PCB gula mānoanoa vs PCB maʻamau: hoʻomaopopo i nā ʻokoʻa

I ka honua o nā papa kaapuni paʻi (PCB), hiki i ke koho ʻana i nā mea hana a me nā kaʻina hana ke hoʻopilikia nui i ka maikaʻi a me ka hana o nā mea uila. ʻO kekahi o ia ʻano like ʻole ka PCB gula mānoanoa, e hāʻawi ana i nā pono kūʻokoʻa ma mua o nā PCB maʻamau.Maanei mākou e manaʻo e hāʻawi i kahi ʻike piha o ka PCB gula mānoanoa, e wehewehe ana i kona haku mele ʻana, nā pōmaikaʻi, a me nā ʻokoʻa mai nā PCB kuʻuna.

1.Understanding mānoanoa gula PCB

ʻO ka PCB gula mānoanoa he ʻano kūikawā o ka papa kaapuni paʻi i loaʻa kahi papa gula ʻoi aku ka mānoanoa ma luna o kona ʻili.Hoʻokumu ʻia lākou i nā ʻāpana he nui o ke keleawe a me nā mea dielectric me kahi papa gula i hoʻohui ʻia ma luna. Hana ʻia kēia mau PCB ma o ke kaʻina hana electroplating e hōʻoiaʻiʻo ai i ka pae gula i hoʻopaʻa ʻia a paʻa paʻa. ʻO ka mānoanoa gula ma kahi PCB maʻamau ma kahi o 1-2 micro inches a i ʻole 0.025-0.05 microns. I ka hoʻohālikelike ʻana, loaʻa i nā PCB gula mānoanoa ka mānoanoa o 30-120 micro inches a i ʻole 0.75-3 microns.

2.Advantages o ka manoanoa gula PCB

Hāʻawi nā PCB gula mānoanoa i nā pono he nui ma mua o nā koho maʻamau, me ka hoʻonui ʻana i ka lōʻihi, hoʻomaikaʻi i ka conductivity a me ka hana ʻoi aku ka maikaʻi.

Ka lōʻihi:
ʻO kekahi o nā pono nui o nā PCB gula mānoanoa ko lākou kūpaʻa kūʻokoʻa. Hoʻonohonoho pono ʻia kēia mau papa e kū i nā kaiapuni koʻikoʻi, e hoʻolilo iā lākou i mea kūpono no nā noi i ʻike pinepine ʻia i nā mahana wela a i ʻole nā ​​kūlana paʻakikī. Hāʻawi ka mānoanoa o ka pale gula i kahi papa o ka pale mai ka corrosion, oxidation a me nā ʻano ʻino ʻē aʻe, e hōʻoia ana i kahi ola PCB lōʻihi.

Hoʻonui i ka conductivity uila:
ʻO nā PCB gula mānoanoa he conductivity uila maikaʻi loa, e hoʻolilo iā lākou i koho mua no nā noi e koi ana i ka hoʻouna ʻana i ka hōʻailona kūpono. ʻO ka mānoanoa nui o ka pā gula e hōʻemi ana i ke kūʻē ʻana a hoʻonui i ka hana uila, e hōʻoiaʻiʻo ana i ka hoʻouna ʻana i nā hōʻailona maʻamau ma ka papa. He mea koʻikoʻi kēia no nā ʻoihana e like me ke kelepona, aerospace a me nā mea lapaʻau, kahi e koʻikoʻi ai ka lawe ʻana i ka ʻikepili pololei a hilinaʻi.

E hoʻomaikaʻi i ka solderability:
ʻO kekahi pono o nā PCB gula mānoanoa ko lākou hoʻomaikaʻi ʻana i ka solderability. ʻO ka hoʻonui ʻia ʻana o ka mānoanoa hoʻoheheʻe gula e hiki ai ke kahe ʻoi aku ka maikaʻi o ka solder a me ka pulu, e hōʻemi ana i ka pilikia o ka solder reflow i ka wā hana. Mālama kēia i nā hui solder ikaika a hilinaʻi, hoʻopau i nā hemahema a hoʻomaikaʻi i ka maikaʻi o ka huahana holoʻokoʻa.

