Ii-PCB kwiimveliso ezingaphantsi ziyinxalenye yezixhobo zombane zanamhlanje. Ukutyeba kobhedu yinto ebaluleke kakhulu kwinkqubo yokwenziwa kwePCB. Ubukhulu obuchanekileyo bobhedu bunokuqinisekisa umgangatho kunye nokusebenza kwebhodi yesekethe, kwaye kuchaphazela ukuthembeka kunye nokuzinza kweemveliso zombane.
Ngokubanzi, ubukhulu bethu obuqhelekileyo bobhedu yi-17.5um (0.5oz), 35um (1oz), 70um (2oz)
Ubunzima bobhedu bumisela ukuhanjiswa kombane kwibhodi yesekethe. I-Copper yinto egqwesileyo yokuqhuba, kwaye ubukhulu bayo buchaphazela ngokuthe ngqo umphumo webhodi yesekethe. Ukuba uluhlu lwethusi luncinci kakhulu, iipropati ze-conductive zingancipha, ezikhokelela ekugqithiseni ukuhanjiswa kwesignali okanye ukungazinzi kwangoku. Ukuba umaleko wobhedu unzima kakhulu, nangona i-conductivity iya kuba yinto enhle kakhulu, iya kwandisa iindleko kunye nobunzima bebhodi yesiphaluka. Ukuba umaleko wobhedu unzima kakhulu, kuya kuba lula ukukhokelela ekuhambeni kweglue enzulu, kwaye ukuba i-dielectric layer incinci kakhulu, ubunzima bokusebenza kwesekethe buya kwanda. Ke ngoko, ubukhulu bobhedu be-2oz abukhuthazwa. Kwimveliso ye-PCB, ubukhulu bobhedu obufanelekileyo kufuneka bukhethwe ngokusekelwe kwiimfuno zoyilo kunye nesicelo sokwenene sebhodi yesekethe ukufezekisa umphumo ongcono wokuqhuba.
Okwesibini, ubukhulu bobhedu bunempembelelo ebalulekileyo ekusebenzeni kokutshatyalaliswa kobushushu bebhodi yesekethe. Njengoko izixhobo zombane zanamhlanje zisiba namandla ngakumbi nangakumbi, ubushushu buyanda ngakumbi xa zisebenza. Ukusebenza kakuhle kokutshatyalaliswa kobushushu kunokuqinisekisa ukuba izinga lokushisa lamacandelo e-elektroniki lilawulwa ngaphakathi kwinqanaba elikhuselekileyo ngexesha lokusebenza. Uluhlu lobhedu lusebenza njenge-thermal conductive layer yebhodi yesiphaluka, kwaye ubukhulu bayo bunquma umphumo wokutshatyalaliswa kobushushu. Ukuba umaleko wobhedu uncinci kakhulu, ubushushu abunakuqhutywa kwaye buchithwe ngokufanelekileyo, kwandisa umngcipheko wamacandelo okushisa.
Ke ngoko, ubukhulu bobhedu bePCB abunakuba mncinci kakhulu. Ngexesha lenkqubo yoyilo lwe-PCB, sinokubeka ubhedu kwindawo engenanto ukuncedisa ukutshatyalaliswa kobushushu bebhodi yePCB. Kwimveliso ye-PCB, ukukhetha ubungqingqwa bobhedu obufanelekileyo kunokuqinisekisa ukuba ibhodi yesekethe inokukhutshwa kakuhle kobushushu. ukusebenza ukuqinisekisa ukusebenza ngokukhuselekileyo amacandelo elektroniki.
Ukongezelela, ubukhulu bobhedu bunempembelelo ebalulekileyo ekuthembekeni nasekuzinzeni kwebhodi yesiphaluka. Uluhlu lwethusi alusebenzi nje kuphela njengombane kunye ne-thermal conductive layer, kodwa lusebenza njengenkxaso kunye noluhlu lokudibanisa kwibhodi yesiphaluka. Ubunzima obufanelekileyo bobhedu bunokubonelela ngamandla okwaneleyo komatshini ukukhusela ibhodi yesiphaluka ekugobeni, ukuphuka okanye ukuvula ngexesha lokusetyenziswa. Kwangaxeshanye, ubukhulu bobhedu obufanelekileyo bunokuqinisekisa umgangatho we-welding webhodi yesekethe kunye namanye amacandelo kunye nokunciphisa umngcipheko weziphene ze-welding kunye nokungaphumeleli. Ke ngoko, kwimveliso ye-PCB, ukukhetha ubukhulu obufanelekileyo bobhedu kunokuphucula ukuthembeka kunye nokuzinza kwebhodi yesekethe kunye nokwandisa ubomi benkonzo yeemveliso zombane.
Ukushwankathela, ukubaluleka kobunzima bobhedu kwimveliso yePCB ayinakungahoywa. Ubuninzi bobhedu obuchanekileyo bunokuqinisekisa ukuqhutyelwa kombane, ukusebenza kokutshatyalaliswa kobushushu, ukuthembeka kunye nokuzinza kwebhodi yesiphaluka.
Kweyona nkqubo yokuvelisa, kuyimfuneko ukukhetha ubukhulu obufanelekileyo bobhedu olusekelwe kwizinto ezifana neemfuno zoyilo lwebhodi yesekethe, iimfuno zokusebenza, kunye nokulawulwa kweendleko zokuqinisekisa umgangatho kunye nokusebenza kweemveliso ze-elektroniki. Kungale ndlela kuphela apho ii-PCBs ezikumgangatho ophezulu zinokuveliswa ukuhlangabezana nokusebenza okuphezulu kunye neemfuno zokuthembeka okuphezulu kwezixhobo zanamhlanje zombane.
