He aha te keri whakamuri PCB?
Ko te tukanga keri whakamuri PCB, e kiia ana ko te keri hohonu whakahaere, ko te tango i te poro i roto i ngā PCB paparanga maha hei hanga vias. Ko te whāinga o te keri whakamuri he whakahaere i te rere o ngā tohu i waenga i ngā paparanga rerekē o te papa me te kore e pokanoa mai i ngā poro kāore e hiahiatia.
Hei whakamārama mārama ake i te tukanga keri whakamuri, me whakaaro tātou ki tētahi tauira.
Me kī he paparanga-paparanga-12 kei roto he kōhao e hono ana i te paparanga tuatahi me te paparanga-12. Ko te whāinga he hono i te paparanga tuatahi anake ki te paparanga-9, me te pupuri i te paparanga-10 ki te-12 kia kaua e hono. Heoi, ka hangaia e ngā paparanga-kore hono he "pū" ka taea te whakararuraru i te ara tohu, ka hua ake he raruraru pono o te tohu. Ko te keri whakamuri ko te keri i ēnei pū mai i te taha whakamuri o te papa hei whakapai ake i te tuku tohu.
He aha te kaupapa o te keri whakamuri PCB?
Ka whakamahia te keri whakamuri PCB hei tango i te wāhanga kāore i whakamahia o te kōhao-roto kua whakakikoruatia (mā roto) e toro atu ana ki tua atu i te paparanga whakamutunga o te PCB. Ka āwhina tēnei tukanga ki te whakaiti i ngā take pono o te tohu, pērā i te haruru o te porotiti me ngā whakaata tohu, ka puta pea i roto i ngā hoahoa matihiko tere-teitei.
He aha te "ōwehenga āhua"?
Ngā Pātai Auau mō ngā papa hiko tānga › NGĀ KUPU
Te whanaungatanga i waenga i te whānui o te kōhao me tōna roa. Ina kī mai te kaihanga he 8:1 te "ōwehenga āhua" o tā rātou hanga, ko te tikanga, hei tauira, ko te whānui o te kōhao he 0.20 mm i roto i te PCB matotoru 1.60 mm.
Mō ngā hanganga HDI, ko te ōwehenga āhua mō te microvia he 1:1 anake, engari he pai ake te 0.7-0.8:1 hei whakahaere i te whakakikorua.
He aha ngā painga o te keri whakamuri PCB?
Ko ngā painga o te keri whakamuri PCB ko te whakapai ake i te pono o te tohu, te whakaiti i te ngaronga whakaurunga, te whakapai ake i te mana whakawhitiwhiti kōrero, me te whakanui ake i te whānui o te hononga. Mā te tango i te wāhanga kāore i whakamahia o te oko via, ka whakaitihia e te keri whakamuri te haruru o te porotiti me ngā whakaata tohu, ka hua ake he tuku tohu ma ake, he tika ake hoki.