Nge-thickness yethusi lendawo mncane kakhulu futhi kuvuleke imbobo kakhulu PCB imboni yokukhiqiza ibhekane ndawonye, ​​enye yezinkinga ezinkulu zobuchwepheshe esikhathini esidlule ingxoxo evulekile ingxoxo evulekile futhi izindatshana zocwaningo zikhawulelwe ekukhethweni kwebhodi le-PCB lepulangwe, ishidi le-CTE lokuqina kokunwebeka okushisayo likhulu, ngokuhamba kwesikhathi ukushaqeka okubandayo nokushisayo kudale ukuthi umgodi uqhekeke ukwehluleka kwecala, njengokucubungula ithusi ngaphandle kwe-PCB uqobo, I-Hole copper electroplating ukuhlaziya nokuxazulula izinkinga. Leli phepha lihlaziya imbangela yethusi elincanyana emgodini kusukela kusici se-electroplating ye-PCB, futhi lisitshela ukuthi singakugwema kanjani ukwehluleka kwe-PCB okubangelwa yisifunda esivulekile ngenxa yethusi elincanyana emgodini kusukela kusici se-electroplating.

Ngokuvamile, ubukhulu bomgodi wethusi webhodi lesifunda lendabuko liyadingeka phakathi kuka-0.8-1mil. Ngokuqondene namanye amabhodi wesifunda aminyana aphakeme, njenge-HDI, ngoba umgodi oyimpumputhe akulula ukuwusebenzisa futhi ukuze wenze ucingo oluncane, izidingo zobukhulu bethusi lomgodi zizoncishiswa ngokulingene, ngakho-ke kukhona nobuncane bomgodi obuphelile bomgodi ka-0.4mil noma imininingwane engaphezulu. Kodwa-ke, kukhona amanye amacala akhethekile, njengamabhodi wesifunda amakhulu wezinhlelo ezidinga ukujiya komgodi ongu-0.8mil noma ngaphezulu ngenxa yomhlangano okhethekile nezidingo zokwethembeka zesikhathi eside sokusetshenziswa. Ku-IPC-6012, kunebanga elicacile lobukhulu bethusi ebusweni bomgodi, ngakho-ke hlobo luni lomgodi wethusi oludingekayo, ngokuya ngezidingo zomkhiqizo, ekugcineni lucaciswa yikhasimende.

I-PCB imbobo yethusi ukujiya okujwayelekile nokuqedwa kokubumba kwethusi

Okulandelayo ishadi lokugeleza elijwayelekile le-PCB ejwayelekile:

I-PCB imbobo yethusi ukujiya okujwayelekile nokuqedwa kokubumba kwethusi

I-PCB imbobo yethusi ukujiya okujwayelekile nokuqedwa kokubumba kwethusi

Singabona ngokucacile kusuka kuleso sibalo, i-PCB yethu eqedile ukujiya kwethusi yi-PCB base ithusi ukujiya nobukhulu bepuleti kagesi nogesi, ekugcineni, lokho kuqediwe ukujiya kwethusi kukhulu kune-PCB yesisekelo sethusi, futhi sonke siyi-PCB imbobo yethusi ukujiya, kuqediwe ezinqubeni ezimbili zokuqothulwa, okungukuthi, ukushuba kwayo yonke imbobo yepuleti yokugoba ithusi lokuqothula ubhedu nemidwebo.

Ukuqina kwethusi okuqediwe kwe-PCB kwenziwa ngosisekelo wethusi wesisekelo we-PCB kanye nokushuba kokugcina kwebhodi kagesi kanye nogesi wegrafu, okungukuthi, ukuqina kwethusi okuphelile kukhulu kunethusi lesisekelo le-PCB. Ubukhulu bethusi bazo zonke izimbobo ze-PCB yethu buqedwa ngokuqothula izinqubo ezimbili, okungukuthi, ukushuba kwethusi kwezimbobo ezigoqiwe zebhodi lonke nobukhulu bethusi bemidwebo ekhethiwe.

