Ma o ka lahilahi o ka mānoanoa keleawe o ka lahilahi a hāmama ka puka PCB ʻimi pū kekahi ʻoihana hana, kekahi o nā pilikia loea nui i ka wā i hala i ka puka ākea kūkā kūkākūkā a me nā ʻatikala noiʻi i kaupalena ʻia i ka ʻōnaehana papa PCB o ka papa, ka pepa no ka CTE o ka coefficient hoʻonui hoʻonui thermal ʻoi aku ka nui, ma hope o ka hui o ʻo ke anuanu a me ka wela weliweli ke kumu o ka hihia ʻana o ka lua, e like me ka hana keleawe me ka ʻole o ka PCB ponoʻī. Hole keleawe electroplating e kālailai a hoʻonā i nā pilikia. Nānā kēia pepa i ke kumu o ka lahilahi o ke keleawe i ka lua mai ka ʻaoʻao o ka electroplating PCB, a haʻi iā mākou pehea e pale ai i ka maikaʻi ʻole o PCB i hoʻokumu ʻia e ke kaapuni hāmama ma muli o ka lahilahi o ke keleawe i ka puka mai ka hiʻohiʻona o electroplating.

‘Lelo maʻamau, ʻo ka hapa nui o ka mānoanoa keleawe o ka papa kuʻuna kuʻuna e koi ʻia ma waena o 0.8-1mil. No kekahi mau papa kaapuni kiʻekiʻe, e like me HDI, no ka mea ʻaʻole maʻalahi ka electroplate ka puka makapō a i mea e hana ai i ka uea lahilahi, e hoʻoliʻiliʻi ʻia nā koi no ka mānoanoa keleawe puka, no laila aia kekahi hapa palena iki o ka mānoanoa keleawe puka. o 0.4mil a i ʻole nā ​​kikoʻī. Eia nō naʻe, aia kekahi mau hihia kūikawā, e like me nā papa kaapuni nui no nā ʻōnaehana e koi ana i ka mānoanoa o ka lua o 0.8mil a ʻoi paha ma muli o ka hui kūikawā a me nā pono pono no nā wā lōʻihi o ka hoʻohana. I ka IPC-6012, aia kahi papa mānoanoa o ka mānoanoa keleawe i ke alo o ka lua, no laila he aha ke ʻano o ka wehewehe keleawe e koi ʻia ai, e like me nā pono o ka huahana, i hōʻike hope ʻia e ka mea kūʻai aku.

PCB puka keleawe mānoanoa hae a pau keleawe mānoanoa haku mele ‘ana

ʻO ka mea aʻe kahi papa kahe maʻamau o PCB maʻamau:

PCB puka keleawe mānoanoa hae a pau keleawe mānoanoa haku mele ‘ana

PCB puka keleawe mānoanoa hae a pau keleawe mānoanoa haku mele ‘ana

Hiki iā mākou ke ʻike akāka mai ke kiʻi ʻelua, ʻo kā mākou PCB pau ka mānoanoa keleawe e ka PCB kumu keleawe mānoanoa a me ka mānoanoa papa uila a me ka uila, i ka hopena, ua pau ka mānoanoa keleawe ʻoi aku ka nui ma mua o ka waihona keleawe PCB, a ʻo mākou āpau ka PCB ka mānoanoa keleawe puka, hoʻopau ʻia i nā kaʻina hana ʻelua o ka electroplating, ʻo ia ka mānoanoa o ka lua pā plating keleawe electroplating keleawe mānoanoa a me nā kiʻi.

ʻO ka mānoanoa keleawe pau o PCB i haku ʻia o ka mānoanoa keleawe kahua o PCB a me ka mānoanoa hope loa o ka uila uila a me ka uila uila, ʻo ia hoʻi, ʻoi aku ka mānoanoa o ke keleawe keleawe ma mua o ke kumu keleawe o PCB. Hoʻopau ʻia ka mānoanoa keleawe o nā puka āpau o kā mākou PCB e ka electroplating i loko o ʻelua hana, ʻo ia hoʻi, ka mānoanoa keleawe o nā lua i uhi ʻia o ka papa holoʻokoʻa a me ka mānoanoa keleawe o nā kiʻi electroplated.

