Aratohu Hoahoa me te Tukatuka Maihao Koura PCB
Ko te PCB Gold Finger he momo papa hiko tānga motuhake, e whakamahia whānuitia ana i roto i ngā tono e hiahia ana kia tino pono me te ātete ki te kakahu, pērā i ngā papahoahoa rorohiko, ngā kāri whakairoiro me ētahi atu taputapu hiko. Ka rukuhia e tēnei tuhinga te whakamāramatanga, ngā tikanga maimoatanga mata me ngā whakaaro hoahoa o ngā PCB koura finger.
Rarangi tuhinga
Ⅰ. Te Whakamāramatanga o te Maihao Koura
II. Ngā tikanga whakaoti mata mō ngā PCB maihao koura
III. Ngā Whakatūpato mō te Hoahoa Maihao Koura
IV. Ngā Whakatūpato mō te Tukatuka i te Maihao Koura
Ngā pātai me ngā whakautu e pātai pinepinetia ana
1. Te Whakamāramatanga o te Maihao Koura
Ko te matimati koura, e mōhiotia ana ko te hononga taha, he taputapu e whakauru ana i tetahi pito o te PCB ki roto i te mokowā hononga. Ka whakamahia e ia ngā pine hononga hei putanga mō te hononga o waho o te PCB hei whakatutuki i te kawe hiko i waenga i te papa whakarewa, te pepa parahi rānei me ngā pine tūranga e rite ana. Hei whakanui ake i tōna kawe hiko, te ātete ki te waikura me te ātete ki te kakahu, ka pania ngā matimati koura ki te whakakikorua nikara koura, ki te ENIG rānei. Nā tōna āhua e rite ana ki te matimati, ka tapaina ko te Matimati Koura.
2. Ngā tikanga whakaoti mata mō ngā PCB maihao koura
He mea nui te tikanga whakaoti mata o te Gold Finger PCB mō tōna mahi me ngā wāhi tono. Ko ngā huarahi e rua e whai ake nei:
1) Whakakikorua Koura Nikara
He tikanga whakaoti mata noa te whakakikorua koura nikara, ā, ka taea e tōna matotoru te tae ki te 3-50 maikoro inihi. He tino pai te kawe hiko, te ātete ki te waikura me te ātete ki te kakahu, nō reira he whānui te whakamahinga ki ngā PCB matimati koura e hiahia ana kia whakauruhia me te tangohia pinepine, ki ngā PCB rānei e hiahia ana kia wakuhia pinepine. Heoi, nā te utu nui o te koura, ko te whakakikorua koura nikara ka whakamahia noa mō te maimoatanga o ngā wāhi ā-rohe pēnei i ngā matimati koura. He hiriwa mā te mata o tēnei tikanga whakaoti mata, engari he ngoikore te kaha ki te whakapiri.
2) WHAKAAE
Ko te ENIG tētahi atu tikanga whakaoti mata e whakamahia whānuitia ana, he matotoru te nuinga o te 1 maikoro inihi tae atu ki te 3 maikoro inihi. He pai rawa te kawe hiko, te maeneene o te mata me te kaha ki te whakapiripiri a te ENIG, ā, he whānuitia te whakamahinga i roto i ngā PCB tino tika me ngā hoahoa pēnei i te kī, te IC here, te BGA, me ētahi atu. Mō ngā PCB maihao koura kāore e hiahiatia he ātete kakahu nui, ka taea hoki te whiriwhiri i te tukanga ENIG katoa o te panera, he iti ake te utu. He kōwhai koura te mata o te ENIG kua oti.
3. Ngā Whakatūpato mō te Hoahoa Maihao Kouran
I te wā e hoahoa ana i tētahi PCB koura-maihao, me mātua mōhio koe ki ētahi o ngā āhuatanga matua:
1) Te ātete mau o te maihao koura
Mō ngā PCB e hiahia ana kia whakauruhia, kia tangohia hoki i ngā wā katoa, hei whakanui ake i te ātete ki te kakahu o ngā maihao koura, me whakamahi te whakakikoruatanga hiko koura mārō.
2) Te whakakoi o te maihao koura
Ko ngā maihao koura me whakakoi te nuinga o te wā, me te koki whakakoi whānui o te 45°. Mā te noho mai o ngā whakakoi ka taea te whakaiti i ngā tūponotanga kino, e whakaaturia ana i te pikitia.
3) Te whakatuwheratanga matapihi mō te kopare whakarewa
Me whakatuwhera te matapihi o te papa honohono o te maihao koura mō te poraka katoa o te kopare honohono, me te kore e hiahiatia he mata rino.
