The I-HDI PCB ukwakheka kungaminyana kakhulu, kepha isethi efanele yemithetho yokuklama izokusiza ukuklama ngempumelelo.

Ama-PCBS athuthuke kakhulu asebenza ngokwengeziwe kuzikhala ezincane, imvamisa kusetshenziswa ama-ics / ama-soC wangokwezifiso, izingqimba eziphakeme, nokulandela okuncane. Ukusetha ukwakheka kwale miklamo ngokufanele kudinga isethi enamandla yamathuluzi wokuklama aqhutshwa umthetho angabheka izintambo nokuhleleka ngokuhambisana nemithetho yokwakha lapho kwakhiwa i-PCB. Uma usebenzisa isakhiwo sakho sokuqala se-HDI, kungahle kube nzima ukubona ukuthi yimiphi imithetho yokuklama edinga ukusethwa lapho uqala ukwakheka kwe-PCB yakho.

Setha ukwakheka kwe-HDI PCB

Nge-HDI PCBS, kuncane ukuhlukanisa le mikhiqizo kuma-PCBS ajwayelekile ngaphandle kwengxenye nobuningi bezintambo. Ngibonile abaklami bekhomba ukuthi ibhodi ye-HDI yinoma yini enezimbobo eziyizigidi eziyi-10 noma ngaphansi, izintambo eziyizigidi eziyisithupha noma ngaphansi, noma u-6 mm noma isikhala esincane sephini. Umkhiqizi wakho uzokutshela ukuthi i-HDI PCBS isebenzisa izimbobo ezingaboni cishe ezi-8 mil noma ngaphansi, futhi izimbobo ezincane eziyimpumputhe zibholwa ngama-lasers.

Ngandlela thile, zombili ziyiqiniso, ngoba awukho umkhawulo othize wokwakheka kwesakhiwo se-HDI PCB. Wonke umuntu angavuma ukuthi uma idizayini ifaka ama-microholes, kuyibhodi le-HDI. Ehlangothini lokuklama, udinga ukusetha imithetho ethile yokuklama ngaphambi kokuthi uthinte ukwakheka. Kufanele uqoqe amakhono womkhiqizi ngaphambi kokusungula imithetho yedizayini. Lapho usukwenzile lokhu, udinga ukusetha imithetho yokwakhiwa nokusebenza kokunye ukwakheka

Ububanzi bekhebuli nobukhulu bembobo. Ububanzi bokulandela ngomkhondo kanye nobubanzi bomugqa kuzonquma uma ufaka uhlelo lwe-HDI. Lapho ububanzi bezintambo bube buncane ngokwanele, izimbobo ezihamba phakathi kuzoba zincane kakhulu ukuthi kufanele zenziwe njengama-microholes.

Izinguquko zesendlalelo. Izimbobo ezidlulayo zidinga ukwakhiwa ngokucophelela ngokuya nge-aspect ratio, nayo encike kusayizi wesendlalelo odingekayo. Ukuguqulwa kwesendlalelo kufanele kuchazwe kusenesikhathi ukuze zikwazi ukubekwa masisha ngesikhathi somzila.

Ukususwa. Iminonjana kufanele yehlukaniswe komunye nomunye nakwezinye izinto (amaphedi, imihlangano, izindiza, njll.) Ezingeyona ingxenye yenethiwekhi. Inhloso lapha ukuqinisekisa ukuhambisana nemithetho ye-HDI DFM nokuvikela i-crosstalk eyeqile.

Eminye imikhawulo yezintambo, njengokulungiswa kobude bekhebula, ubude bekhebula obukhulu, nokuphambuka okuvumelekile kwe-impedance ngesikhathi sezintambo nakho kubalulekile, kepha kuzosebenza ngaphandle kwebhodi le-HDI. Amaphuzu amabili abaluleke kakhulu lapha ngosayizi we-hole-hole nobubanzi bomugqa. Ukususwa kunganqunywa ngezindlela ezahlukahlukene (ngokwesibonelo, ukulingisa) noma ngokulandela imithetho ejwayelekile yesithupha. Qaphela okwakamuva, ngoba lokhu kungaholela ezimweni lapho kune-crosstalk yangaphakathi kakhulu noma ukunganeli kwenethiwekhi okunganele.

