Kedu ihe ga-eme ma ọ bụrụ na ihe PCB na nha adịghị mma?

1. Dị ka ndokwa nke GJB3835, mgbe warping na deformation ịgbado ọkụ nke PCBA na.reflow ovenusoro ịgbado ọkụ, kacha warping na distortion agaghị agafe 0.75%, na warping na distortion nke PCB na ezi-space components agaghị agafe 0,5%.
2. PCBA na doro anya warping, ma ọ bụrụ na multi-layer PCBA nwere deformation stress, gụnyere mkwado nke metal etiti echichi, chassis n'elu ikpo okwu ịghasa echichi, chassis ndu rail ndu uzo ntinye na ndị ọzọ na-atụgharị deformation echichi (ntinye) ọrụ, O yikarịrị ka ọ ga-akpata. mmebi ma ọ bụ mgbaji na oghere metallization nke wires ndị e biri ebi dị ka nnukwu njupụta IC na ihe ndị ọzọ na-eduga, BGA/CCGA solder nkwonkwo na oghere agba anọ nke PCB multilayer.

3. PCBA na distortion ma ọ bụ na-ehulata ruo 0.75% ga-arụnyere dị ka ndị na-esonụ ndokwa ma ọ bụrụ na ọ na-kwenye na deformation nchegbu adịghị eme ka akụkụ mmebi na ntụkwasị obi nsogbu na ọ kwesịrị ịnọgide na-eji.
Wụnye (fanye) na ịghasa fastening ozugbo na chassis n'elu ikpo okwu, ụzọ uzo, okporo ụzọ ụgbọ okporo ígwè ma ọ bụ ogidi ekwesịghị rụrụ iji zere n'ihu mmebi nke components na metallized oghere kpatara nrụrụ nrụrụ nke PCB nrụnye nwụnye.
A ga-ewere usoro ihe ndina nke mpaghara (eletrik ma ọ bụ thermal conductive ihe) n'ebe a na-eme mgbanwe na nkwụsịtụ nrụrụ nke kachasị, na-enweghị emetụta ntụkwasị obi nrụnye na ijide n'aka na ọwa ọkụ ma ọ bụ ihe na-eduzi.Enwere ike ịwụnye akụkụ warping na ngwa ngwa naanị n'okpuru ọnọdụ na mgbakọ sekit e biri ebi nke deformed anaghị ebu nrụgide nrụrụ azụ.

4. The rigidity na deformation ikike nke ihe ahọpụtara maka PCB nrụnye Ọdịdị na mkwado etiti agaghị eme ka mgbagha ma ọ bụ ụta deformation ma ọ bụ laa azụ deformation nke PCB.

5. N'ihi na multilayer PCBA na doro anya distortion ma ọ bụ kpọọ isiala, ma ọ bụ distortion (ịkpọ isi ala) ihe na-erughị 0.75%, karịsịa PCBA onwem na elu-njupụta IC, BGA / CCGA components, mgbazi ma ọ bụ mgbochi deformation echichi nke PCB kwesịrị nnọọ igbochi. .