Khetha izinto ezifanele i-PCB eminingi

Kulokhu okuthunyelwe kwebhulogi, sizoxoxa ngezinto ezibalulekile nemihlahlandlela yokukhetha izinto ezingcono kakhulu ze-PCB eminingi.

Lapho uklama futhi ukhiqiza amabhodi wesekethe we-multilayer, enye yezinto ezibaluleke kakhulu okufanele icatshangelwe ukukhetha izinto ezifanele. Ukukhetha izinto ezifanele zebhodi lesifunda lezendlalelo eziningi, okuhlanganisa i-substrate ne-copper foil, kungaba nomthelela omkhulu ekusebenzeni nokuthembeka komkhiqizo wokugcina.

Qonda indima ye-substrate

I-base material iyisisekelo samabhodi esekethe e-multifunctional. Idlala indima ebalulekile ekuhlinzekeni ukwesekwa kwemishini, ukufakwa kukagesi kanye nokukhipha ukushisa ngaphakathi kwebhodi lesekethe. Ngakho-ke, ukukhetha i-substrate efanele kubalulekile ekuqinisekiseni ukwethembeka okuphelele kanye nokusebenza kwebhodi lesifunda.

Uma ukhetha i-substrate yebhodi lesifunda se-multilayer, kunezici eziningana okufanele uzicabangele. Ama-substrates asetshenziswa kakhulu afaka i-FR-4, i-polyimide nezinto zobumba. Impahla ngayinye inezici ezihlukile kanye nezinzuzo ezihambisana nezidingo zebhodi lesifunda.

1. FR-4:I-FR-4 iyindawo engaphansi esetshenziswa kabanzi eyaziwa ngezakhiwo zayo ezinhle kakhulu zokuhlukanisa ugesi namandla emishini. Iqukethe ungqimba oluncane lwe-epoxy resin reinforced fiberglass. I-FR-4 iyabiza, itholakala kalula, futhi ilungele izinhlelo zokusebenza eziningi. Kodwa-ke, ngenxa yokungaguquguquki kwayo okuphezulu kwe-dielectric kanye ne-tangent yokulahlekelwa, ingase ingafaneleki ukwakhiwa kwesekethe ye-high-frequency.

2. I-Polyimide:I-Polyimide ilungele izinhlelo zokusebenza ezidinga ukuguquguquka, ukumelana nokushisa okuphezulu, nokumelana namakhemikhali okuhle kakhulu. Kuyimpahla ye-thermoplastic engamelana nezimo zokusebenza ezinzima. Amabhodi esekethe e-Polyimide avame ukusetshenziswa ezimbonini ze-aerospace, zezimoto nezokwelapha lapho imiklamo engasindi nehlangene ibalulekile.

3. Izinto ze-Ceramic:Ngezinhlelo zokusebenza ezikhethekile ezidinga ukuqhutshwa kwe-thermal ephezulu kanye nokufakelwa kahle kagesi, izinto zobumba ezifana ne-aluminium nitride noma i-aluminium oxide yisinqumo sokuqala. Lezi zinto zinezici ezinhle kakhulu zokushisa futhi zingakwazi ukuphatha ukusebenza kwamandla aphezulu.

Linganisa Izinketho Ze-Copper Cladding

I-copper clad foil isebenza njengesendlalelo se-conductive kumabhodi wesekethe we-multilayer. Inikeza izindlela zikagesi kanye nokuxhumana phakathi kwezingxenye ezahlukene namasekethe. Lapho ukhetha i-foil ye-copper clad, kunezici ezimbili eziyinhloko okufanele uzicabangele: ukujiya kwe-foil kanye nohlobo lokunamathela.

1.Ubukhulu be-foil:I-foil ye-Copper clad iza ngobukhulu obuhlukahlukene, imvamisa isukela kuma-ounces angu-1 kuye kwayi-6. Ubukhulu bunquma umthamo wamanje wokuthwala webhodi lesifunda. I-foil ewugqinsi ingakwazi ukuthwala imithwalo yamanje ephakeme kodwa ingase ibe nomkhawulo ekuzuzeni ububanzi bokulandela umkhondo kanye nesikhala. Ngakho-ke, kubalulekile ukuhlola izidingo zamanje zesekethe bese ukhetha ukujiya kwe-foil okuzohlangabezana ngokwanele nezidingo zamanje.

2.Uhlobo lokunamathela:I-copper clad foil ene-acrylic noma i-epoxy adhesive. I-Acrylic adhesive foil inobungani bemvelo, kulula ukusetshenzwa futhi iyonga imali. Ngakolunye uhlangothi, ama-epoxy adhesive foil anikeza ukuzinza okungcono kokushisa, ukumelana namakhemikhali, nokunamathela. Ukukhethwa kohlobo lwe-adhesive kuncike ezidingweni ezithile zohlelo lokusebenza.

Lungiselela inqubo yokukhetha impahla

Ukuze kuthuthukiswe inqubo yokukhetha impahla yamabhodi esekethe amaningi, imihlahlandlela elandelayo kufanele inakwe:

1. Nquma izidingo zohlelo lokusebenza:Kubalulekile ukuqonda indawo yokusebenza, amazinga okushisa, izingcindezi zemishini, nezinye izimo eziqondene nohlelo lokusebenza. Lolu lwazi luzoqondisa ukukhethwa kwezinto ezingamelana nezimo ezidingekayo.

2.Sebenza nabahlinzeki:Ukubonisana nomphakeli wezinto zokwakha onesipiliyoni noma umkhiqizi we-PCB kunganikeza imininingwane ebalulekile ekukhetheni izinto ezifanele kakhulu. Bangakwazi ukunikeza iseluleko ngokusekelwe emakhono abo kanye nolwazi lwentuthuko yakamuva ezintweni zebhodi lesifunda.

3. Linganisa Izindleko Nokutholakala:Nakuba ukusebenza nokuthembeka kubalulekile, kubalulekile ngokufanayo ukucabangela izindleko nokutholakala kwezinto ezikhethiwe. Qinisekisa ukuthi izinto ezikhethiwe ziyonga futhi zitholakala kalula ngamanani adingekayo.

Ngokufigqiwe

Ukukhetha izinto ezilungele ama-PCB amaningi kuyisinyathelo esibalulekile sokuqinisekisa ukusebenza, ukwethembeka nokusebenza komkhiqizo wokugcina. Ukuqonda indima ye-substrate ne-copper cladding, izinketho zokuhlola ngokusekelwe ezidingweni ezithile, nokuthuthukisa inqubo yokukhetha kuzosiza abaklami nabakhiqizi bafinyelele imiphumela engcono kakhulu. Ngokucabangela le mihlahlandlela, onjiniyela bangakhetha ngokuzethemba izinto ezifanele zamabhodi esekethe amaningi, okuholela emiklameni yomkhiqizo eyimpumelelo nehlala isikhathi eside.