Nā huahana i hoʻopau mau ʻia 1OZ pau ka mānoanoa o ke keleawe, ke keleawe puka e like me ke kūlana IPC pae 2, ʻo ka maʻa mau he keleawe (plating pā piha) mānoanoa o 5-7um, ʻelua keleawe (plating kiʻi) mānoanoa o 13-15um, no laila ka mānoanoa o ka lua keleawe ma waena o 18 -22um, me ke kāwili ʻana a me nā kumu ʻē aʻe i hoʻokumu ʻia e ka nalo, ʻo ke keleawe puka hope loa ma kahi o 20UM.

Nā koi maʻamau no ka mānoanoa keleawe i ka lua (IPC-6012B, GJB 362A-96, QJ3103-99)

PCB puka keleawe mānoanoa hae a pau keleawe mānoanoa haku mele ‘ana

Ma o ka electroplating hole kahi loulou nui i ka hana hana PCB. I mea e ʻike ai i ka pili uila o nā pae like ʻole o ka mea hiki ke hoʻoheheʻe ʻia, pono e uhi ʻia ke keleawe me ka maikaʻi uila i ka paia o ka puka ma o ka puka. Me ka hoʻokūkū ikaika o nā huahana hopena, paʻa ia i nā koi kiʻekiʻe aʻe ma ka hilinaʻi o nā huahana PCB, a ua lilo ka mānoanoa o ka papa electroplating ma o ka puka i hoʻokahi o nā mea e ana i ka hilinaʻi o PCB. ʻO kahi mea nui e hoʻopili ana i ka mānoanoa keleawe o ka puka PCB ka hiki i ka plating hohonu o ka plating PCB.

ʻO kahi papa kuhikuhi koʻikoʻi e loiloi i ka hopena o ka plating PCB ma o ka puka ka like o ka uhi uhi keleawe i ka lua. I ka ʻoihana PCB, wehewehe ʻia ka mākaukau hohonu e like me ka lakio o ka mānoanoa uhi keleawe ma ke kikowaena o ka lua i ka mānoanoa uhi keleawe ma ka waha o ka lua.

I mea e wehewehe pono ai i ka hiki o ka plating hohonu, hoʻohana pinepine ʻia ka lakio aperture mānoanoa, ʻo ia hoʻi, ka lakio anawaena o ka mānoanoa.

ʻAʻole mānoanoa ka papa PCB akā nui ka puka, nui ka loli o ka hoʻoili uila i ke kaʻina electroplating, maikaʻi ka diffusion o ka ion i ka lua, ʻo ka hopena electroplating hohonu plating nona ka waiwai nui pinepine; Ma ka ʻaoʻao ʻē aʻe, ke kiʻekiʻe ka lākiō o ka mānoanoa i ke anawaena, e hōʻike ka paia o ka puka i ka hanana o “iwi ʻīlio”, (ke ʻano o ke keleawe mānoanoa ma ka waha a me ke keleawe lahilahi ma waenakonu o ka lua), ka plating hohonu hiki ʻilihuna o ka ʻauʻau.

Loaʻa i nā pono kūpono kiʻekiʻe hohonu hohonu:

1. Hoʻonui i ka hilinaʻi

Hoʻomaikaʻi ʻia ke kūlike o ka mānoanoa o ka papa keleawe electroplated ma ka paia puka, kahi e hāʻawi ai i kahi hōʻoia ʻoi aku ka maikaʻi no ka hopena anuanu a me ka wela o PCB i ka piʻi ʻana o ka papa aʻe a me ka hoʻohana ʻana i nā huahana hopena, i mea e pale ʻole ai i ka ʻole o ka ke kakahiaka nui, hoʻolōʻihi i ke ola lawelawe o nā huahana a hoʻomaikaʻi i ka hilinaʻi kiʻekiʻe o nā huahana.

2. Hoʻonui i ka pono hana

ʻO ke kaʻina electroplating ke kaʻina “bottleneck” i ke kaʻina hana, ka hoʻomaikaʻi ʻana o ka hiki i ka plating hohonu ke hoʻopōkole i ka manawa plating, hoʻomaikaʻi i ka hana a me ka pono.

3. E hoʻemi i nā kumukūʻai hana

Manaʻo nui nā hale hana PCB inā hoʻonui ʻia ka mana plating hohonu e 10%, hiki ke hoʻemi ʻia ke kumukūʻai waiwai ma 10%. ʻO ka pōmaikaʻi pololei o kēia mea hoʻokahi wale nō miliona yuan / makahiki, ʻaʻole e hōʻike i kahi moʻo o nā pono kīnā ʻole ma hope o ka hoʻomaikaʻi ʻana i ka maikaʻi o ka huahana.