Ko te whakaaro taketake o te PCB maimoatanga mata ko ki te whakarite weldability pai ranei performance.Because hiko te parahi tūturu i roto i te rangi e whangai ana ki te hei i roto i te puka o waikura, he reira pea ki te noho parahi mo te wa roa, na e hiahiatia ana parahi te mo te tahi atu maimoatanga .
1.Hot Air Whātaumata (HAL / HASL)
Hot whakaōritenga rangi, ano e mohiotia ana ko te hau wera te whakaōritenga tūhoto (nuitia mohiotia rite HAL / HASL), pani nei i runga i te PCB mata whakawera tūhoto tine whakarewa (mata), me te whakamahi kōpeke rangi ki te katoa (patu) hangarau flat, kia tona ahua he apa o te parahi pitihāoratanga resistance, a taea whakarato weldability pai o te tūhoto paninga layer.The me parahi e hanga e i roto i te tahi ki te hanga i te PCB compound.The kia rumakina i roto i tūhoto whakarewa i roto i wera maripi hau rangi conditioning.The flushes te tūhoto wai i mua i taea maripi hau te tūhoto solidifies.The whakaiti te tauhia o te tūhoto i runga i te mata parahi, me te ārai kakano ia piriti.
2.Organic Weldable Protective Agent (OSP)
tāngia OSP te ara iahiko poari (PCB) parahi konumohe maimoatanga mata o te ahua o te hangarau ki te whakatau i nga whakaritenga o RoHS directive.OSP ko te whakarāpopototanga o Organic Solderability rokiroki. Kei te mohiotia te reira i hoki rite te kiriata whakapiringa Organic, mohiotia hoki rite te kaitiaki parahi, a hoki e mohiotia ana ko Preflux i English.In te tono mai, te OSP ko te apa matū whakarerekētia kiri organic o runga te mata o pokekore, i whanau copper.This kiriata he anti-hāora, waiariki ru me te makuku ātete, e taea te tiaki i te mata parahi i waikura (hāora vulcanization ranei) i roto i environment.But noa i roto i te wera fehokotaki'anga muri, te kiriata tiaki a me hohoro tonu te tango i te rere ngāwari, kia tika e taea hanga he ma parahi mata o te whakaaturanga i roto i te wā poto rawa o te wa ki te tūhoto whakarewa riro tonu he hononga tūhoto mārō.
3.Full pereti Konukōreko / Gold
whakakikoruatia Plate Konukōreko / Gold te i runga i te mata o te PCB me ka whakakikoruatia ki te apa o te koura. Ko te nuinga te whakakikorua konukoreko ki te ārai i te tūringiringi o koura, me te copper.Now reira e rua ngā momo o te hiko nika koura: (, titiro mata koura koura e kore e kanapa) whakakikorua koura ngohengohe me te whakakikorua koura pakeke (he maeneene, me te pakeke mata, kakahu-taliteke'i , i roto i te tahi atu āhuatanga pērā i konukurahina titiro, te koura atu marama) kei te nuinga .Soft koura whakamahia mō te waea koura kongakonga tākai: kei te nuinga te koura pakeke whakamahia mō te ngatahi hiko i roto i ngā wāhi fehokotakianga-kore.
4.Immersion Gold
pani rumaki koura e ki te matotoru, electrically pai koranu nika-koura i runga i te mata parahi, e taea te tiaki i PCB mo te tua time.In roa, te mea i te ngāwari o te tahi atu technologies.In tua maimoatanga mata, totohu koura ka taea hoki e te ārai i te whakakorenga o te parahi, i e kia maitai ki te arahi-free whakaminenga.
5.Immersion Tin
Mai hāngai solders katoa e ki runga ki tine, ka taea e te apa tine ōrite tetahi momo o te tukanga solder.Tin i waenganui i pūhui tine parahi flat taea te hanga e, hanga tenei āhuatanga tine taimaha kua rite te whakaōritenga hau wera o te weldability pai me kore te hau wera rapataumata flatness o raruraru ānini: e kore e taea te rongoa tine rumaki mo te roa rawa, a me huihui rite ki te tikanga o te whakatau tine.
6.Immersion hiriwa
te tukanga hiriwa kei waenganui i te paninga organic me whakakikorua konukoreko electroless. He ohie a fast.Even te tukanga, ka whai wāhi ki te wera, haumākū me te parahanga, hiriwa e taea te pupuri weldability pai, engari ka ngaro tona hiriwa luster.The e kore i te kaha tinana pai o te nika whakakikorua matū / totohu koura no reira he kahore nika i raro i te apa hiriwa.
7.ENEPIG (Electroless Konukōreko Electroless Palladium rumaki Gold)
Ina whakaritea ki ENEPIG ko ENIG, i reira he he paparanga atu o palladium i waenganui i konukoreko me te koura. Kei te tata hipoki palladium taea te ārai i te āhuatanga te waikura meinga e te tauhohenga whakauru, ka hanga te faaineineraa tonu mo gold.Gold rumaki ki palladium, whakarato i te atanga pai.
8.Plating Hard Gold
I roto i te tikanga ki te whakapai ake i te taonga kākahu-whakakeke o te hua, ake i te tau kōkuhu ki me te mea whakakikorua koura pakeke.
