Mokhoa oa lipalo oa PCB bophara ba line le hajoale li tjena:

Pele bala libaka tse parolang tsa Track. Botenya ba koporo ea boholo ba PCBS ke 35um (haeba o sa tsebe hantle, o ka botsa moetsi oa PCB). Sebaka se nang le likarolo li tšeloa ka bophara ba mola. Ho na le boleng ba boleng ba sejoale-joale bo tsoang ho li-amperes tse 15 ho isa ho tse 25 ka limilimithara tse sekwere.

Lekanya sebaka se nang le likarolo tse fapaneng ho fumana phallo ea phallo. I = KT0.44a0.75K ke coefficient ea khalemelo. Ka kakaretso, 0.024 e nkuoa karolong e kahare ea terata e koahetsoeng ka koporo, ‘me 0.048t e nkuoa mokatong o kantle joalo ka ha mocheso o phahama ka ho fetesisa, mme yuniti ke Celsius (ntlha ea qhibiliho ea koporo ke 1060 ℃). A ke sebaka se arotsoeng ka koporo se koahetsoeng, ‘me yuniti e lisekoere MIL (eseng mm mm, Ke ‘na oa morao-rao o lumelloang haholo, yuniti ea amperes (AMP) hangata e 10mil = 0.010inch = 0.254, e ka bang 1A, 250MIL = 6.35mm, mme ke data ea 8.3A. Palo ea PCB e nang le matla a hona joale e haelloa ke mekhoa le litlhahlobo tse nang le matla. Baenjiniere ba nang le boiphihlelo ba CAD ba ts’epa boiphihlelo ba bona ho etsa likahlolo tse nepahetseng. Empa ho novice ea CAD, ho ke ke ha thoe ho fihlela bothata bo thata.

Matla a hona joale a ho jara PCB a ipapisitse le lintlha tse latelang: bophara ba mola, botenya ba mola (botenya ba koporo ea koporo), mocheso o lumelloang o phahama. Joalokaha bohle re tseba, ho pharalla ha mohala oa PCB, ho matlafatsa bokhoni ba hona joale. Mona, ka kopo mpolelle: ho nka hore 10MIL e ka mamella 1A tlasa maemo a ts’oanang, 50MIL e ka mamella bokae hona joale, ke 5A? Karabo, ehlile, ke che. Bophara ba mola bo ka yuniti ea Inch (Inch Inch = 25.4 millimeters) 1 oz. Koporo = 35 micron teteaneng, 2 oz. = 70 micron teteaneng, 1 oz = 0.035mm 1mil. = 10-3inch. Trace Capacityper MIL STD 275

Lerotholi la khatello le bakoang ke ho hanyetsa ha bolelele ba terata le lona le lokela ho tsotelloa tekong. Thini ea li-welds tsa ts’ebetso e sebelisoa feela ho eketsa bokhoni ba hajoale, empa ho thata ho laola molumo oa thini. 1 OZ koporo, 1mm ka bophara, ka kakaretso 1-3 A galvanometer, ho latela bolelele ba mohala oa hau, litlhoko tsa khatello ea khatello.

Boleng bo phahameng ba hajoale e lokela ho ba boleng bo lumellehang ka ho fetesisa tlasa moeli oa ho phahama ha mocheso, ‘me boleng ba fuse ke boleng boo mocheso o nyolohang o fihlelang qhibilihisong ea koporo. Mohl. 50mil 1oz mocheso o phahama ka likhato tse 1060 (ke hore, qhibiliha koporo), hona joale ke 22.8A.