I-Mastering High-Speed ​​​​Digital Signals HDI PCB Prototyping

Yethula:

Siyakwamukela kubhulogi ka-Capel, lapho umgomo wethu uwukunikeza umhlahlandlela ophelele wokwenza ama-PCB we-HDI kusetshenziswa amasignali edijithali anesivinini esikhulu. Ngeminyaka engu-15 yokuhlangenwe nakho kokukhiqiza kwebhodi lesifunda, ithimba lethu elizinikele lochwepheshe lingakusiza uzulazule ezinkingeni ze-prototyping nokukhiqiza. Sihlinzeka ngezinsizakalo zobuchwepheshe zangaphambi kokuthengisa kanye nangemuva kokuthengisa ukuze siqinisekise ukwaneliseka okugcwele kwamakhasimende.Kulesi sihloko, sizohlola ubunkimbinkimbi be-HDI PCB prototyping, sigqamise ukubaluleka kwamasignali edijithali anesivinini esikhulu, futhi sinikeze imininingwane ebalulekile ukukusiza ukuthi uphumelele kulo mkhakha.

Ingxenye 1: Ukuqonda Imithelela Ye-HDI PCB Prototyping

Ukuze kuzuzwe ukusebenza okuphelele nokusebenza, kubalulekile ukuqonda ukubaluleka kwe-HDI PCB prototyping ezinhlelweni zokusebenza zedijithali ezinesivinini esikhulu. Ama-PCB e-High-density interconnect (HDI) aklanyelwe ukuthwala izendlalelo eziningi nokujikeleza okuyinkimbinkimbi, ngaleyo ndlela athuthukise ubuqotho besignali, ehlise ukuphazamiseka, futhi athuthukise ukusebenza kukagesi. Lezi zakhiwo zibaluleka kakhulu lapho kucutshungulwa amasiginali edijithali anesivinini esikhulu, lapho ngisho nokungafani okuncane kwe-impedance noma ukuhlanekezelwa kwesignali kungaholela ekonakaleni noma ekulahlekeni kwedatha.

Isigaba 2: Ukucatshangelwa Okubalulekile Kwe-Prototyping HDI PCBs

2.1 I-Design for Manufacturability (DfM)
I-Design for Manufacturability (DfM) idlala indima ebalulekile ku-HDI PCB prototyping. Ukusebenza eduze nabaklami bebhodi ngesikhathi sesigaba sokuqala sombono kuvumela ukuhlanganiswa okungenamthungo kokucaciswa kwedizayini namandla okwenza. Ngokuhlanganisa izimiso ze-DfM ezifana nokuthuthukisa ububanzi bokulandelela, ukukhetha izinto ezifanele, nokucabangela ukubekwa kwengxenye, unganciphisa izinselele zokukhiqiza ezingaba khona futhi wehlise izindleko zizonke.

2.2 Ukukhethwa kwezinto
Ukukhetha izinto ezifanele ze-HDI PCB prototypes kubalulekile ukuze kuzuzwe ukusebenza kahle kukagesi nokuthembeka. Izinto ezisetshenziswayo ezine-dielectric engaguquki, izakhiwo ze-impedance ezilawulwayo, nezici ezinhle kakhulu zokusakaza isignali kufanele kufunwe. Ukwengeza, cabanga ukusebenzisa ama-laminates akhethekile anesivinini esiphezulu ukuze ulawule ngokuqinile ubuqotho besignali futhi unciphise ukulahlekelwa kwesignali.

2.3 Idizayini yesitaki nobuqotho besignali
Idizayini efanele yesitaki ingaba nomthelela omkhulu ekuthembekeni kwesignali nokusebenza kukonke. Ukubekwa kwezendlalelo, ukujiya kwethusi, kanye nogqinsi lwe-dielectric kufanele kuhlelwe ngokucophelela ukuze kuncishiswe i-crosstalk, ukulahleka kwesignali, nokuphazamiseka kazibuthe. Ukusebenzisa ubuchwepheshe bokusebenzisa i-impedance okulawulwayo ngenkathi kubambelela ezindinganisweni zomkhakha kusiza ukugcina ubuqotho besignali nokunciphisa ukubonakaliswa.