Imikhiqizo evamile eqediwe i-1OZ iphelile ukujiya kwethusi, umgodi wethusi ngokuya nge-IPC level 2 standard, imvamisa ithusi (ipuleti eligcwele) ukujiya kwe-5-7um, ithusi (ukugoqwa okucacile) ubukhulu be-13-15um, ngakho-ke imbobo yethusi ubukhulu phakathi kwe-18 -22um, plus etching nezinye izizathu ezibangelwa ukulahleka, imbobo yokugcina yethusi cishe ingu-20UM.

Izidingo ezijwayelekile zobukhulu bethusi emgodini (IPC-6012B, GJB 362A-96, QJ3103-99)

I-PCB imbobo yethusi ukujiya okujwayelekile nokuqedwa kokubumba kwethusi

Ngokusebenzisa i-hole electroplating isixhumanisi esibaluleke kakhulu kunqubo yokukhiqiza ye-PCB. Ukuze ubone ukuxhumana ngogesi kwamazinga ahlukene wensimbi eqhubayo, ithusi elinokuqhutshwa kahle kukagesi lidinga ukufakwa odongeni lomgodi wembobo. Ngokuncintisana okuya ngokuya kunemikhiqizo yokubulalayo, nakanjani kufanele kubeke phambili izidingo eziphakeme ekuthembekeni kwemikhiqizo ye-PCB, futhi ukushuba kongqimba lwe-electroplating through-hole sekuyinto eyodwa yokukala ukuthembeka kwe-PCB. Isici esibalulekile esithinta ukujiya kwethusi lomgodi we-PCB yikhono lokujula elijulile le-PCB plating.

Inkomba ebalulekile yokuhlola umphumela we-PCB ogoqeka emgodini ukufana kobukhulu bethusi lokumboza emgodini. Emkhakheni we-PCB, umthamo wokujula ojulile uchazwa ngokuthi isilinganiso sobukhulu bokumboza kwethusi maphakathi nomgodi kuya ekujiweni kwethusi ekumbeni emlonyeni womgodi.

Ukuze uchaze kangcono ikhono lokufaka okujule kakhulu, isilinganiso sokuvula ubukhulu, okusho ukuthi, ubukhulu be-thickness ubukhulu, buvame ukusetshenziswa.

Ibhodi le-PCB alinkulu kakhulu kepha ukuvula kuvulekile, ukusatshalaliswa kwamandla kagesi kunqubo yokuqothula kufana nokufana, ukusabalalisa kwe-ion emgodini kuhle, isisombululo se-electroplating isixazululo somthamo wokujula ojwayele ukuba mkhulu kakhulu; Ngokuphambene nalokho, lapho isilinganiso sobukhulu nobubanzi siphezulu, udonga lomgodi luzokhombisa ukwenzeka “kwethambo lenja”, (into yethusi elijiyile emlonyeni nethusi elincanyana maphakathi nomgodi), iplati ejulile umthamo okugeza abampofu.

Amandla wokujula okuphezulu anezinzuzo ezilandelayo:

1. Thuthukisa ukuthembeka

Ukufana kobukhulu besendlalelo sethusi esincishisiwe odongeni lomgodi kuyathuthukiswa, okunikeza isiqinisekiso esingcono somthelela obandayo futhi oshisayo we-PCB endaweni elandelayo yokukhweza nokusetshenziswa kwemikhiqizo yokugcina, ukuze kugweme ukwehluleka isigaba sokuqala, yelula impilo yesevisi yemikhiqizo futhi ithuthukise ukuthembeka okuphezulu kwemikhiqizo.

2. Thuthukisa ukusebenza kahle kokukhiqiza

Inqubo ye-Electroplating imvamisa inqubo ye- “bottleneck” enqubeni yokukhiqiza, ukwenziwa kwamandla okujula okujulile kunganciphisa isikhathi sokufaka, kuthuthukise ukukhiqiza nokusebenza kahle.

3. Nciphisa izindleko zokukhiqiza

Izimboni ze-PCB ngokuvamile zikholelwa ukuthi uma umthamo wokujula ojulile unyuke ngo-10%, izindleko ezibonakalayo zingancishiswa okungenani nge-10%. Inzuzo eqondile yale nto eyodwa iyisigidi esisodwa kuphela yuan / ngonyaka, kungasaphathwa uchungechunge lwezinzuzo ezingaqondile ngemuva kokwenza ikhwalithi yomkhiqizo.