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He maha ngā tikanga maimoatanga mata noa mō te tauira poari PCB

wā: 2017-03-06

He rerekē nga tikanga maimoatanga mata whakamahia i roto i te whakatika poari PCB. He ona ake āhuatanga ahurei ia tikanga maimoatanga mata. Tango hiriwa matū hei tauira, Ko te tino māmā tona tukanga. e tūtohu ana mō te ārahi-free whakapiringa me te whakamahi SMT, rawa hoki pai he pai te pānga rārangi, te mea tino nui ko te whakamahi o te hiriwa matū mō te maimoatanga mata, e nui ka whakaiti i te utu whānui, me te utu o raro. Ko te whai ake raupapa iti whakamōhio koe ki te maha o ngā tikanga maimoatanga mata noa mō te whakatika poari PCB.

1. HASL whakaōritenga hau wera (e mohiotia ana ko te rehu tine)

Rehu tine Ko te tikanga maimoatanga nuitia whakamahia i roto i te wā wawe o te poari whakatika PCB. Na wehea ki mata tine ringihia me mata-free te rehu tine. Painga o rehu tine: I muri oti te PCB te, Kei te tino nana te mata parahi (tino hipoki ki te tine i mua i whakapiringa), e tika ana mō te mata-free whakapiringa, iti paari tukanga, e tika ana mō te tirohanga ataata, me te ine hiko, a hoki he kounga nui, me te poari PCB pono. Ko tētahi o nga tikanga tukatuka tohu.

2. Chemical Konukōreko Gold (ENIG)

Nika-koura, ko te ahua o te pereti whakatika PCB tukanga maimoatanga mata ki tono nui. Kia mahara: te apa nika ko te apa koranu nika-ūkuikui, Kei te wehea nei ki tiketike-ūkuikui konukoreko me reo-ūkuikui konukoreko rite ki te ihirangi ūkuikui. He rerekē te tono. Painga o te koura nika-whakakikoruatia: e tika ana mō te mata-free whakapiringa; Ko te tino flat mata, e tika ana mō te SMT, e tika ana mō te whakamātautau hiko, e tika ana mō te hoahoa whakakā whakapā, e tika ana mō te waea konumohe hononga, e tika ana mō ngā mau api matotoru, kaha ki te whakaeke taiao.

3. koura nika Electroplated

Kei te wehea Electroplated koura nika ki "hard gold" a "koura ngohengokoura pakeke gold (pērā i: koranu koura-konukurahina) kei te whakamahia i runga i maihao koura (hoahoa hononga whakapā), Ko te koura parakore te koura ngohengohe. tono Electroplated koura konukoreko te i runga i nga papa kawe IC (pērā i PBGA). Ko reira te nuinga e tika ana mō te waea koura, me te parahi waea hononga. Heoi, Ko reira e tika ana mō IC kawe whakakikorua. Me waea conductive anō te wāhi maihao koura herea ia ki te kia whakakikorua. Painga o hiko poari PCB whakatika nika-koura: e tika ana mō te hoahoa whakapā pana me te koura waea hononga; e tika ana mō te whakamātautau hiko

4. Gold nika Palladium (ENEPIG)

Kei te timata nika-palladium koura inaianei ki te kia tono i roto i te mara o te poari whakatika PCB, Kua a kua whakamahia i roto i Semiconductors i mua i. E tika ana mō te koura, me te waea konumohe here. Painga o whakatika ki nika-palladium-koura poari PCB: tono i runga i IC poari kawe, e tika ana mō te waea koura hononga, me te konumohe waea hononga. E tika ana mō te mata-free whakapiringa; kahore waikura nika (pereti pango) raruraru whakaritea ki ENIG; utu iti iho i te ENIG me hiko-nika koura, e tika ana mō te momo o ngā tukanga maimoatanga mata me te i runga i te poari.

 I tua atu ki te maha o ngā momo i runga o ngā tikanga tukatuka whakatika poari PCB, reira hoki ngā tine matū. he pai hoki te hanga raina whakapae tenei ahua o matū maimoatanga tine mata, me te whakamahia hoki reira. I roto i te kaupapa tukatuka raina pai, ka tīpako koe te mata PCB whakatikatika tikanga maimoatanga mata, Me koe ki te āhuatanga tūturu, i roto i te hononga ki te āhuatanga o te tikanga maimoatanga mata, utu pūtea, kia hoki whiriwhiri kaiwhakanao poari whakatikatika wahi hua rarawe PCB.