Mā te whakawhanaketanga o ngā hua hiko ki te aronga o te mārama, te angiangi me te iti, ka panaia hoki te PCB ki te whanaketanga kaha rawa me te whanaketanga nui rawa, ā, kei te nui ake, nui ake hoki ngā whakaritenga a te kiritaki, kua hoahoatia e ētahi kiritaki mā te papa i roto i te papa. Heoi he aha te tikanga o te papa, me pēhea hoki te whakawa i roto i te papa?
Whakamāramatanga o mā te papa
Ko te rua i raro i te papa e mono mai ana ki te resin i te tuatahi, ā, ka peretitia he apa kapa ki runga i te roto o roto kia āhua ai te mata pēnei i te mata kapa nui, ā, ka tanumia te rua ki raro i te papa.
Ka taea e te papa i roto i te papa te whakanui ake i te rohe o te papa mata. Mō te whānui raina iti me te mokowā raina, ina iti te horahanga pcb me te horahanga papa, ka taea te whakaiti i te horahanga me te rahi o te pcb i a ia e whakaoti ana i te whanonga.
Ko te nuinga o te wā e whakamahia ana i roto i te papa i te wāhi pōkai o BGA PCB, ina hiahiatia kia hokona, kia āpitihia rānei te mata, he tiketike ngā whakaritenga mō tōna wāhi tika, tika hoki, ā, he tiketike hoki te papatahi o te mata, kia kore ai e taea te ārai i ngā rīwai kia kore ai e ōrite, kia kore ai e ōrite ki te kaihoko hē, ki ngā hononga kino rānei, E tūtohu ana mātau kia ENIG te rapunga mata taketake.
Me pēhea te whakawa i roto i te papa
- Ko te mā te papa e hiahiatia ana e te kiritaki.
- I te takiwā BGA, ka wiritia ngā puare mā ngā rua i runga i ngā hononga kaihoko BGA me te apa whakapiri, ka whakamahia te apa hīpoki kaihoko me te whakatuwheratanga o te apa hīpoki kaihoko hei whakawā.
- E hiahiatia ana e te kiritaki kia mono mai te rua ki tētahi rauemi (i raro noa iho i te 0.6mm) me te whakawhāiti ki te pū kapa, mā te pū kapa, ka whakamahia te papa.
- Ka whakamahi te horahanga BGA i te tāpare pūāhua hei āwhina i te tāutunga.
- Ko te rahi o te rua mā te rua i te rohe BGA kei raro iho i te 0.3mm, ā, ko te hononga kaihoko e tata ana ki te 10mil, e whakawāteatia ana e te rahi o te waehere D.
- I te rohe BGA, me aro atu ki te rahi o te hīpoki kaihoko, te whakapiri me te whakatuwhera nā te mea ka kaha te rahi tūturu o te papa kaihoko i runga i te apa arawhiti. Kaua e taha kotahi, he mā te papa i te wā e pā ana te whakatuwheratanga ki te rua.
- Ka whakaaturia te whakatuwheratanga o ngā hononga kaihoko BGA ki tētahi huānga tapawhā, ā, ka āta whakaritea, ka kōwhaotia ngā puare ki ngā hononga kaihoko BGA hei karo i te hē i takea mai i te whakatuwheratanga.
- Kaua e whakamahi i te PGA hei papa i roto i te papa mā te hē: me kōkuhu e ngā kiritaki i te rohe PGA ngā kokonga pine. Ko te nuinga o te wā, he tino nui te rohe o te papa, te rīngi hoko rānei, ā, ka kaha te pukapuka ā-ringa a te kiritaki.