Hoʻokaʻaʻike ola:
ʻOi aku ka lōʻihi o nā pilina uila ma nā PCB gula mānoanoa ma muli o ka hoʻonui ʻia ʻana o ka mānoanoa pale gula. Hoʻonui kēia i ka hilinaʻi pili a hoʻemi i ka hopena o ka hōʻemi ʻana o ka hōʻailona a i ʻole ka hoʻopili ʻana i ka manawa. No laila, hoʻohana nui ʻia kēia mau PCB i nā noi me nā kiʻekiʻe o ka hoʻokomo / ʻoki ʻana, e like me nā mea hoʻohui kāleka a i ʻole nā ​​modula hoʻomanaʻo, e koi ana i ka hana hoʻopili lōʻihi.

E hoʻomaikaʻi i ka pale ʻaʻahu:
Hana maikaʻi nā PCB gula mānoanoa i nā noi e koi ai i ka lole a me ka waimaka. Hāʻawi ka mānoanoa hoʻonui o ka pale gula i kahi pale pale e kōkua i ka pale ʻana i ka ʻōpala a me nā hopena o ka hoʻohana pinepine ʻana. He mea kūpono kēia no nā mea hoʻohui, touchpads, pihi a me nā mea ʻē aʻe e pili ana i ka pili kino mau, e hōʻoiaʻiʻo ana i ko lākou ola lōʻihi a me ka hana mau.

E hōʻemi i ka nalowale hōʻailona:
ʻO ka poho hōʻailona he pilikia maʻamau i nā noi alapine kiʻekiʻe. Eia nō naʻe, hāʻawi nā PCB gula mānoanoa i kahi hopena kūpono e hiki ke hōʻemi i ka nalowale o ka hōʻailona ma muli o kā lākou conductivity hoʻonui. Hōʻike kēia mau PCB i ke kūpaʻa haʻahaʻa e hōʻoia i ka pono o ka hōʻailona hōʻailona, ​​e hōʻemi i ka nalowale o ka lawe ʻana i ka ʻikepili a hoʻonui i ka pono o ka ʻōnaehana. No laila, hoʻohana nui ʻia lākou i nā ʻoihana e like me ke kelepona, nā lako uila, a me nā mea hana kiʻekiʻe.

3. ʻO ke koʻikoʻi o ka hoʻonui ʻana i ka mānoanoa pale gula no nā PCB gula mānoanoa:

ʻO ka mānoanoa nui o ka uhi gula ma nā PCB gula mānoanoa e lawelawe i nā kumu nui.ʻO ka mea mua, hāʻawi ia i ka pale hou aku i ka oxidation a me ka corrosion, e hōʻoiaʻiʻo ana i ka hilinaʻi lōʻihi a me ke kūpaʻa ʻoiai i nā wahi paʻakikī. Hana ʻia ka pale gula mānoanoa ma ke ʻano he mea pale, e pale ana i nā hopena kemika ma waena o nā ʻāpana keleawe i lalo a me ka lewa o waho, ʻoi aku ka nui inā ʻike ʻia i ka makū, ka haʻahaʻa, a me nā mea haumia ʻoihana.

ʻO ka lua, hoʻonui ka papa gula ʻoi aku ka nui o ka conductivity a me ka hiki ke hoʻouna i nā hōʻailona o ka PCB.ʻO ke gula kahi mea hoʻokele uila maikaʻi loa, ʻoi aku ka maikaʻi ma mua o ke keleawe i hoʻohana mau ʻia no nā ala conductive i nā PCB maʻamau. Ma ka hoʻonui ʻana i ka ʻike gula ma ka ʻili, hiki i nā PCB gula mānoanoa ke hoʻokō i ka resistivity haʻahaʻa, e hōʻemi ana i ka nalowale o ka hōʻailona a me ka hōʻoia ʻana i ka hana ʻoi aku ka maikaʻi, ʻoi aku ka nui o nā noi kiʻekiʻe a i ʻole nā ​​​​mea e pili ana i nā hōʻailona haʻahaʻa.

Eia kekahi, hāʻawi nā ʻāpana gula ʻoi aku ka maikaʻi o ka solderability a me kahi ʻoi aku ka ikaika o ke kau ʻana.Loaʻa i ke gula ka solderability maikaʻi loa, e ʻae ai i nā hui solder hilinaʻi i ka wā e hui ai. He mea koʻikoʻi kēia hiʻohiʻona no ka mea inā nāwaliwali a ʻaʻohe ʻano like ʻole nā ​​hono solder, hiki iā ia ke hana i ka pau ʻole o ka pōʻai. ʻO ka hoʻonui ʻia ʻana o ka mānoanoa gula e hoʻomaikaʻi ai i ka lōʻihi o ka mīkini, e hana ana i nā PCB gula mānoanoa i ʻoi aku ka maʻalahi o ka ʻaʻahu a me ka waimaka a ʻoi aku ka pale ʻana i ke koʻikoʻi mechanical a me ka haʻalulu.