Isigaba 3: I-HDI PCB Prototyping Technology

3.1 I-Microhole laser drilling
Ama-Microvias abalulekile ukuze kuzuzwe ukuminyana okuphezulu kuma-HDI PCB futhi angadalwa ngokuphumelelayo kusetshenziswa ubuchwepheshe bokubhola nge-laser. I-Laser drilling inika amandla ukulawula okunembile ngosayizi, i-aspect ratio nosayizi wephedi, kuqinisekisa ukuxhumana okuthembekile ngisho nasezicini ezincane. Ukusebenza nomkhiqizi we-PCB onolwazi njengoCapel kuqinisekisa ukubulawa okunembile kwenqubo eyinkimbinkimbi yokumba i-laser.
3.2 Lamination ngokulandelana
I-Lamination elandelanayo iwubuchwepheshe obuyinhloko obusetshenziswa kunqubo ye-HDI PCB prototyping futhi ihilela ukuhlanganisa izingqimba eziningi ndawonye. Lokhu kuvumela umzila oqinile, ubude bokuxhumana obuncishisiwe, nama-parasites ancishisiwe. Ngokusebenzisa ubuhlakani obusha bokucwasa obufana nenqubo yoKwakha-Up (BUP), ungafinyelela ukuminyana okuphezulu ngaphandle kokubeka engcupheni ubuqotho besignali.

Isigaba 4: Imikhuba Engcono Kakhulu Yobuqotho Besiginali Yedijithali Esheshayo

4.1 Ukulawulwa kokuphazamiseka kanye nokuhlaziywa kobuqotho besignali
Ukusebenzisa amasu okulawula i-impedance afana nokulandelwa kwe-impedance okulawulwayo kanye nokufanisa i-impedance kubalulekile ekugcineni ubuqotho besignali kumiklamo yedijithali enesivinini esikhulu. Amathuluzi okulingisa athuthukile angakusiza uhlaziye izinkinga zesignali yobuqotho, uhlonze izinguquko ezingaba khona zokuthikamezeka, futhi ulungiselele isakhiwo se-PCB ngokufanele.

4.2 Izinkombandlela Zokuklama Ubuqotho Besiginali
Ukulandela imihlahlandlela yedizayini esezingeni lomkhakha yamasiginali edijithali anesivinini esikhulu kungathuthukisa ukusebenza kukonke kweprototype yakho ye-HDI PCB. Eminye imikhuba okufanele uyikhumbule ukunciphisa ukungaqhubeki, ukulungisa izindlela zokubuya, kanye nokunciphisa inani lama-vias ezindaweni ezinesivinini esikhulu. Ukusebenza nethimba lethu locwaningo lobuchwepheshe elinolwazi nentuthuko kungakusiza ukuthi uthobele le mihlahlandlela ngempumelelo.

Ekuphetheni:

Ukwenza i-Prototyping HDI PCBs kusetshenziswa amasiginali edijithali anesivinini esikhulu kudinga ukunakwa okucophelela emininingwaneni.Ngokusebenzisa ubuchwepheshe nolwazi luka-Capel, ungakwazi ukuhlehlisa izinqubo, unciphise ubungozi bokukhiqiza futhi uzuze imiphumela ephezulu. Kungakhathaliseki ukuthi udinga i-prototyping esheshayo noma ukukhiqizwa kwevolumu, izindawo zethu zokukhiqiza ibhodi lesifunda zingahlangabezana nezidingo zakho. Xhumana nethimba lethu lochwepheshe namuhla ukuze uthole umkhawulo wokuncintisana emhlabeni osheshayo wokukhiqiza isignali yedijithali ye-HDI PCB enesivinini esikhulu.