Kodi mapangidwe a PCB ndi ofunikira bwanji pakuyika kwa SMT?

Choyamba tifotokoza zambiri pamutu wathu, ndiye kuti, momwe mapangidwe a PCB alili ofunikira panjira ya SMT patch.Pokhudzana ndi zomwe tazisanthula kale, titha kupeza kuti mavuto ambiri amtundu wa SMT amagwirizana mwachindunji ndi mavuto a kutsogolo.Zili ngati lingaliro la "deformation zone" lomwe timapereka lero.

Izi makamaka za PCB.Malingana ngati pansi pa PCB ndi yopindika kapena yosagwirizana, PCB ikhoza kukhala yopindika panthawi ya ndondomeko yopangira wononga.Ngati zomangira zingapo zotsatizana zimagawidwa pamzere kapena pafupi ndi malo ofufuzira omwewo, PCB idzakhala yopindika ndikupunduka chifukwa cha kupsinjika mobwerezabwereza panthawi yoyendetsa wononga.Timatcha dera lopindika mobwerezabwereza kuti ndi deformation zone.

Ngati ma chip capacitor, BGAs, ma modules, ndi zina zomwe zimasintha kupsinjika zimayikidwa m'dera lopindika panthawi yoyika, ndiye kuti cholumikizira cha solder sichingasweka kapena kusweka.

Kuphwanyidwa kwa gawo lamagetsi opangira magetsi pankhaniyi ndizochitika izi

(1) Pewani kuyika zinthu zomwe zimakhudzidwa ndi kupsinjika m'malo omwe ndi osavuta kupindika ndi kupunduka panthawi ya msonkhano wa PCB.

(2) Gwiritsani ntchito zida zam'munsi za bulaketi panthawi ya msonkhano kuti muchepetse PCB pomwe phula limayikidwa kuti zisapindike pa PCB panthawi ya msonkhano.

(3) Limbikitsani zolumikizira zogulitsira.