He mea pono e hoʻomaopopo i ka hoʻonui ʻia o ka mānoanoa o ka papa gula ma nā PCB gula mānoanoa e lawe pū mai i nā kumukūʻai kiʻekiʻe ke hoʻohālikelike ʻia i nā PCB maʻamau.Pono ke kaʻina hana hoʻoheheʻe gula nui i ka manawa hou, nā kumuwaiwai a me ka ʻike, e hoʻonui ai i nā lilo hana. Eia nō naʻe, no nā noi e koi ana i ka ʻoi aku ka maikaʻi, hilinaʻi a me ka lōʻihi, ʻoi aku ka nui o ka hoʻopukapuka ʻana i nā PCB gula mānoanoa ma mua o nā pilikia a me nā kumukūʻai e pili ana i ka hoʻohana ʻana i nā PCB maʻamau.

4. ʻO ka ʻokoʻa ma waena o PCB gula mānoanoa a me PCB maʻamau:

Hana ʻia nā PCB maʻamau i nā mea epoxy me kahi ʻāpana keleawe ma kekahi a i ʻole nā ​​ʻaoʻao ʻelua o ka papa. Hoʻopili ʻia kēia mau ʻāpana keleawe i ka wā o ke kaʻina hana e hana i ka circuitry pono. Hiki ke ʻokoʻa ka mānoanoa o ka papa keleawe ma muli o ka noi, akā maʻamau i ka laulā 1-4 oz.

ʻO ka PCB gula mānoanoa, e like me ka manaʻo o ka inoa, he ʻoi aku ka mānoanoa o ka pale gula i hoʻohālikelike ʻia me ka PCB maʻamau. He 20-30 micro inches (0.5-0.75 microns) ka mānoanoa o nā PCB maʻamau, aʻo nā PCB gula mānoanoa he 50-100 micro inches (1.25-2.5 microns).

ʻO nā ʻokoʻa nui ma waena o nā PCB gula mānoanoa a me nā PCB maʻamau ʻo ka mānoanoa o ka papa gula, ka paʻakikī o ka hana ʻana, ke kumu kūʻai, nā wahi noi, a me ka hoʻohana palena ʻia i nā kaiapuni wela.

