1. PCB dịghị usoro onu, usoro oghere, enweghị ike izute SMT akụrụngwa clamping chọrọ, nke pụtara na ọ pụghị izute chọrọ nke uka mmepụta.
2. PCB udi mbịarambịa ma ọ bụ size kwa nnukwu, oke obere, otu enweghị ike izute chọrọ nke akụrụngwa clamping.
3. PCB, FQFP pads gburugburu ọ dịghị ngwa anya n'ọnọdu akara (Mark) ma ọ bụ Mark point bụghị ọkọlọtọ, dị ka Mark ebe gburugburu solder iguzogide film, ma ọ bụ kwa nnukwu, kwa obere, n'ihi Mark point image iche bụ obere, igwe. Mkpu ugboro ugboro enweghị ike ịrụ ọrụ nke ọma.
4. The mpe mpe akwa Ọdịdị size bụghị ziri ezi, dị ka mpe mpe akwa spacing nke mgbawa components bụ oke ibu, oke obere, na mpe mpe akwa abụghị symmetrical, n'ihi na a dịgasị iche iche nke ntụpọ mgbe ịgbado ọkụ nke mgbawa components, dị ka skewed, guzo ihe ncheta. .
5. Pads na n'elu-oghere ga-eme ka solder gbazere site oghere na ala, na-eme ka obere solder solder.
6. Chip components pad size abụghị symmetrical, karịsịa na ala ahịrị, n'elu akara nke a akụkụ nke ojiji dị ka a mpe mpe akwa, nke mere nareflow ovensoldering mgbawa mmiri na ma nsọtụ nke mpe mpe akwa na-ekwekọghị ekwekọ okpomọkụ, solder mado agbazewo ma kpatara ihe ncheta ntụpọ.
7. IC mpe mpe akwa imewe adịghị mma, FQFP na mpe mpe akwa dị oke obosara, na-eme ka àkwà mmiri mgbe ịgbado ọkụ ọbụna, ma ọ bụ na mpe mpe akwa mgbe nsọtụ bụ kwa mkpụmkpụ mere ezughị ezu ike mgbe ịgbado ọkụ.
8. IC paịlị n'etiti eriri ndị na-ejikọta ọnụ na-etinye n'ime etiti, ọ bụghị ihe na-eme ka SMA nyochaa post-soldering.
9. Igwe na-ere ebili mmiriIC enweghị paịlị inyeaka imewe, na-ebute nchikota nbipute mgbe emechara.
10. PCB ọkpụrụkpụ ma ọ bụ PCB na IC nkesa adịghị ezi uche, na PCB deformation mgbe ịgbado ọkụ.
11. A naghị ahazi ihe nlele ule, nke mere na ICT enweghị ike ịrụ ọrụ.
12. Ọdịiche dị n'etiti SMD adịghị mma, na ihe isi ike na-ebilite na nrụzi ọzọ.
13. The solder eguzogide oyi akwa na agwa map na-adịghị ọkọlọtọ, na solder eguzogide oyi akwa na agwa map ọdịda na mpe mpe akwa na-eme ka ụgha soldering ma ọ bụ eletriki kwụsịrị.
14. enweghị ezi uche imewe nke splicing osisi, dị ka ogbenye nhazi nke V-oghere oghere, dapụtara PCB deformation mgbe reflow.
Njehie ndị a dị n'elu nwere ike ime n'ime otu ma ọ bụ karịa n'ime ngwaahịa emeghị nke ọma, na-ebute mmetụta dịgasị iche iche na ogo nke ire ere.Ndị na-emepụta ihe amaghị nke ọma banyere usoro SMT, karịsịa ihe ndị dị na reflow soldering nwere usoro "ike" aghọtaghị bụ otu n'ime ihe kpatara imewe ọjọọ.Na mgbakwunye, imewe n'oge leghaara ndị ọrụ usoro isonye na enweghị nkọwapụta nke ụlọ ọrụ maka nrụpụta, bụkwa ihe kpatara imewe adịghị mma.
Oge nzipu: Jan-20-2022