Nā nīnau i nīnau pinepine ʻia

He kūpono nā PCB keleawe kaumaha no nā lako mana kiʻekiʻe, nā kaʻa, nā pale kaua a me nā noi koa, nā mea lapaʻau, a me nā wahi ʻē aʻe he nui.

ʻOiai hiki ke hoʻohana ʻia ke keleawe kaumaha i nā PCB multi-layer, aia kekahi mau palena. ʻO ka mānoanoa o ke keleawe i hoʻonui ʻia e hiki ke paʻakikī i ka hoʻokō ʻana i ka hoʻopaʻa inoa maikaʻi ma waena o nā papa. Eia kekahi, piʻi nui ka mānoanoa o ka papa holoʻokoʻa me ke keleawe kaumaha ma nā papa he nui, hiki ke hoʻopilikia i nā kaʻina hana e like me ka ʻeli ʻana a me ka uhi ʻana i nā lua.

ʻAe, hiki ke hoʻolālā ʻia nā PCB keleawe kaumaha no nā ʻāpana SMT. Eia nō naʻe, pono nā noʻonoʻo kūikawā no ka hoʻopili ʻana i ka solder paste, ke kau ʻana o nā ʻāpana, a me nā ʻikepili reflow ma muli o ka hoʻonui ʻia o ka nui o ka thermal o nā papa keleawe kaumaha. Pono paha nā ʻāpana SMT fine-pitch i ka mānoanoa keleawe maʻamau i ko lākou mau wahi kau.

Ma keʻano laulā, ʻo kēlā me kēia mānoanoa keleawe ma luna o 3 oz (105 µm) ua manaʻo ʻia he keleawe kaumaha. Eia nō naʻe, hiki ke ʻokoʻa ka wehewehe ʻana ma muli o ka noi a me ka ʻoihana. Manaʻo paha kekahi mau mea hana he 3 oz ke kumu hoʻomaka no ke keleawe kaumaha, aʻo kekahi poʻe e hoʻonohonoho i ka paepae ma 4 oz a ʻoi aku paha.

ʻOi aku ke kumukūʻai o nā PCB keleawe kaumaha ma mua o nā PCB maʻamau ma muli o kekahi mau kumu: Hoʻonui ʻia ke kumukūʻai o nā mea maka (ʻoi aku ke keleawe) ʻOi aku ka lōʻihi o ka manawa hana, ʻoi aku hoʻi no ke kālai ʻana ʻOi aku ka nui o ka ʻaʻahu o nā mea hana i ka wā o ka hana ʻana Nā kaʻina hana hana paʻakikī Hiki ke emi nā hua ma muli o nā ʻae ʻana o ka hana ʻana. Eia nō naʻe, hiki ke hoʻopau ʻia ke kumukūʻai i hoʻonui ʻia e ka hana i hoʻomaikaʻi ʻia, ka hilinaʻi, a me ka hiki ke hōʻemi i ka helu o nā papa i kekahi mau hoʻolālā.

Wahi a nā hoʻohana like ʻole o ka PCB, ʻokoʻa ka mānoanoa o ke keleawe i koi ʻia. E like me nā PCB no nā huahana mea kūʻai aku a me ke kamaʻilio maʻamau, pono nā mānoanoa keleawe o 0.5oz, 1oz, a me 2oz; no nā huahana uila e lawe ana i ke au kiʻekiʻe, e like me nā huahana voltage kiʻekiʻe, nā papa lako mana, a me nā huahana ʻē aʻe, pono nā PCB ma mua o 3oz o ke keleawe mānoanoa. I ka pōkole, koho i ka mānoanoa keleawe kūpono e like me nā koi o ka huahana.

Aia hoʻokahi papa keleawe i loko o kahi PCB ʻaoʻao hoʻokahi. Aia ʻelua papa keleawe i loko o kahi PCB ʻaoʻao pālua. Aia ma mua o ʻelua papa keleawe i loko o kahi PCB multi-layer. No ka laʻana, aia ʻehā papa keleawe i loko o kahi PCB 4-layer.

ʻAʻohe ʻokoʻa ma waena o kēia mau huaʻōlelo ʻelua, ʻo ia hoʻi nā papa kaapuni i paʻi ʻia me ka mānoanoa keleawe 3oz a ʻoi aku paha. Hoʻohana nui ʻia nā papa keleawe PCB mānoanoa a i ʻole nā ​​​​papa keleawe kaumaha i nā papa uila mana kiʻekiʻe.

ʻOi aku ke kaumaha keleawe maʻamau no nā PCB keleawe kaumaha ma mua o 2 auneke (70um). Akā hiki iā mākou ke hana i ka mānoanoa keleawe kiʻekiʻe e like me ka PCB keleawe 4 oz, PCB keleawe 10 oz a me ka PCB keleawe a hiki i ka 20 oz.

Pono e hoʻohana i ke keleawe RTF.

ʻOi aku ka maikaʻi o ka hoʻopiha ʻana i ka lamination

Nā substrates conductivity wela kiʻekiʻe

E hoʻouka i kahi keleawe nui i loko o nā kiko keleawe

E mālama i ke koena keleawe kūpono

E hoʻonui i ka laulā a me ka mamao o ke kaha kiʻi

E hoʻonui i ka hoʻolālā pad o ka papa o loko

Kū i nā au hou aʻe a me nā voltages kiʻekiʻe

Hilinaʻi kiʻekiʻe

ʻOi aku ka paʻa i ka wela, ke anu, a me ka pala

Pōʻai ola lōʻihi

Ma Richfulljoy, ʻo nā papa kaapuni i paʻi ʻia me 0.33oz, 0.5oz, 1oz a me 2oz he mānoanoa keleawe maʻamau. No laila, manaʻo mākou ʻaʻole he papa kaapuni keleawe kaumaha ka 2oz PCB, a manaʻo mākou i nā PCB me 3oz a ʻoi aku ka mānoanoa keleawe he mau papa keleawe kaumaha.