PCB n’elu ọgwụgwọ technology na-ezo aka usoro nke artificially akpụ a elu oyi akwa na PCB components na eletriki njikọ ihe dị iche na n’ibu, anụ ahụ na chemical Njirimara nke mkpụrụ. Nzube ya bụ iji hụ na ezi solderability ma ọ bụ eletriki Njirimara nke PCB. N’ihi na ọla kọpa na-eche na ọ dị n’ụdị oxides na ikuku, nke na-emetụta n’ụzọ dị ukwuu solderability na eletriki Njirimara nke PCB, ọ dị mkpa ịrụ n’elu ọgwụgwọ na PCB.

Ka ọ dị ugbu a, usoro ọgwụgwọ elu nke a na-ahụkarị bụ ndị a:

1. Ịkwado ikuku na-ekpo ọkụ

N’elu PCB ka a na-ekpuchi ya na tin-lead a wụrụ awụ ma jiri ikuku na-ekpo ọkụ kpụ ọkụ n’ọnụ (gbara ewepụghị) iji mepụta oyi akwa mkpuchi nke na-eguzogide ọla kọpa oxidation ma na-enye ezigbo solderability. N’oge ọkwa ikuku na-ekpo ọkụ, ihe na-ere ahịa na ọla kọpa na-etolite ngwakọta ọla kọpa-tin na nkwụsịtụ, na ọkpụrụkpụ dị ihe dịka 1 ruo 2 mils;

2. Organic Anti-oxidation (OSP)

N’elu ọla kọpa na-adịghị ọcha, a na-eji kemịkal na-eto ihe nkiri organic. Nke a oyi akwa nke ihe nkiri nwere mgbochi oxidation, okpomọkụ ujo na-eguzogide, na mmiri na-eguzogide iji chebe ọla kọpa elu si nchara (oxidation ma ọ bụ sulfidation, wdg) na a nkịtị gburugburu ebe obibi; n’otu oge ahụ, ọ ga-adị mfe na-enyere aka na-esote welding elu okpomọkụ A na-ewepụ ngwa ngwa ngwa ngwa iji kwado ịgbado ọkụ;

3. Electroless nickel gold

A na-ekechi akwa oyi akwa nke nickel-gold alloy nwere ezigbo ọkụ eletrik n’elu ọla kọpa ma nwee ike ichekwa PCB ogologo oge. N’adịghị ka OSP, nke a na-eji naanị dị ka ihe mgbochi mgbochi nchara, ọ nwere ike ịba uru na ogologo oge iji PCB na-arụ ọrụ ọkụ eletrik. Na mgbakwunye, ọ nwekwara nnabata na gburugburu ebe obibi nke usoro ọgwụgwọ elu ndị ọzọ enweghị;

4. Chemical immersion Silver

N’etiti OSP na electroless nickel/mikpu ọla edo, usoro a dị mfe na ngwa ngwa. Mgbe ekpughere ya na okpomọkụ, iru mmiri na mmetọ, ọ ka nwere ike inye ọrụ eletrik dị mma ma nọgide na-enwe ezigbo solderability, ma ọ ga-efunahụ ya. N’ihi na ọ dịghị nickel n’okpuru ọlaọcha oyi akwa, imikpu ọlaọcha enweghị ezigbo anụ ahụ ike nke electroless nickel / imikpu gold;

5. Electroplating nickel gold

Onye na-eduzi n’elu PCB bụ electroplated na oyi akwa nke nickel wee electroplated na akwa ọla edo. Ebumnuche bụ isi nke nickel plating bụ igbochi mgbasa n’etiti ọla edo na ọla kọpa. Enwere ụdị ọla edo electroplated abụọ: ọla edo dị nro (ọlaedo dị ọcha, ọla edo na-egosi na ọ naghị enwu gbaa) na akwa ọla edo siri ike (elu dị larịị na nke siri ike, na-eguzogide ọgwụ, nwere cobalt na ihe ndị ọzọ, na elu. na-ele anya karịa). A na-ejikarị ọla edo dị nro eme ihe maka waya ọla edo n’oge ngwugwu mgbawa; A na-ejikarị ọla edo siri ike maka njikọ eletrik na ebe anaghị ere ere (dị ka mkpịsị aka ọla edo).

6. PCB ngwakọ elu ọgwụgwọ technology

Họrọ ụzọ ọgwụgwọ elu abụọ ma ọ bụ karịa maka ọgwụgwọ elu. Ụdị ndị a na-ahụkarị bụ: imikpu Nickel Gold + Anti-oxidation, Electroplating Nickel Gold + Immersion Nickel Gold, Electroplating Nickel Gold + Hot Air Leveling, Immersion Nickel Gold + Hot Air Leveling.

Ịkwanye ikuku na-ekpo ọkụ (na-enweghị ndu/edu) bụ usoro a na-ahụkarị na nke dị ọnụ ala maka ọgwụgwọ elu niile, mana biko ṅaa ntị na ụkpụrụ RoHS nke EU.

RoHS: RoHS bụ ọkọlọtọ amanyere iwu nke iwu EU guzobere. Aha ya n’uju bụ “Mgbochi nke ihe dị ize ndụ” (Mgbochi nke ihe ndị dị ize ndụ). E mejuputa ọkọlọtọ a n’ihu ọha na Julaị 1, 2006, ma ejiri ya mee ihe maka ịhazi ihe na ụkpụrụ nhazi nke ngwaahịa eletrọnịkị na ọkụ eletrik, na-eme ka ọ dịkwuo mma maka ahụike mmadụ na nchekwa gburugburu ebe obibi. Ebumnuche nke ọkọlọtọ a bụ ikpochapụ ihe isii gụnyere lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl na polybrominated diphenyl ethers na ngwaahịa eletriki na eletrọnịkị, ọ na-akọwapụta kpọmkwem na ọdịnaya ndu enweghị ike gafere 0.1%.