ʻO ka chip ka mea a mākou i kapa ai ʻo IC, kahi i haku ʻia me ke kumu aniani a me ka ʻeke o waho, liʻiliʻi e like me ka transistor, a ʻo kā mākou kamepiula CPU ka mea i kapa ʻia ʻo IC.ʻO ka maʻamau, hoʻokomo ʻia ia ma ka PCB ma o nā pine (ʻo ia hoʻi, ʻO ka papa kaapuni āu i ʻōlelo ai), i māhele ʻia i nā pūʻulu leo like ʻole, me ka plug pololei a me ka patch.Aia kekahi mau mea ʻaʻole i hoʻokomo pono ʻia ma ka PCB, e like me kā mākou kamepiula CPU.No ka maʻalahi o ka hoʻololi ʻana, ua hoʻopaʻa ʻia ma luna o ia ma o nā kumu a i ʻole nā pine.Hoʻopaʻa pololei ʻia kahi puʻupuʻu ʻeleʻele, e like me ka wati uila ma ka PCB.No ka laʻana, ʻaʻohe PCB kūpono o kekahi poʻe hoʻokipa uila, no laila hiki ke kūkulu pono i kahi hale hoʻoheheʻe mai ka uea lele lele.
Pono e "hoʻokomo ʻia" ka chip ma ka papa kaapuni, a i ʻole "soldering" e pololei.E kūʻai ʻia ka chip ma ka papa kaapuni, a hoʻokumu ka papa kaapuni i ka pilina uila ma waena o ka chip a me ka chip ma o ka "trace".ʻO ka papa kaapuni ka mea lawe i nā ʻāpana, ʻaʻole ia e hoʻoponopono wale i ka chip akā e hōʻoiaʻiʻo i ka pili uila a hōʻoia i ka hana paʻa o kēlā me kēia chip.
pin ʻokiʻoki
He nui nā pine o ka chip, a hoʻokumu pū ka chip i kahi pilina pili uila me nā ʻāpana ʻē aʻe, nā ʻāpana, a me nā kaapuni ma o nā pine.ʻOi aku ka nui o nā hana a kahi chip, ʻoi aku ka nui o nā pine.E like me nā ʻano pinout ʻokoʻa, hiki ke hoʻokaʻawale ʻia i loko o ka pūʻolo LQFP series, pūʻolo pūʻulu QFN, pūʻolo SOP pūʻulu, pūʻulu BGA a me nā pūʻulu DIP i loko o ka laina.E like me ka mea i hōʻike ʻia ma lalo nei.
Papa PCB
ʻO ka ʻaila ʻōmaʻomaʻo nā papa kaapuni maʻamau, i kapa ʻia nā papa PCB.Ma waho aʻe o ka ʻōmaʻomaʻo, ʻo nā kala maʻamau i hoʻohana ʻia he uliuli, ʻeleʻele, ʻulaʻula, etc. Aia nā pads, traces, a me nā vias ma ka PCB.ʻO ka hoʻonohonoho ʻana o nā pads e kūlike me ka hoʻopili ʻana o ka chip, a hiki ke kūʻai like ʻia nā ʻāpana a me nā pads e like me ke kūʻai ʻana;ʻoiai nā traces a me nā vias e hāʻawi i kahi pilina pili uila.Hōʻike ʻia ka papa PCB ma ke kiʻi ma lalo nei.
Hiki ke hoʻokaʻawale ʻia nā papa PCB i nā papa ʻelua, nā papa ʻehā, nā papa ʻeono, a ʻoi aku ka nui o nā papa e like me ka helu o nā papa.ʻO nā papa PCB maʻamau ka nui o nā mea FR-4, a ʻo ka mānoanoa maʻamau ʻo 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.6mm, 2.0mm, etc. He papa kaapuni paakiki keia, a o kekahi. he mea palupalu, i kapaia he papa kaapuni hikiwawe.No ka laʻana, ʻo nā uwea maʻalahi e like me nā kelepona paʻalima a me nā kamepiula he mau papa kaapuni maʻalahi.
mea hana wiliwili
No ke kūʻai ʻana i ka chip, hoʻohana ʻia kahi mea hana wili.Inā he manual soldering, pono ʻoe e hoʻohana i ka hao hao, solder wire, flux a me nā mea hana ʻē aʻe.He kūpono ke kuʻi lima lima no ka liʻiliʻi o nā laʻana, akā ʻaʻole kūpono no ka hoʻoheheʻe nui ʻana, no ka haʻahaʻa haʻahaʻa, ʻaʻohe kūlike, a me nā pilikia like ʻole e like me ka nalo ʻana o ka welding a me ka hoʻopunipuni.I kēia manawa ke piʻi aʻe nei ke kiʻekiʻe o ka mechanization, a ʻo ka hoʻoheheʻe ʻana i ka ʻāpana chip SMT kahi kaʻina hana ʻoihana maʻamau.E pili ana kēia kaʻina hana i nā mīkini palaki, nā mīkini hoʻokomo, nā umu reflow, nā hoʻāʻo AOI a me nā mea hana ʻē aʻe, a ʻoi loa ke kiʻekiʻe o ka automation., He maikaʻi loa ka kūlike, a he haʻahaʻa loa ka hapa hapa, e hōʻoiaʻiʻo ana i ka hoʻouna nui ʻana o nā huahana uila.Hiki ke ʻōlelo ʻia ʻo SMT ka ʻoihana ʻoihana o ka ʻoihana uila.
ʻO ke kaʻina hana kumu o SMT
ʻO SMT kahi kaʻina hana maʻamau, e pili ana i ka PCB a me ka nānā ʻana a me ka hōʻoia ʻana, ka hoʻouka ʻana i ka mīkini hoʻokomo, ka paʻi solder/ka pulu ʻulaʻula, ka hoʻokomo ʻana i ka mīkini, ka umu reflow, ka nānā ʻana o AOI, ka hoʻomaʻemaʻe a me nā kaʻina hana ʻē aʻe.ʻAʻole hiki ke hana hewa i kekahi loulou.ʻO ka loulou nānā mea komo e hōʻoia nui i ka pololei o nā mea.Pono e hoʻolālā ʻia ka mīkini hoʻokomo e hoʻoholo i ke kau ʻana a me ke kuhikuhi o kēlā me kēia ʻāpana.Hoʻopili ʻia ka paʻi solder i nā pad o ka PCB ma o ka mesh kila.ʻO luna a me ka reflow soldering ke kaʻina hana o ka hoʻomehana ʻana a me ka hoʻoheheʻe ʻana i ka solder paste, a ʻo AOI ke kaʻina nānā.
E kūʻai ʻia ka chip ma ka papa kaapuni, a ʻaʻole hiki i ka papa kaapuni ke pāʻani wale i ke kuleana o ka hoʻoponopono ʻana i ka chip akā e hōʻoia pū i ka pilina uila ma waena o nā chip.
Ka manawa hoʻouna: Mei-09-2022