektroniki yabathengi eshibhile ijwayele ukusebenzisa amabhodi wesifunda aphrintiwe anezingxenye ze-FR-2.

Fr-4: Enye yezinto ezivamile ze-PCB substrate i-fiberglass eluka substrate equkethe into elangabi cishe yizona ezisetshenziswa kabanzi. Kodwa-ke, inamandla kune-FR-2 futhi ayiqhekeki noma iphule kalula, yingakho isetshenziswa kwimikhiqizo ephezulu. Ukubhoboza izimbobo ngaphakathi noma ukucubungula imicu yengilazi, abakhiqizi be-PCB basebenzisa amathuluzi we-tungsten carbide ngokuya ngohlobo lwento.

I-RF: I-RF noma i-RF substrate yamabhodi wesifunda aphrintiwe enzelwe ukusetshenziswa kuzicelo zamandla amakhulu ze-RF. Izinto ze-substrate zakhiwe ngamaplastiki we-dielectric aphansi. Le nto ikunikeza izakhiwo zikagesi ezinamandla kakhulu, kepha izakhiwo ezibuthakathaka kakhulu zomshini, ngakho-ke kubalulekile ukwenza ngokwezifiso ibhodi le-RF ngohlobo lwesicelo olufanele.

Ukuzivumelanisa nezimo: Yize amabhodi e-FR nezinye izinhlobo zama-substrate athanda ukuba lukhuni kakhulu, ezinye izinhlelo zingadinga ukusetshenziswa kwamabhodi aguquguqukayo. Lezi zifunda eziguquguqukayo zisebenzisa ipulasitiki elincanyana, eliguquguqukayo noma ifilimu njenge-substrate. Yize amapuleti aguquguqukayo eyinkimbinkimbi ukukhiqizwa, anezinzuzo ezithile. Isibonelo, ungagoba ibhodi eliguqukayo ukuze ulingane isikhala ibhodi elijwayelekile elingakwazi.

Insimbi: Uma uhlelo lwakho lokusebenza lufaka i-electronics yamandla, kufanele ibe nokuqhuba okuhle okushisayo.Lokhu kusho ukuthi ama-substrates anokumelana okuphansi okushisayo (njengama-ceramics) noma izinsimbi ezingaphatha imisinga ephezulu yamandla amabhodi wesifunda aphrintiwe angasetshenziswa.