Mānoanoa papa gula:
ʻO ka ʻokoʻa nui ma waena o ka PCB gula mānoanoa a me ka PCB maʻamau ka mānoanoa o ka papa gula. ʻOi aku ka mānoanoa o ka PCB gula ma mua o ka PCB maʻamau. Kōkua kēia mānoanoa hou e hoʻomaikaʻi i ka lōʻihi o ka PCB a me ka hana uila. Hāʻawi ka ʻāpana gula mānoanoa i kahi uhi pale e hoʻonui ai i ka pale ʻana o ka PCB i ka corrosion, oxidation a me ka lole. ʻO kēia ka mea e ʻoi aku ka paʻa o ka PCB i nā kaiapuni paʻakikī, e hōʻoia ana i ka hana hilinaʻi lōʻihi. ʻOi aku ka maikaʻi o ka hoʻouna ʻana i nā hōʻailona. ʻOi aku ka maikaʻi o kēia i nā noi e koi ana i ka hoʻouna ʻana i ka hōʻailona kiʻekiʻe a i ʻole ka wikiwiki wikiwiki, e like me ke kelepona, nā mea lapaʻau, a me nā ʻōnaehana aerospace.
Koina:
Ke hoʻohālikelike ʻia me ka PCB maʻamau, ʻoi aku ka kiʻekiʻe o ke kumu kūʻai o ka PCB gula mānoanoa. Loaʻa kēia kumukūʻai kiʻekiʻe mai ke kaʻina hana plating e koi ana i nā mea gula hou e hoʻokō i ka mānoanoa i makemake ʻia. Eia nō naʻe, ʻoi aku ka hilinaʻi nui a me ka hana o nā PCB gula mānoanoa e hōʻoiaʻiʻo i ke kumu kūʻai hou aku, ʻoi aku hoʻi i nā noi kahi e hoʻokō ʻia ai nā koi koi.
Nā wahi noi:
Hoʻohana nui ʻia nā PCB maʻamau i nā ʻoihana like ʻole, me nā mea uila uila, nā ʻōnaehana automotive a me nā mea hana ʻoihana. Ua kūpono lākou no nā noi kahi i hilinaʻi nui ʻole ai ka mea nui. ʻO nā PCB gula mānoanoa, ma ka ʻaoʻao ʻē aʻe, hoʻohana nui ʻia i nā kula ʻoihana e koi ai i ka hilinaʻi a me ka hana. ʻO nā hiʻohiʻona o kēia mau wahi noi e pili ana i ka ʻoihana aerospace, nā mea lapaʻau, nā lako kaua, a me nā ʻōnaehana kelepona. Ma kēia mau wahi, hilinaʻi nā hana koʻikoʻi i nā ʻāpana uila hilinaʻi a kiʻekiʻe, no laila ʻo nā PCB gula mānoanoa ke koho mua.
Paʻakikī o ka hana ʻana:
Ke hoʻohālikelike ʻia me nā PCB maʻamau, ʻoi aku ka paʻakikī o ka hana ʻana o nā PCB gula mānoanoa. Pono e mālama pono ʻia ke kaʻina hana electroplating no ka hoʻokō ʻana i ka mānoanoa papa gula i makemake ʻia. Hoʻonui kēia i ka paʻakikī a me ka manawa i koi ʻia no ke kaʻina hana. He mea koʻikoʻi ka mana pololei o ke kaʻina hana plating no ka mea hiki i nā ʻano like ʻole o ka mānoanoa papa gula ke hoʻopilikia i ka hana PCB a me ka hilinaʻi. Hāʻawi kēia kaʻina hana meticulous i ka maikaʻi a me ka hana o nā PCB gula mānoanoa.
Kūpono palena ʻole no nā kaiapuni wela kiʻekiʻe:
ʻOiai ke hana maikaʻi nei nā PCB gula mānoanoa i ka hapa nui o nā kaiapuni, ʻaʻole paha lākou ke koho kūpono loa no nā noi wela kiʻekiʻe. Ma lalo o ke kūlana wela kiʻekiʻe loa, hiki i nā papa gula mānoanoa ke hoʻohaʻahaʻa a delaminate paha, e pili ana i ka hana holoʻokoʻa o ka PCB.
I kēia hihia, ʻoi aku ka maikaʻi o nā lāʻau lapaʻau ʻē aʻe e like me ka tin immersion (ISn) a i ʻole ke kala immersion (IAg). Hāʻawi kēia mau lāʻau lapaʻau i ka pale kūpono i nā hopena o nā wela kiʻekiʻe me ka ʻole o ka hoʻopili ʻana i ka hana o ka PCB.

Hiki i ke koho ʻana i nā mea PCB ke hoʻopilikia nui i ka maikaʻi a me ka hana o nā mea uila. Hāʻawi nā PCB gula mānoanoa i nā pono kūʻokoʻa e like me ka hoʻomaikaʻi ʻana i ka lōʻihi, hoʻomaikaʻi i ka solderability, maikaʻi ka uila conductivity, ʻoi aku ka hilinaʻi pili, a me ka lōʻihi o ke ola.ʻO kā lākou mau pōmaikaʻi e hōʻoiaʻiʻo i ke kumukūʻai kiʻekiʻe o ka hana a hoʻolilo iā lākou i kūpono no nā ʻoihana kūikawā e hoʻokaʻawale i ka hilinaʻi, e like me ka aerospace, nā mea lapaʻau, nā mea kaua, a me nā ʻōnaehana kelepona. ʻO ka hoʻomaopopo ʻana i ka haku mele ʻana, nā pono, a me nā ʻokoʻa ma waena o nā PCB gula mānoanoa a me nā PCB maʻamau he mea koʻikoʻi ia no nā ʻenekinia, nā mea hoʻolālā, a me nā mea hana e ʻimi nei e hoʻokō i ka hana a me ka lōʻihi o kā lākou mau mea uila. Ma ka hoʻohana ʻana i nā ʻano kūʻokoʻa o nā PCB gula mānoanoa, hiki iā lākou ke hōʻoia i nā huahana hilinaʻi a kiʻekiʻe no kā lākou mea kūʻai.