Site na usoro na Multilayer PCB Fabrication

Vias bụ otu n'ime ihe ndị dị mkpa nkemultilayer PCB mmepụta, na ọnụ ahịa nke mkpọpu mmiri na-abụkarị 30% ruo 40% nke ọnụ ahịaPCB prototype.The via oghere bụ oghere gbapụrụ na ọla kọpa clad laminate.Ọ na-ebu ntụgharị n'etiti akwa akwa ma jiri ya mee ihe maka njikọ eletrik na idozi ngwaọrụ.mgbanaka.

Site na usoro nrụpụta PCB multilayer, a na-ekewa vias ụzọ atọ, ya bụ, oghere, oghere ndị e liri na site na oghere.Na multilayer PCB emepụta na mmepụta, nkịtị site na usoro na-agụnye site cover mmanụ, via plọg mmanụ, site window oghere, resin nkwụnye oghere, electroplating oghere ndochi, wdg. Usoro ọ bụla nwere ya àgwà.

1. Via mkpuchi mmanụ

The "mmanụ" nke via cover mmanụ na-ezo aka solder nkpuchi mmanụ, na via oghere mkpuchi mmanụ bụ na-ekpuchi oghere mgbanaka nke via oghere na solder nkpuchi ink.Ebumnuche nke site na mmanụ mkpuchi bụ mkpuchi, ya mere ọ dị mkpa iji hụ na mkpuchi ink nke mgbanaka oghere ahụ jupụtara na nke zuru oke, ka tin ghara ịrapara na patch na DIP mgbe e mesịrị.Ekwesiri iburu n'uche ebe a na ọ bụrụ na faịlụ ahụ bụ PADS ma ọ bụ Protel, mgbe ezigara ya na ụlọ ọrụ mmepụta ihe multilayer PCB maka site na mmanụ mkpuchi, ị ga-enyocha nke ọma ma oghere nkwụnye (PAD) na-eji site na, ma ọ bụrụ otú ahụ, gị A ga-eji mmanụ akwụkwọ ndụ akwụkwọ ndụ kpuchie oghere nkwụnye na enweghị ike ịgbado ya.

2. Site na windo

Enwere ụzọ ọzọ ị ga-esi mesoo "site na mmanụ mkpuchi" mgbe a na-emeghe oghere ahụ.E kwesịghị iji mmanụ nkpuchi solder kpuchie oghere ahụ na gromet.Imeghe nke oghere site na oghere ga-eme ka ebe ikpo ọkụ na-ekpo ọkụ, nke na-eme ka ikpo ọkụ na-ekpo ọkụ.Ya mere, ọ bụrụ na ihe ọkụ ọkụ ọkụ chọrọ nke osisi ahụ dị oke elu, enwere ike ịhọrọ oghere nke site na oghere.Na mgbakwunye, ọ bụrụ na ịchọrọ iji multimeter rụọ ọrụ nha na vias n'oge a na-emepụta PCB multilayer, wee meghee vias ahụ.Otú ọ dị, e nwere ihe ize ndụ nke imeghe site na oghere - ọ dị mfe ime ka mpempe akwụkwọ ahụ dị mkpụmkpụ na tin.

3. Site mmanụ nkwụnye

Via plugging mmanụ, ya bụ, mgbe multilayer PCB na-esichara na-emepụta, na solder mask ink na-ebu ụzọ plugged n'ime oghere na aluminum mpempe akwụkwọ, na mgbe ahụ solder nkpuchi mmanụ na-ebi na dum osisi, na niile site oghere. agaghị ebunye ọkụ.Ebumnobi ya bụ igbochi vias iji gbochie beads tin ka ọ ghara izo n'ime oghere, n'ihi na beads tin ga-asọba na pads mgbe agbazere na okpomọkụ dị elu, na-eme ka obere sekit, karịsịa na BGA.Ọ bụrụ na vias enweghị ink kwesịrị ekwesị, akụkụ nke oghere ga-acha uhie uhie, mee ka "ikpughe ọla kọpa ụgha" dị njọ.Na mgbakwunye, ọ bụrụ na via oghere plugging mmanụ emeghị nke ọma, ọ ga-emetụtakwa ọdịdị.

4. oghere nkwụnye resin

Oghere plọg resin pụtara nanị na mgbe e ji ọla kọpa kụchie mgbidi oghere ahụ, oghere ahụ na-ejupụta na resin epoxy, mgbe ahụ, a na-etinye ọla kọpa n'elu.Ntọala nke oghere plọg resin bụ na a ga-enwerịrị ihe mkpuchi ọla kọpa n'ime oghere ahụ.Nke a bụ n'ihi na a na-ejikarị oghere resin plọg na PCB eme ihe maka akụkụ BGA.BGA omenala nwere ike iji site n'etiti PAD na PAD iji mee ka waya gaa n'azụ.Agbanyeghị, ọ bụrụ na BGA dị oke oke na Via enweghị ike ịpụ apụ, enwere ike ịkụ ya ozugbo site na PAD.Mee Via gaa n'ala ọzọ ka ị na-ebugharị eriri.Elu nke multilayer PCB na-emepụta site na usoro oghere resin plug enweghị ihe ọ bụla, na oghere nwere ike ịgbanye na-enweghị emetụta soldering.Ya mere, ọ na-akwado na ụfọdụ ngwaahịa na elu n'ígwé nambadamba nkume.

5. Electroplating na oghere ndochi

Electroplating na ndochi pụtara na vias na-ejupụta na electroplated ọla kọpa n'oge multilayer PCB mmepụta, na ala nke oghere bụ larịị, nke na-abụghị nanị na-eme ka imewe nke stacked oghere na.site na pads, ma na-enyekwa aka melite arụmọrụ eletriki, nkwụsị ọkụ, na ntụkwasị obi.