Momwe mungasankhire bwino zida za PCB ndi zida zamagetsi

Kusankhidwa kwa zipangizo za PCB ndi zipangizo zamagetsi zimaphunzira, chifukwa makasitomala ayenera kuganizira zinthu zambiri, monga zizindikiro za ntchito za zigawo, ntchito, ndi khalidwe ndi kalasi ya zigawo.

Today, ife mwadongosolo atchule mmene molondola kusankha zipangizo PCB ndi zigawo zikuluzikulu zamagetsi.

Kusankha zinthu za PCB

Zopukuta za FR4 epoxy fiberglass zimagwiritsidwa ntchito pazinthu zamagetsi, zopukuta za polyimide fiberglass zimagwiritsidwa ntchito kutentha kwambiri kapena ma board osinthasintha, ndipo zopukuta za polytetrafluoroethylene fiberglass ndizofunikira pamabwalo apamwamba kwambiri. Pazinthu zamagetsi zomwe zimakhala ndi zofunikira zowonongeka kutentha, magawo azitsulo ayenera kugwiritsidwa ntchito.

Zinthu zomwe ziyenera kuganiziridwa posankha zinthu za PCB:

(1) Gawo laling'ono lokhala ndi kutentha kwa magalasi apamwamba (Tg) liyenera kusankhidwa moyenera, ndipo Tg iyenera kukhala yapamwamba kuposa kutentha kwa dera.

(2) Low coefficient of thermal expansion (CTE) ikufunika. Chifukwa coefficient zosagwirizana wa kukula matenthedwe malangizo kwa X, Y ndi makulidwe, n'zosavuta chifukwa PCB mapindikidwe, ndipo zingachititse metallization dzenje kuthyoka ndi kuwonongeka zigawo zikuluzikulu.

(3) Kukana kutentha kwakukulu kumafunika. Nthawi zambiri, PCB imayenera kukhala ndi kukana kutentha kwa 250 ℃ / 50S.

(4) Kupalasa bwino kumafunika. Chofunikira pa tsamba la PCB la SMT ndi <0.0075mm/mm.

(5) Ponena za magwiridwe antchito amagetsi, ma frequency apamwamba amafunikira kusankha kwa zida zokhala ndi dielectric pafupipafupi komanso kuchepa kwa dielectric. Kukana kwa insulation, mphamvu yamagetsi, kukana kwa arc kuti akwaniritse zofunikira za chinthucho.

Kusankhidwa kwa zida zamagetsi

Kuwonjezera pa kukwaniritsa zofunikira za magetsi, kusankha kwa zigawo ziyeneranso kukwaniritsa zofunikira za kusonkhana kwapamwamba kwa zigawo. Komanso malinga ndi zinthu kupanga mzere zida ndi ndondomeko mankhwala kusankha chigawo ma CD mawonekedwe, chigawo kukula, chigawo ma CD mawonekedwe.

Mwachitsanzo, pamene kusonkhana kwapamwamba kumafuna kusankha zigawo zoonda zazing'ono zazing'ono: ngati makina opangira makina alibe chakudya chophatikizira chachikulu, chipangizo cha SMD cha ma CD a braid sichikhoza kusankhidwa;