PCB porous iti

He papa ara iahiko tānga (PCB) i hangaia mā te whakamahi i te hangarau whakairo taiaho, plasma rānei, he iti iho i te 0.15mm te whānui o te kōhao (ko te 0.1mm te paerewa e whakamahia ana e te umanga), e whakamahia ana mō te hononga kiato teitei.

He iti ake te whānui o te kōhao i te 50% i tērā o ngā PCB noa, ka taea e te whānui/mokowā o ngā rārangi te eke ki te 30μm/30μm, ka piki ake te mātotoru o ngā waea mā te 2-3 ngā wā, ā, he pai mō te tuku tohu auau-tiketike me te tere-tiketike.

E ai ki te tukanga, ka wehea ēnei ki ngā via matapo (te arataki taha-kotahi), ngā via tanumia (te arataki ā-roto), me ngā via mā roto (mā te papa katoa). Ko te whānuitanga o te diameter o ngā via matapo noa he 50-100μm.

E whakamahia whānuitia ana i roto i ngā horopaki whakauru kiato-teitei pērā i ngā waea atamai (neke atu i te 60%), ngā teihana turanga 5G, ngā papahoahoa tūmau, me te takai maramara AI.

I puta mai i muri i te pakari o te hangarau keri taiaho i te tekau tau atu i 1990. Ka taea e te tukanga matua o nāianei te whakatutuki i te diameter o te kōhao 30μm, ā, ko te diameter iti rawa o te kōhao he 15μm.

Ka taea e te diameter iti rawa o te kōhao mō te hanga papatipu ahumahi te eke ki te 50μm, ā, ko te rohe taiwhanga he 15μm, engari ka piki haere te utu i te hekenga o te diameter o te kōhao.

I te nuinga o te wā, kāore te ōwehenga āhua e neke ake i te 1:1, ā, ka taea e ngā tukanga motuhake te eke ki te 1:0.8. Tērā pea ka kore e pai te whakakī hiko mēnā he nui rawa te ōwehenga āhua.

Ko te mokowā iti rawa i tūtohutia he ≥80μm hei whakarite i te pumau o te paparanga whakakikorua parahi kore-hiko, me te whakaiti i te mōrearea o ngā ara iahiko poto.

E taunakihia ana kia whakamahia he whakarārangi tauutuutu o ngā papa matua me ngā papa prepreg, me te matotoru o te paparanga dielectric e whakahaeretia ana i te 50-75μm hei whakarite i te kounga tuku tohu.

Me aro nui ki te kaha pirinoa o te kōhao (te uara noa

Mō te whakapūtanga BGA, he pai ake te hoahoa mā te matapo. E rite ana ia papa ki te 1-2 maikorovia, ā, ko te whānui o te raina whakapūtanga kaua e iti iho i te 40μm.

Whakatinanahia te hononga maha-ira i waenga i ngā papa hiko/whenua mā roto i ngā microvias, me te tawhiti ≤5mm, hei whakaiti i te aukati i waenga i ngā papa.

Whakanuia te mātotoru o ngā awa whakamarara wera (e taunakitia ana ≥10 awa/cm²), me te whānui o te kōhao ≥80μm, hei whakapai ake i te pai o te kawe wera.

Me 20-30μm te nui ake o te whakatuwheratanga o te kopare whakapiri i te diameter o te kōhao i ia taha hei ārai i te waituhi kopare whakapiri kei aukati i te kōhao.

Whakamahia he tukanga hanga-ake hei whakanui ake i te maha o ngā paparanga waea, ā, whakamahia ngā via matapo me ngā via huna hei utu mō ngā via mā roto, ka taea ai te whakanui ake i te kiato o ngā waea mā te neke atu i te 30%.

Tae atu ki te keri taiaho (CO₂, taiaho UV), te whakairo plasma, me te keri ā-ringa (e tika ana mō ngā diameter kōhao nui ake), me te keri taiaho neke atu i te 80%.

He pai te taiaho CO₂ mō ngā diameter kōhao o te 0.075-0.15mm me te utu iti; ka taea e te taiaho UV te tukatuka i ngā maikoroiti

Ko te tere keri o te taiaho CO₂ e tata ana ki te 5,000-10,000 kōhao ia meneti, ā, ko te tere keri o te taiaho UV e tata ana ki te 2,000-5,000 kōhao ia meneti.

Ko te tika o te tūnga o te keri taiaho he ±25μm, ko te keri ā-ringa he ±50μm, ā, ka taea e te taiaho UV te whakatutuki i te tika teitei o te ±15μm.