Yokuvikela ngocwazi kanye perforation

Isitaki se-HDI singahluka kusuka kokumbalwa kuya kwezingqimba eziningi ukumumatha ukuminyana komzila okufunayo. Amabhodi ane-pin-count ephezulu ye-pin-pitch i-BGA ingaba nokuxhumana okungamakhulukhulu nge-quadrant ngayinye, ngakho-ke ama-perforations adinga ukusethwa lapho kwakhiwa izitaki zesendlalelo sezakhiwo ze-HDI PCB.

Uma ubheka umphathi wesitaki sezingqimba ku-software ye-PCB design, ungahle ungakwazi ukuchaza ngokusobala ukuguqulwa kwesendlalelo esithile njengama-microholes. Akunandaba; Usengasetha ushintsho lwesendlalelo bese usetha imikhawulo yosayizi wembobo emigodini yokuklama.

Leli khono lokubiza i-microchannel i-microhole liwusizo kakhulu uma ususethe imithetho yokusetha futhi wakhe ithempulethi. Ukusetha imithetho yokuklanywa kwentambo emigodini, ungachaza imithetho yedizayini ezosebenza kuma-microholes kuphela. Lokhu kukuvumela ukuthi usethe imikhawulo ethile yokuvunyelwa ngosayizi wephedi nobubanzi bemigodi.

Ngaphambi kokuqala ukusetha imithetho yokuklama, kufanele uthintane nomenzi ngokusebenza kwayo. Ngemuva kwalokho uzodinga ukusetha ububanzi bezintambo kumthetho wokuklama ukuqinisekisa ukuthi i-impedance yezintambo ilawulwa kunani olifunayo. Kwezinye izimo, ukulawulwa kwe-impedance akudingeki, futhi ungahle ufune ukukhawulela ububanzi bezintambo ebhodini le-HDI ukugcina ubungako bezintambo obuphakeme.

Ububanzi bomugqa wokuhamba

Unganquma ububanzi be-wiring obufunayo ngezindlela eziningi. Okokuqala, ukuthola umzila olawulwa yimpedance, udinga elinye lamathuluzi alandelayo:

Bala usayizi wokulandela odingekayo ngepeni nephepha (indlela enzima)

I-Online Calculator (indlela esheshayo)

Ama-solvers wensimu ahlanganiswe kumathuluzi wakho wokuqamba nokuhlelwa (indlela enembile kakhulu)

Ubuthakathaka bama-calculator womugqa wokubalwa kwe-impedance wiring, futhi umqondo ofanayo uyasebenza lapho ulungisa osayizi bezintambo zezakhiwo ze-HDI PCB.

Ukusetha ububanzi bomugqa, ungabuchaza njengesithiyo kusihleli somthetho wokuklama, njengoba nje wenze ngosayizi wembobo. Uma ungakhathazeki ngokulawulwa kwe-impedance, ungasetha noma ibuphi ububanzi. Ngaphandle kwalokho, udinga ukunquma ijika le-impedance ye-lamination ye-PCB bese ufaka lobubanzi obuthile njengomthetho wokuklama.

Ukulinganisa ngokucophelela kuyadingeka ngoba ububanzi bezintambo akufanele bube bukhulu kakhulu ngosayizi wephedi. Uma ububanzi bomugqa wokulawula i-impedance bukhulu kakhulu, ukushuba kwe-laminate kufanele kuncishiswe, ngoba lokhu kuzophoqa ukuthi ububanzi bomugqa banciphiswe, noma usayizi wephedi ungakhuphuka. Uma nje usayizi wepulatifomu ungaphezu kwamanani afakwe kuhlu lwe-IPC, kulungile ngombono wokuthembeka.

imvume

Ngemuva kokuphothula imisebenzi emibili ebucayi eboniswe ngenhla, udinga ukunquma igebe elifanele lokulandela umkhondo. Ngeshwa, isikhala phakathi kwemikhondo akumele senzakale emithethweni yesithupha engu-3W noma engu-3H, njengoba le mithetho isetshenziswe ngokungafanele emabhodini athuthukile anamasiginali wejubane eliphezulu. Esikhundleni salokho, kuwumqondo omuhle ukulingisa i-crosstalk kububanzi bomugqa ohlongozwayo bese uhlola ukuthi ngabe i-crosstalk eyeqile yenziwa yini.