Inkqubo yokwenziwa kwe-8-layer PCBs ibandakanya amanyathelo abalulekileyo abalulekileyo ekuqinisekiseni ukuveliswa ngempumelelo kweebhodi ezikumgangatho ophezulu kunye nezithembekileyo.Ukusuka kuyilo loyilo ukuya kwindibano yokugqibela, inyathelo ngalinye lidlala indima ebalulekileyo ekuphumezeni iPCB esebenzayo, eyomeleleyo nesebenzayo.
Okokuqala, inyathelo lokuqala kwinkqubo yokwenziwa kwe-8-layer PCB kuyilo kunye noyilo.Oku kubandakanya ukuyila iplani yebhodi, ukumisela ukubekwa kwamacandelo, kunye nokwenza isigqibo malunga nendlela yokulandela umkhondo. Eli nqanaba lisebenzisa izixhobo zesoftware yokuyila njenge-Altium Designer okanye i-EagleCAD ukwenza ukumelwa kwedijithali kwePCB.
Emva kokuba uyilo lugqityiwe, inyathelo elilandelayo kukwenziwa kwebhodi yesekethe.Inkqubo yokuvelisa iqala ngokukhetha eyona nto ifanelekileyo ye-substrate imathiriyeli, ngokuqhelekileyo i-fiberglass-reinforced epoxy, eyaziwa ngokuba yi-FR-4. Esi sixhobo sinamandla omatshini agqwesileyo kunye neempawu zokugquma, okwenza ukuba zilungele ukwenziwa kwePCB.
Inkqubo yokwenziwa kwemveliso ibandakanya amanqanaba amancinci aliqela, kubandakanywa ukukrolwa, ukulungelelanisa umaleko kunye nokugrumba.I-Etching isetyenziselwa ukususa ubhedu obuninzi kwi-substrate, ukushiya umkhondo kunye neepads ngasemva. Ulungelelwaniso lomaleko luyenziwa ukupakisha ngokuchanekileyo umaleko ohlukeneyo wePCB. Ukuchaneka kubalulekile ngeli nyathelo ukuqinisekisa ukuba iileya zangaphakathi nangaphandle zilungelelaniswe ngokufanelekileyo.
Ukugrumba lelinye inyathelo elibalulekileyo kwinkqubo yokwenziwa kwe-8-layer PCB.Ibandakanya ukugrunjwa kwemingxuma echanekileyo kwi-PCB ukwenza uqhagamshelwano lombane phakathi kweeleya ezahlukeneyo. Le mingxuma, ebizwa ngokuba yi-vias, inokuzaliswa ngezinto eziqhubayo ukunika imidibaniso phakathi kwamaleko, ngaloo ndlela iphucula ukusebenza kunye nokuthembeka kwePCB.
Emva kokuba inkqubo yokuvelisa igqityiwe, inyathelo elilandelayo kukusebenzisa imaski ye-solder kunye nokuprintwa kwesikrini sokumakishwa kwecandelo.Imaski yeSolder ngumaleko obhityileyo wepolymer enolwelo enokufotwa esetyenziselwa ukukhusela umkhondo wobhedu kwi-oxidation kunye nokuthintela iibhulorho ezithengiswayo ngexesha lokuhlanganisa. Umaleko wesikrini sesilika, kwelinye icala, unika inkcazo yecandelo, abaqulunqi bereferensi, kunye nolunye ulwazi olusisiseko.
Emva kokusebenzisa imaski ye-solder kunye nokuprintwa kwesikrini, ibhodi yesekethe iya kuhamba kwinkqubo ebizwa ngokuba yi-solder paste screen printing.Eli nyathelo libandakanya ukusebenzisa i-stencil ukufaka umaleko obhityileyo we-solder paste kumphezulu webhodi yesekethe. I-Solder paste iquka amasuntswana e-alloy yesinyithi anyibilikayo ngexesha lenkqubo ye-reflow soldering ukwenza uqhagamshelwano oluqinileyo noluthembekileyo lombane phakathi kwecandelo kunye ne-PCB.
Emva kokufaka i-solder paste, umatshini wokukhetha kunye nendawo ozenzekelayo usetyenziselwa ukunyusela izinto kwi-PCB.Aba matshini babeka amacandelo ngokuchanekileyo kwiindawo ezichongiweyo ngokusekelwe kuyilo loyilo. Amacandelo abanjwe kwindawo kunye ne-solder paste, okwenza uqhagamshelo lwexeshana lomatshini kunye nombane.
Inyathelo lokugqibela kwinkqubo yokwenziwa kwe-8-layer PCB yi-reflow soldering.Inkqubo ibandakanya ukuthobela yonke ibhodi yesekethe kwinqanaba lobushushu elilawulwayo, ukunyibilikisa i-solder paste kunye nokudibanisa ngokusisigxina amacandelo ebhodini. Inkqubo ye-soldering ye-reflow iqinisekisa uxhulumaniso oluqinileyo noluthembekileyo lombane ngelixa ugwema umonakalo kumacandelo ngenxa yokushisa.
Emva kokuba inkqubo ye-reflow soldering igqityiwe, i-PCB ihlolwe ngokucokisekileyo kwaye ivavanywe ukuqinisekisa ukusebenza kwayo kunye nomgangatho.Yenza iimvavanyo ezahlukeneyo ezifana nokuhlolwa okubonakalayo, iimvavanyo zokuqhubeka kombane, kunye neemvavanyo zokusebenza ukuchonga naziphi na iziphene okanye imiba.
Ngamafutshane, iInkqubo yokwenziwa kwe-8-layer PCBibandakanya uthotho lwamanyathelo abalulekileyo ayimfuneko ekuveliseni ibhodi ethembekileyo nesebenzayo.Ukusuka kuyilo kunye noyilo ukuya kwimveliso, ukudibanisa kunye novavanyo, inyathelo ngalinye linegalelo kumgangatho kunye nokusebenza kwePCB. Ngokulandela la manyathelo ngokuchanekileyo kunye nengqalelo kwiinkcukacha, abavelisi banokuvelisa iiPCB ezikumgangatho ophezulu ezihlangabezana neemfuno ezahlukeneyo zesicelo.
Ixesha lokuposa: Sep-26-2023
Emva