Ka taea e te keri taiaho āwhina-hauota te whakahaere i te teitei o te burr i roto i te 5μm, ka taea rānei te whakamahi i te tango paru plasma.

E hiahiatia ana he tukanga whakakikorua hiko mā roto i te kōhao, me te whakarite i te matotoru o te whakakikorua parahi ki te 25-35μm, me te ōritetanga o te matotoru o te parahi i roto i te kōhao ≥85%.

Whakatakotoria he paparanga parahi 0.3-0.5μm ki runga i te pakitara o te kōhao ārai hei whakarato i tētahi turanga kawe hiko. Me whakahaere te kukū o ngā katote palladium i roto i te otinga whakahohe i te 2-5ppm.

Ko te pāmahana whakapiri he 180-210℃, ko te pēhanga he 300-500psi, ā, ko te tere whakamahana he 1-2℃/meneti hei whakarite kia pakari ōrite te paparanga dielectric.

Me noho te taumata korehau i raro iho i te -95kPa. Whakamātauria te prepreg ki te taumata-B i mua i te whakakikoruatanga, ā, ka taea te whakaiti i te tere o te hapa mirumiru ki raro iho i te 0.5%.

Ko ngā mea e kitea whānuitia ana ko te koura rumaki (matotoru 0.05-0.1μm), te OSP (matotoru kiriata 0.2-0.5μm), me te hiriwa rumaki (0.1-0.3μm). Ko te koura rumaki te mea tino pono.

Me whakahaere te matotoru o te waituhi i te 80-120Pa・s, me te whakamahi i te tikanga mono korehau hei ārai i te toenga waituhi ki roto i ngā kōhao, me te tere aukati kōhao ≤1%.

Ka whakamahia te tapahi taiaho ina iti iho i te ±0.1mm te tika o te āhua. Mō ngā whakaritenga tikanga, ka taea te whakamahi i ngā taputapu mira, me te tere tapahi o te 20,000-30,000rpm.

Tae atu ki ngā pakitara poka taratara (taratara Ra >1.5μm), ngā āputa i roto i ngā poka (ōwehenga āputa >5%), te pekapeka poka (>±30μm), me ētahi atu.

Ka whakamahia te horoi plasma hei tango i ngā toenga keri, kia eke ai te taratara o te mata o te pakitara poka ki te ≤1.0μm.

Ko te hua katoa i raro i ngā tukanga kua pakeke ko te 85-92%. Mēnā he iti ake te whānui o te kōhao, ka iti ake te hua. Ko te hua o ngā microvias 50μm ko te 80%.

Tae atu ki te FR-4 (pūmau dielectric 4.2-4.5), ngā papa tere-nui (pērā i a Rogers 4350B, Dk=3.66), te kapia BT, me ētahi atu.

He iti ake te mate pātaki o ngā papa tere-rahi (Df

Whakamahia mō te here i waenga i ngā paparanga, me te whakahaere i te ihirangi kāpia ki te 40-50% me te rere ki te 20-30% hei whakarite i te ōritetanga o te dielectric i muri i te whakakanapa.

Mō te paparanga o roto, e taunakihia ana te whakamahi i te pepa parahi 18μm, 35μm rānei. Mō te paparanga o waho, ka taea te whakamahi i te 18μm hei whakaiti i te ngaronga tohu. He maha ngā wā ka whakamahia e ngā papa HDI te pepa parahi tino angiangi 9μm.

Me tutuki i a ia te ātete pāmahana (kāore e tihore i te 260℃/10s), te ātete whakamahana (>10^12Ω), me te piri (taumata whakamātautau tapahi whakawhiti 0).

Hei whakaiti i te ngaronga tuku tohu, e taunakihia ana kia whakamahia te pepa parahi RTF (maimoatanga whakamuri) me te taratara Ra

He pai ake ngā rauemi he iti te pūmau dielectric (Dk

Me tutuki i a rātou te ture RoHS 2.0, me te ihirangi halogen (chlorine + bromine)

Ko te rauemi turanga FR-4 te mea iti rawa te utu. Ko te utu mō ngā papa tere-rahi e 3-5 ngā wā i tērā o te FR-4, ā, kei waenganui i tēnā ko te kapia BT.

Me rongoa te rauemi turanga ki raro i te 25℃ me te haumākū ki raro i te 60%. Me tio te rauemi prepreg ki te -18℃ me te wā whai mana o te 6-12 marama.

