Menene wuraren sarrafawa na maɓalli na tsarin samar da allunan kewayawa da yawa

Gabaɗaya ana siffanta allunan da'irar da'irar da'ira 10-20 ko fiye da manyan allunan da'irar multilayer, waɗanda suka fi wahalar sarrafawa fiye da allunan da'irar multilayer na gargajiya kuma suna buƙatar inganci da ƙarfi.An fi amfani da shi a kayan aikin sadarwa, manyan sabobin, na'urorin likitanci, sufurin jiragen sama, sarrafa masana'antu, soja da sauran fannoni.A cikin 'yan shekarun nan, kasuwar buƙatun allunan da'ira mai nau'i-nau'i da yawa a fagen sadarwa, tashoshi, jiragen sama, da sojoji na da ƙarfi har yanzu.
Idan aka kwatanta da samfuran PCB na al'ada, allunan kewayawa da yawa suna da halaye na allo mai kauri, ƙarin yadudduka, layuka masu yawa, ƙari ta ramuka, girman naúrar, da siraren dielectric Layer.Bukatun jima'i suna da yawa.Wannan takarda a taƙaice ta bayyana manyan matsalolin sarrafawa da aka fuskanta wajen samar da manyan allunan da'ira, da kuma gabatar da mahimman abubuwan kula da mahimman hanyoyin samar da allunan da'irar multilayer.
1. Wahala a daidaita tsakanin Layer
Saboda yawan adadin yadudduka a cikin allon kewayawa mai yawa, masu amfani suna da buƙatu mafi girma da girma don daidaita matakan PCB.Yawanci, haƙurin jeri tsakanin yadudduka ana sarrafa shi a 75 microns.Idan akai la'akari da girman girman naúrar da'ira mai nau'i-nau'i da yawa, babban zafin jiki da zafi a cikin tarurrukan jujjuya zane-zane, rarrabuwar kawuna ta haifar da rashin daidaituwa na allunan mahimmanci daban-daban, da hanyar sakawa interlayer, kulawar tsakiya na Multi-Layer. allon kewayawa yana ƙara wahala.
Multilayer kewaye allon
2. Matsalolin kera na'urorin cikin gida
Multilayer allon allo suna amfani da kayan musamman irin su TG mai girma, babban gudu, babban mita, jan ƙarfe mai kauri, da yadudduka na dielectric na bakin ciki, waɗanda ke gabatar da manyan buƙatu don masana'antar kewaye na ciki da sarrafa girman hoto.Misali, amincin watsa siginar impedance yana ƙara wa wahalar ƙirƙira kewayen ciki.
Nisa da tazarar layi ƙanana ne, ana ƙara buɗaɗɗe da gajere, ana ƙara gajerun da'ira, ƙimar wucewa ba ta da yawa;akwai nau'ikan sigina da yawa na layin bakin ciki, kuma yuwuwar gano ɗigon AOI a cikin Layer na ciki yana ƙaruwa;allon ainihin ciki yana da bakin ciki, mai sauƙin murƙushewa, ƙarancin haske, kuma mai sauƙin murɗawa lokacin etching na'ura;Manyan faranti galibi allunan tsarin ne, girman rukunin yana da girma, kuma farashin tarwatsa samfur yana da yawa.
3. Wahala wajen Samar da Matsi
Yawancin allo na ciki da allunan prepreg an cika su, waɗanda kawai ke gabatar da rashin lahani na zamewa, delamination, resin voids da ragowar kumfa a cikin samarwa.A cikin ƙirar ƙirar laminate, juriya na zafi, juriya na matsa lamba, abun ciki mai manne da kauri dielectric na kayan ya kamata a yi la'akari da su sosai, kuma yakamata a tsara tsarin matsi da matsi mai ma'ana mai ma'ana.
Saboda yawan adadin yadudduka, haɓakawa da haɓakawa da haɓakawa da ƙimar ƙimar ƙima ba za su iya kiyaye daidaito ba, kuma ƙaramin insulating na bakin ciki yana da sauƙi, wanda ke haifar da gazawar gwajin amincin interlayer.
4. Matsaloli a masana'antar hakowa
Yin amfani da babban TG, babban gudu, babban mita, da kauri na musamman faranti na jan ƙarfe yana ƙara wahalar hakowa roughness, hakowa burrs da decontamination.Adadin yadudduka yana da girma, jimlar jan karfe da kauri na faranti suna tarawa, kuma kayan aikin hakowa yana da sauƙin karya;matsalar gazawar CAF ta hanyar BGA da aka rarraba da yawa da tazarar bangon ramin kunkuntar;matsalar hakowa da ba ta dace ba ta haifar da kauri mai sauƙi.PCB kewaye allon


Lokacin aikawa: Yuli-25-2022