Pehea e hoʻomaopopo ai i ka pau ʻana o ka ʻili mai PCB kala?

Mai ka ʻili o ka PCB, ʻekolu mau kala nui: ke gula, ke kālā a me ka ʻulaʻula māmā. ʻO ka PCB gula ke kumu kūʻai nui loa, ʻo ke kālā ka mea liʻiliʻi loa, a ʻo ka ʻulaʻula māmā ka mea liʻiliʻi loa.

Hiki iā ʻoe ke ʻike inā e ʻoki ana ka mea hana i nā kihi mai ke kala ʻili.

Eia kekahi, ʻo ke kaapuni i loko o ka papa kaapuni he keleawe maʻemaʻe. Hoʻopili maʻalahi ʻia ke keleawe ke ʻike ʻia i ka lewa, no laila pono e loaʻa i ka papa o waho ka papa pale i ʻōlelo ʻia ma luna.

Gold

ʻŌlelo kekahi poʻe he keleawe ke gula, he hewa ia.

E ʻoluʻolu e nānā i ke kiʻi gula i uhi ʻia ma ka papa kaapuni e like me ka mea i hōʻike ʻia ma lalo nei.

He gula maoli ka papa kaapuni gula nui loa. ʻOiai he lahilahi loa ia, ʻoi aku ka nui o ka 10% o ke kumukūʻai o ka papa.

ʻElua mau pōmaikaʻi i ka hoʻohana ʻana i ke gula, hoʻokahi kūpono no ka wili, a ʻo kekahi he anti-corrosion.

E like me ka mea i hōʻike ʻia ma ke kiʻi ma lalo nei, ʻo ia ka manamana gula o ka lāʻau hoʻomanaʻo 8 makahiki i hala. He gula alohilohi mau.

Hoʻohana nui ʻia ka papa gula-plated i nā pads board component, nā manamana gula, nā shrapnel connector, etc.

Inā ʻike ʻoe he kālā kekahi mau papa kaapuni, pono e ʻoki ʻia. Kapa mākou iā ia he “hōʻemi kumukūʻai”.

ʻO ka mea maʻamau, ʻo nā motherboards kelepona paʻa he gula-plated, akā ʻaʻole i uhi ʻia nā motherboards computer a me nā papa kikohoʻe liʻiliʻi.

E ʻoluʻolu e nānā i ka papa iPhone X ma lalo nei, ua uhi ʻia nā ʻāpana i ʻike ʻia.

kala

He gula ke gula, he kala ke kala? ʻAʻole naʻe, he tini.

Kapa ʻia ka papa kālā ʻo ka papa HASL. ʻO ka pīpī ʻana i ka tin ma ka ʻaoʻao o waho o ke keleawe kōkua pū kekahi i ke kūʻai ʻana, akā ʻaʻole paʻa e like me ke gula.

ʻAʻohe hopena i nā ʻāpana i hoʻopili mua ʻia o ka papa HASL. Eia nō naʻe, inā ʻike ʻia ka pad i ka lewa no ka manawa lōʻihi, e like me nā pads grounding a me nā kumu, ua maʻalahi ka oxidize a me ka ʻōpala, e hopena i ka hoʻopili maikaʻi ʻana.

ʻO nā huahana kikohoʻe liʻiliʻi a pau he mau papa HASL. Hoʻokahi wale nō kumu: cheap.

ʻO kaʻulaʻula

ʻO OSP (Organic Solderability Preservative), he mea kūlohelohe, ʻaʻole metala, no laila ʻoi aku ka maikaʻi ma mua o ke kaʻina HASL.

ʻO ka hana wale nō o ke kiʻi ʻoniʻoni ʻo ia ka hōʻoia ʻana ʻaʻole e hoʻoneʻe ʻia ka foil keleawe kūloko ma mua o ke kūʻai ʻana.

Ke evaporates ke kiʻiʻoniʻoni, e evaporate a mehana. A laila hiki iā ʻoe ke hoʻohui i ka uea keleawe a me ka ʻāpana.

Akā, ua maʻalahi ka ʻino. Inā ʻike ʻia ka papa OSP i ka lewa ma mua o 10 mau lā, ʻaʻole hiki ke kūʻai ʻia.

Nui nā kaʻina OSP ma ka motherboard computer. No ka nui loa o ka nui o ka papa kaapuni.