Tae atu ki te tirotiro tirohanga, te ine i te diameter o te kōhao, te whakamātautau matotoru o te parahi o te kōhao, te whakamātautau aukati, me te tātaritanga whakawhiti-wāhanga.

Whakamahia he taputapu ine ahua-rua (tika ±1μm) he karu hiko matawai rānei (SEM). Ka taea te whakamahi i te tirotiro whatu aunoa (AOI) mō te kimi puranga.

E hiahiatia ana e ngā paerewa IPC kia ≥20μm te matotoru o te parahi i roto i te kōhao, ā, ko te ōwehenga o te matotoru toharite o te parahi ki te matotoru iti rawa o te parahi kia ≤1.5, ka kitea mā te tikanga whakawhiti-whakarewa.

Whakamahia he tātari whatunga me te whānuitanga auau whakamātautau o te 1-10GHz, ā, me whakahaere te rerekētanga aukati i roto i te ±10%.

Ka taea te tirotiro ā-kanohi i te kounga o te pakitara kōhao, te matotoru o te paparanga parahi, me te āhua o te hononga i waenga i ngā paparanga, me te tika o te tapahi o te ±5μm.

Tae atu ki te whakamātautau ahotea wera (260℃/10 ngā wā), te whakamātautau ngaohiko tu atu (500V DC/1 meneti), me te whakamātautau huringa pāmahana-makuku (-40℃~85℃).

Tirohia mēnā ka pakaru te pakitara o te kōhao i muri i te whakamātautau ru wera (288℃/10 ngā wā), ā, e tika ana te roa o te pakaru

Whakamahia te SEM hei tirotiro i te hanganga moroiti, te mātai ira-marara pūngao (EDS) hei kimi i te hanganga o ngā huānga, me te hihi-X hei kimi i ngā hapa o roto.

Whakapai ake i te tukanga whakakikorua hiko hei whakaiti i ngā āputa i roto i ngā kōhao, hei whakapakari i te piri o te paparanga kopare whakarewa, me te karo i te hekenga hikohiko i puta mai i ngā āhuatanga taiao.

I raro i ngā āhuatanga whakamahinga noa, ka taea te eke ki te 5-10 tau, ā, mā ngā taiao kino (te pāmahana teitei, te haumākū teitei) e whakapoto ki te 2-3 tau.

Tae atu ki te whakapiri SMT, te whakarewa BGA, me te whakaurunga wāhanga, me te whakaritenga tika o te whakapiri SMT o ±50μm.

Me whakahaere te pēhanga whakapiri i te 0.5-1.0kg/cm² hei ārai i te hinganga o ngā wāhanga maikoro, ā, ko te pāmahana teitei o te pihi oumu whakahoki he 230-245℃.

He mea tika kia tino whakahaeretia te ōritetanga o ngā pōro honohono (

Whakapai ake i te matotoru o te tānga whakapiri whakapiri (100-120μm), whakamahia te whakapiri whakaata e tiakina ana e te hauota, ā, ko te ihirangi hāora he

Me whakahaere te pāmahana o te mahi anō i raro i te 260℃, ā, me iti iho i te 90 hēkona te roa o te wā hei ārai i te tihorenga o te paparanga parahi i te pakitara o te kōhao.

He pai mō ngā microvias he whānui kōhao ≥0.3mm, e hiahia ana ki te whakapiri ngaru-rua, ki te whakapiri ngaru whiriwhiri rānei, me te teitei o te ngaru whakapiri he 25-35mm.

Whakanuia te whakapiri whakarewa kore-mata (koranu SnAgCu) me te ira rewa o te 217℃, te taumata mahi rere RMA, me te ātete whakamarumaru toenga >10^10Ω.

Whakaitihia te nui o te konganuku o te whakapiri konukōre ki te 90-92%, arotauhia te hoahoa whakatuwheratanga o te tauira, ā, ka taea te whakaiti i te reiti koha o te pītiti konukōre ki raro iho i te 0.1%.

Whakamahia he wai horoi i te pāmahana o te 50-60℃ mō te 3-5 meneti hei whakarite kia

Whakatakotoria te tika o te kitenga ki ±25μm me te paepae rerekētanga ki te 30-50%, e taea ai te kite i te neke atu i te 95% o ngā hapa huihuinga.

Ko ngā utu rauemi he 40-50%, ko ngā utu tukatuka he 30-40%, ā, ko ngā utu tirotiro me te tākai he 10-20%.

