Me pēhea te tautuhi mārama i ngā hapa ngaro o te PCBA?
Ngā Paerewa Tirotiro X-RAY
1. Kāore he āputaputa o ngā hononga tūhono BGA:
Ngā paearu whakatau: e whakaaetia ana ina iti iho te rerekētanga i te haurua o te porowhita o te papa whakarewa; Ina nui ake te rerekētanga i te haurua o te porowhita o te papa whakarewa, ka whakakahoretia.
2. Kāore he ara iahiko poto o ngā hononga tūhono BGA:
Paearu whakatau: Mena kāore he hononga tine i waenga i ngā hononga honohono, e whakaaetia ana; mena he hononga honohono i waenga i ngā hononga honohono, me whakakahore.
3. Ngā hononga honohono BGA kāore he āputa:
Ngā paearu whakatau: Ka whakaaetia te wāhi āputa i raro i te 20% o te horahanga katoa o te hononga honohono; Mena he nui ake, he ōrite rānei te horahanga āputa i te 20% o te horahanga katoa o te hononga honohono, me whakakore.
4. Kāore he kore o te tine i roto i ngā hononga honohono BGA:
Ngā paearu whakatau: Ka whakaaetia ina whakaatuhia e ngā pōro tine katoa ngā rahi katoa, he ōrite, he ōrite hoki; Mena he iti ake te rahi o te pōro tine i ērā atu pōro tine i tōna taha, me whakakore.
5. Ko te paerewa tirotiro mō te papa whenua E-PAD o ngā maramara akomanga QFP/QFN mō ētahi hua ko te horahanga tine me nui ake i te 60% o te horahanga katoa (ko ngā whatunga e whā kua honoa ngātahi e tohu ana i te pai o te whakapiringa), ā, ko te ōwehenga tauira he 20%.
1. Whāinga whakamātautau: Ngā papa PCBA me ngā wāhanga BGA/LGA me te papa whenua;
2. Auautanga whakamātautau:
① Whai muri i te whakawhiti, ka whakaū te hunga hangarau mēnā he hapa rerekē kei te papa whakapiri tūhono tuatahi me te papa BGA, kātahi ka haere tonu mā te haere i roto i te rūma i muri i te whakaū kāore he raruraru;
② Ka whakaū te hunga hangarau mēnā he raruraru kei te whakapiri BGA o te papa whakapiri tuatahi i muri i te haerenga i roto i te rūma, kātahi ka tukuna ki te hanga mēnā kāore he raruraru;
③ I te wā whakaputa noa, ko ngā kaimahi kua tohua te kawenga mō te whakamātautau, ā, ki te ≤ 100 ngā ota, me whakamātautau katoa 100%; 101-1000 ngā ota me tauira mō te 30%, 20% ngā ota neke atu i te 1001 ngā ota;
④ I roto i te tukanga whakaputa noa, ka whakahaerehia e te IPQC ngā whakamātautau tauira ki runga i ngā wahi nunui e 2 i ia hāora;
⑤ Me whakamātauhia katoatia ngā hua, ā, me tiaki katoatia ngā whakaahua.
3. Mēnā he hapa, me tiaki ngā whakaahua, ā, me tuhi te tauira BOM, te tau rangatū waehere pae me ngā hua whakamātautau o te hua kua whakamatautauria ki roto i te Puka Rekoata Whakamātautau X-High. Tāpirihia ngā pikitia whakapiri o ngā papa whenua QFP me QFN, ā, tiakina te 100% o ngā whakaahua.
4. Mēnā he hapa kei te kitea i te wā whakamātautau, me ripoata tonu atu ki te rangatira me te miihini tukanga hei whakaū.
Tohunga Tirotiro Maamaa X-ray Ahumahi
E whitu ngā wāhanga o te pūnaha taputapu X-RAY: te pūtake hihi-X arotahi iti, te wae whakaahua, te pūnaha tukatuka whakaahua rorohiko, te pūnaha mīhini, te pūnaha whakahaere hiko, te pūnaha tiaki haumaru me te pūnaha whakatūpato. Ka whakauruhia te whakamātautau kore-whakangaro, te hangarau pūmanawa rorohiko, te hangarau kohikohi me te tukatuka whakaahua me te hangarau tuku mīhini, e kapi ana i ngā mara hangarau matua e whā o te tukatuka whakaahua whatu, mīhini, hiko me te mamati. Mā roto i ngā rerekētanga mimiti o ngā hihi-X e ngā rauemi rerekē, ka whakaahuahia te hanganga o roto o te mea, ka mahia te kimi hapa o roto. Ka taea te tirotiro i te whakaahua kitenga o te hua i te wā tūturu hei whakatau mēnā he hapa, he momo hapa me ngā taumata paerewa ahumahi kei roto i te hua. I taua wā anō, ka whakamahia te pūnaha tukatuka whakaahua rorohiko hei penapena me te tukatuka i ngā whakaahua hei whakapai ake i te māramatanga o te whakaahua me te whakarite i te tika o te aromatawai. Ka taea e ia te ine aunoa i ngā mirumiru i runga i ngā wāhanga hiko kua takaihia pērā i te BGA me te QFN, ā, ka tautoko i ngā inenga āhuahanga pērā i te tawhiti, te koki, te whānui, me te polygon. Ka taea e ia te whakatutuki i te kimi tūnga maha-ira, ka taea ai e ngā hua te wehe atu i te wheketere me te kore hapa.
