Introduction to Solder Mask
ʻO ka pale pale pale he soldermask, e pili ana i ka ʻāpana o ka papa kaapuni e pena ʻia me ka ʻaila ʻōmaʻomaʻo. ʻO kaʻoiaʻiʻo, hoʻohana kēia mask solder i kahi hopena maikaʻi ʻole, no laila ma hope o ke ʻano o ke ʻano o ka solder mask i palapala ʻia i ka papa, ʻaʻole i pena ʻia ka solder mask me ka ʻaila ʻōmaʻomaʻo, akā ʻike ʻia ka ʻili keleawe. ʻO ka mea maʻamau i mea e hoʻonui ai i ka mānoanoa o ka ʻili keleawe, hoʻohana ʻia ka mask solder e kākau i nā laina e wehe i ka ʻaila ʻōmaʻomaʻo, a laila hoʻohui ʻia ka tin e hoʻonui i ka mānoanoa o ka uea keleawe.
Koi no ka solder mask
He mea koʻikoʻi ka mask solder i ka hoʻomalu ʻana i nā hemahema solder i ka hoʻoheheʻe hou ʻana. Pono nā mea hoʻolālā PCB e hōʻemi i ka spacing a i ʻole nā ea āpau a puni nā pā.
ʻOiai ʻoi aku ka nui o nā ʻenekini kaʻina hana e hoʻokaʻawale i nā hiʻohiʻona pad a pau ma ka papa me kahi mask solder, pono ka noʻonoʻo pono ʻana i ka spacing pine a me ka nui o ka pā o nā ʻāpana fine-pitch. ʻOiai hiki ke ʻae ʻia ka wehe ʻana o ka mask solder a i ʻole nā puka makani i hoʻopaʻa ʻole ʻia ma nā ʻaoʻao ʻehā o ka qfp, ʻoi aku ka paʻakikī o ka hoʻomalu ʻana i nā alahaka kūʻai ma waena o nā pine ʻāpana. No ka solder mask o bga, nui nā hui e hāʻawi i ka solder mask ʻaʻole i hoʻopā i nā pads, akā uhi i nā hiʻohiʻona ma waena o nā pads e pale ai i nā alahaka solder. ʻO ka hapa nui o nā PCB mauna i uhi ʻia me kahi mask solder, akā inā ʻoi aku ka mānoanoa o ka mask solder ma mua o 0.04mm, hiki ke hoʻopili i ka hoʻohana ʻana i ka paʻi solder. ʻO nā PCB mauna ʻili, ʻoi aku ka poʻe e hoʻohana ana i nā ʻāpana maikaʻi, pono i kahi mask solder photosensitive haʻahaʻa.
Hana hana
Pono e hoʻohana ʻia nā mea huna solder ma o ke kaʻina wai wai a i ʻole ka lamination film maloʻo. Hāʻawi ʻia nā mea hoʻoheheʻe kiʻiʻoniʻoni maloʻo maloʻo i ka mānoanoa o 0.07-0.1mm, hiki ke kūpono i kekahi mau huahana mauna ʻili, akā ʻaʻole ʻōlelo ʻia kēia mea no nā noi kokoke. Hāʻawi nā ʻoihana liʻiliʻi i nā kiʻiʻoniʻoni maloʻo i lawa e kūpono i nā kūlana pitch maikaʻi, akā aia kekahi mau ʻoihana e hiki ke hāʻawi i nā lako mask solder mask wai. ʻO ka maʻamau, ʻoi aku ka nui o ka wehe ʻana o ka solder mask ma 0.15mm ma mua o ka pad. Hāʻawi kēia i kahi āpau o 0.07mm ma ka lihi o ka pad. ʻO nā mea waiwai haʻahaʻa haʻahaʻa wai photosensitive solder mask mea waiwai a maʻamau i kuhikuhi ʻia no nā noi mauna ʻili e hāʻawi i ka nui o nā hiʻohiʻona a me nā āpau.
Introduction to soldering layer
Hoʻohana ʻia ka ʻāpana kūʻai no ka ʻeke SMD a pili i nā pad o nā mea SMD. I ka hana SMT, hoʻohana pinepine ʻia kahi pā kila, a ua kuʻi ʻia ka PCB e pili ana i nā pads, a laila kau ʻia ka paʻi solder ma ka pā kila. Aia ka PCB ma lalo o ka pā kila, lele ka paʻi solder, a aia wale nō ma kēlā me kēia pā Hiki ke hoʻopaʻa ʻia me ka solder, no laila ʻaʻole pono e ʻoi aku ka nui o ka solder mask ma mua o ka nui o ka pad, ʻoi aku ka liʻiliʻi a i ʻole like me ka. nui pad maoli.
ʻO ka pae i makemake ʻia ua ʻaneʻane like me nā ʻāpana mauna o luna, a penei nā mea nui:
1. BeginLayer: ThermalRelief a me AnTIPad he 0.5mm ka nui ma mua o ka nui maoli o ka papa maʻamau
2. EndLayer: ThermalRelief a me AnTIPad he 0.5mm ka nui ma mua o ka nui maoli o ka papa maʻamau
3. DEFAULTINTERNAL: papa waena
ʻO ke kuleana o ka solder mask a me ka flux layer
ʻO ka papa huna solder ka mea nui e pale ai i ka pahu keleawe o ka papa kaapuni mai ka ʻike pono ʻana i ka lewa a pāʻani i kahi hana pale.
Hoʻohana ʻia ka papa kuʻi no ka hana ʻana i ke kila kila no ka hale hana kila, a hiki i ka mesh kila ke hoʻokomo pololei i ka paʻi solder ma luna o nā pad patch e pono ke kūʻai ʻia i ka wā tinning.
ʻO ka ʻokoʻa ma waena o ka PCB soldering layer a me solder mask
Hoʻohana ʻia nā papa ʻelua no ka hoʻoheheʻe ʻana. ʻAʻole ia he manaʻo ua soldered kekahi a he ʻaila ʻōmaʻomaʻo kekahi; aka:
1. ʻO ke ʻano o ka solder mask layer ʻo ia ka wehe ʻana i ka puka makani ma ka ʻaila ʻōmaʻomaʻo o ka mask solder holoʻokoʻa, ʻo ke kumu e ʻae i ka welding;
2. ʻO ka mea maʻamau, pono e pena ʻia ka wahi me ka ʻole solder mask me ka ʻaila ʻōmaʻomaʻo;
3. Hoʻohana ʻia ka ʻāpana kūʻai no ka hōʻailona SMD.