Te whānui o te kōhao, te maha o ngā paparanga, te tukanga maimoatanga mata, te momo rauemi. Mā te whakaiti i te whānui iti rawa o te kōhao mā te 15-20% ka piki ake ngā utu.

Whakapai ake i te hoahoa kia whakaitihia te maha o ngā paparanga, kia whakamahia ngā rauemi paerewa, kia whakapiki ake hoki i ngā puranga whakaputa, ka taea ai te whakaiti i ngā utu mā te 10-30%.

Ko te huringa whakaputa mō ngā tukanga tuku iho he 7-10 ngā rā, ā, ka taea te whakapoto i ngā ota tere ki te 3-5 ngā rā, engari ka piki ake te utu mā te 20-30%.

Whakamahia ngā raina whakaputa aunoa, arotauhia ngā rere o te tukanga, me te whakanui ake i te tere whakamahinga o ngā taputapu keri taiaho ki te neke atu i te 80%.

Ko te kaha whakaputa marama o tētahi raina whakaputa kotahi e pā ana ki te 5,000-10,000㎡, i runga i te whirihoranga taputapu me te uaua o te tukanga.

Ko te utu mō ngā puranga iti (1000㎡), nā te whakatakotoranga mīhini me te tohatoha utu pumau te nuinga.

I tatauhia whānuitia mā te horahanga (yuan/㎡), te maha o ngā paparanga, te whānui o te kōhao, me ētahi atu. Ko te utu tukatuka mō tētahi papa microvia 0.1mm 8-paparanga noa he tata ki te 2000-3000 yuan/㎡.

Mā te arotautanga hoahoa DFM, mā te whakangawari i ngā whakaritenga manawanui i raro i te kaupapa o te whakatutuki i te mahi ka taea te whakaiti i ngā utu mā te neke atu i te 15%.

Ko te haumitanga ki tētahi taputapu raina whakaputa katoa e tata ana ki te 10-20 miriona yuan, tae atu ki ngā mīhini keri taiaho, ngā raina whakakikorua hiko, ngā mīhini whakarewa, me ētahi atu.

E whanake ana kia iti ake ngā diameter o ngā kōhao (20 paparanga), kia iti ake te ngaronga, me te whakauru i ngā takai.

Me tutuki te diameter o ngā kōhao hononga poutū

Whakamahia mō te arotau i ngā tawhā tukanga me te kimi hapa atamai, ka taea te whakanui ake i te hua mā te 5-10% me te whai huatanga o te kimi mā te 30%.

Kua tutuki te hanga taiwhanga o ngā kōhao 10μm te whānui, engari he uaua ki te hanga papatipu ngā rauemi, ngā taputapu, me te utu.

Whakatutuki i te hononga maeneene i waenga i ngā maramara me ngā PCB mā te hononga kiato-teitei, whakapoto i ngā ara tuku tohu, me te whakapai ake i te mahi a te pūnaha.

Whakamahia ngā rauemi me ngā tukanga e pai ana ki te taiao, me te whakaiti i te nui o te konganuku taumaha i roto i ngā rerenga wai para kia iti iho i te 1ppm, ā, ka whakaitihia te whakapaunga pūngao mā te 20%.

Me whai rauemi iti te pūmau dielectric (Dk

He mea tika kia whakatauhia ngā raruraru o te pakaru o te pakitara kōhao me te tihore o te paparanga parahi i te wā e piko ana, me te radius piko ≥3mm.

Whakatutuki i te aroturukitanga tukanga katoa me te whakaputa aunoa mā roto i ngā wheketere mamati, me te whakapiki ake i te whai huatanga whakaputa mā te neke atu i te 50%.

Me tino iti te ngaronga me te hononga pumau, me te whakahaere i ngā diameter o ngā kōhao me ngā whānui raina i te taumata iti-micron hei whakarite i te tuku tohu matūriki.

Whakamahia ngā papa HDI paparanga 6-10 me te diameter kōhao o te 0.075mm hei whakatutuki i te whakaurunga kiato-teitei o ngā maramara, ngā kāmera, me ētahi atu, e 30-40% o te utu o te papahoahoa waea pūkoro.

Me whai papa iti-ngaronga (Df

Me tutuki te hononga tere-tiketike o ngā tukatuka maha, te whakamahi i te hangarau keri-muri hei whakakore i ngā porotiti, me te whakaroa i te tuku tohu

Kua paahitia te tiwhikete AEC-Q100, ātete pāmahana -40℃~125℃, ā, kua paahitia te whakamātautau rehu tote 1000-hāora.