4) Te tawhiti i waenganui i te kopare whakarewa me te maihao koura
Me rite te tawhiti i waenga i te papa honohono me te maihao koura ki ngā whakaritenga hoahoa, ko te tikanga me 1mm te tawhiti o te papa honohono mai i te tūranga o te maihao koura, tae atu ki ngā papa honohono.
5) Te mutunga o te mata o te maihao koura
Kaua te mata o te maihao koura e hipokina ki te parahi.
6) Te maimoatanga tapahi parahi
Me tapahi parahi ngā paparanga katoa o roto o te maihao koura, ā, ko te whānui tapahi parahi he tata ki te 3mm. Ka taea e tēnei te whakaiti i te rerekētanga ārai i waenga i te maihao koura me te rārangi ārai, me te whai hua anō hoki ki te ESD.
Ko ngā āhuatanga o runga ake nei me aro nui atu ki te hoahoa i tētahi PCB maihao koura hei whakarite i te pono me te mahi a te maihao koura.
4. Ngā Whakatūpato mō te Tukatuka i te Maihao Koura
Mena kei te whakaaro koe ki te whakamahi i te PCB koura-maihao, ko ēnei ētahi whakatūpato hei mahi māu i te wā e tukatuka ana i te PCB a Rich Full Joy:
1. Ko te whānuitanga matotoru o te PCB ka taea te whakapiko ko te 1.2mm ki te 2.4mm. Kāore e taea te whakapiko i ngā PCB kāore i roto i tēnei whānuitanga matotoru.
2. Ko te hohonutanga me te koki o te taha whakapiko kei waenganui i te 20° me te 45°. Me rawaka te tawhiti i waenganui i te matihao koura me te taha o te PCB, e taunakihia ana kia 0.6m ki te 1.5mm, kia kore ai e pakaru te matihao koura.
He tohunga a Rich Full Joy ki te tukatuka i ngā PCB koura hei whakarite i te kounga teitei me te pono. Ka taea e tā mātou tukanga te whakatutuki i ngā whakaritenga hoahoa rerekē, ā, ka whakarato i te mahi tino pai mō tō kaupapa.
He mea nui te mahi a ngā PCB matimati koura i roto i te ao hiko hou, ā, ko tōna pono me tōna mahi e whakawhirinaki ana ki ngā tikanga whakaoti mata me ngā taipitopito hoahoa. Mā te whiriwhiri i ngā tikanga tukatuka tika me te aro ki ngā whakaaro hoahoa matua, ka taea te whakarite i te mahi tino pai o ngā PCB matimati koura i roto i ngā tono maha. Mena kei te hiahia koe ki ngā ratonga tukatuka PCB matimati koura kounga teitei, whakaarohia a Ruizhi Xinfeng, ā, ka koa mātou ki te tautoko i a koe.
Ngā Pātai me ngā Whakautu
1. He aha te PCB Gold Finger?
Ko te PCB maihao koura he momo papa ara iahiko tānga motuhake, e whakamahia whānuitia ana i roto i ngā tono hiko e hiahia ana ki te pono me te ātete ki te kakahu, i tapaina i muri i tōna āhua e rite ana ki te maihao.
2. He aha ngā tikanga whakaoti mata mō te PCB maihao koura??
Ko ngā tikanga whakaoti mata noa mō ngā PCB maihao koura ko te whakakikoruatanga hiko koura nikara me te ENIG, he rerekē ngā painga me te whakamahinga.
3. Me pēhea te whakanui ake i te ātete kakahu o te maihao koura?
Hei whakanui ake i te ātete ki te kakahu o ngā maihao koura, he mea tika kia whakamahia he whakakikoruatanga hiko koura mārō hei whakapai ake i te mārō o te mata.
4. He aha ngā mahi whakatūpato hei mahi mā te hoahoa i tētahi PCB koura-maihao?
I te wā e hoahoa ana i tētahi PCB maihao koura, he mea nui kia aro atu ki ngā take matua pērā i te anga whakarara, te whakatuwheratanga matapihi mō te kopare whakarewa, te tawhiti i waenga i ngā papa whakarewa me ngā maihao koura, me te mutunga o te mata o ngā maihao koura.
5. Me pēhea te whakamana i te kounga o te PCB maihao koura?
Ka whakamahia e mātou ngā hangarau matatau me te tino tirotiro kounga hei whakarite kia whakaratohia he hua kounga teitei, pono hoki.
