Na mmepụta na nhazi nke PCBA ụgbọ ala, ụfọdụ bọọdụ sekit kwesịrị ka ejiri ọla kọpa kpuchie ya. Mkpuchi ọla kọpa nwere ike belata mmetụta nke ngwaahịa SMT patch nke ọma na ịkwalite ikike mgbochi nnyonye anya yana ibelata mpaghara akaghị. Enwere ike iji mmetụta dị mma ya mee ihe na nhazi SMT patch. Otú ọ dị, e nwere ọtụtụ ihe ị ga-aṅa ntị n'oge usoro ịkwanye ọla kọpa. Ka m gosi gị nkọwa nke PCBA nhazi ọla kọpa wụsa usoro.
一. Usoro ịwụsa ọla kọpa
1. Pretreatment akụkụ: Tupu nkịtị ọla kọpa agbapụtara, na PCB osisi kwesịrị pretreated, gụnyere ihicha, nchara mwepụ, ihicha na ndị ọzọ nzọụkwụ iji hụ na ịdị ọcha na ire ụtọ nke osisi n'elu na-atọkwa a ezi ntọala maka iwu ọla kọpa agbapụtara.
2. Electroless ọla kọpa plating: mkpuchi a oyi akwa nke electroless ọla kọpa plating mmiri mmiri n'elu nke sekit ka chemical ijikọta na ọla kọpa foil na-emepụta a ọla kọpa ihe nkiri bụ otu n'ime ndị kasị ụzọ nke ọla kọpa plain. Ihe bara uru bụ na ọkpụrụkpụ na ịdị n'otu nke ihe nkiri ọla kọpa nwere ike ịchịkwa nke ọma.
3. Mechanical ọla kọpa plating: Elu nke sekit osisi kpuchie na oyi akwa nke ọla kọpa foil site n'ibu nhazi. Ọ bụkwa otu n'ime ụzọ ịkwanye ọla kọpa, ma ọnụ ahịa mmepụta dị elu karịa ihe mkpuchi ọla kọpa, n'ihi ya ị nwere ike ịhọrọ iji ya n'onwe gị.
4. mkpuchi ọla kọpa na lamination: Ọ bụ nzọụkwụ ikpeazụ nke usoro mkpuchi ọla kọpa dum. Mgbe emechara ihe mkpuchi ọla kọpa, ọ dị mkpa ka a na-agbanye ihe mkpuchi ọla kọpa n'elu elu nke sekit iji hụ na njikọta zuru oke, si otú ahụ hụ na conductivity na ntụkwasị obi nke ngwaahịa ahụ.
二. Ọrụ nke mkpuchi ọla kọpa
1. Belata mgbochi nke waya ala ma melite ikike mgbochi nnyonye anya;
2. Belata ọdịda voltaji ma melite arụmọrụ ike;
3. Jikọọ na waya ala iji belata mpaghara loop;
三. Akpachara anya maka ịwụsa ọla kọpa
1. Awụpụla ọla kọpa na oghere oghere nke wiring n'etiti oyi akwa nke osisi multilayer.
2. Maka njikọ nke otu na ebe dị iche iche, usoro bụ iji jikọọ site na 0 ohm resistors ma ọ bụ magnetik beads ma ọ bụ inductors.
3. Mgbe ịmalite imewe wiring, a ga-eme ka waya ala dị mma. Ị nweghị ike ịdabere na ịgbakwụnye vias mgbe ịwụsa ọla kọpa iji kpochapụ ntụtụ ala enweghị njikọ.
4. Wunye ọla kọpa n'akụkụ oscillator kristal. Igwe oscillator kristal dị na sekit bụ isi iyi na-eku ume ugboro ugboro. Usoro a bụ ịwụsa ọla kọpa n'akụkụ oscillator kristal, wee gbanye shea nke oscillator kristal iche iche.
5. Gbaa mbọ hụ na ọkpụrụkpụ na ịdị n'otu nke oyi akwa ọla kọpa. Dịka, ọkpụrụkpụ nke oyi akwa mkpuchi ọla kọpa dị n'etiti 1-2oz. Igwe ọla kọpa nke dị oke oke ma ọ bụ dị oke mkpa ga-emetụta arụmọrụ na-eduzi yana àgwà nnyefe nke PCB. Ọ bụrụ na oyi akwa ọla kọpa enweghị isi, ọ ga-eme ka nnyonye anya na ọnwụ nke akara sekit na bọọdụ sekit, na-emetụta arụmọrụ na ntụkwasị obi nke PCB.