Isilinganiso esikhulu sokuvama kokujika okusheshayo kwebhodi le-PCB lesibonelo

Uma kukhulunywa ngezinto zikagesi kanye namabhodi esekethe aphrintiwe (ama-PCB), isici esibalulekile onjiniyela nabakhiqizi abasibhekayo ukuvama kukalwa okuphezulu. Lesi silinganiso sinquma imvamisa ephezulu kakhulu lapho isekethi ingasebenza khona ngokwethembeka ngaphandle kokulahlekelwa okuphawulekayo noma ukuncishiswa kwesignali.Kulokhu okuthunyelwe kwebhulogi, sizohlola ukubaluleka kwesilinganiso esikhulu sokuvama ukuze siguqule ngokushesha amabhodi e-PCB esibonelo futhi sixoxe ngokuthi kukuthinta kanjani ukwakheka nokusebenza kwezinto zikagesi.

Isilinganiso esiphezulu sokuvama siyipharamitha ebalulekile lapho usebenza nezinhlelo ze-elekthronikhi ezinesivinini esikhulu neziyinkimbinkimbi.Isho imvamisa ephezulu lapho isiginali ingadluliswa nge-PCB ngaphandle kokuhlanekezela noma ukulahleka kwesignali. Lesi silinganiso siba esibaluleke nakakhulu uma kuziwa ekuguquleni ngokushesha amabhodi e-PCB esibonelo, njengoba lawa mabhodi evamise ukusetshenziswa ezigabeni zokuthuthukisa nokuhlola zemishini emisha kagesi.

Amabhodi e-Rapid Turnaround Prototype PCB akhiqizwa ngesikhathi esifushane futhi ajwayele ukusetshenziselwa ubufakazi bomqondo, ukuhlola, nokuqinisekiswa komklamo wokuqala.Inhloso yabo ukuqinisekisa ukuthi umkhiqizo wokugcina usebenza ngendlela elindelekile ngaphambi kokungena emkhiqizweni ogcwele. Ngakho-ke, badinga ukusebenza ngokuthembekile emvamisa edingekayo ukuze babonise ngokunembile ukusebenza komkhiqizo wokugcina.

Isilinganiso esiphezulu sokuvama kwebhodi le-PCB le-prototyping ephenduka ngokushesha lithintwa izici ezihlukahlukene, ezihlanganisa impahla ye-PCB, ukwakheka komklamo, izici zomugqa wokudlulisela, kanye nokuba khona kwanoma yikuphi ukuphazamiseka noma imithombo yomsindo.Ukukhetha okubalulekile kubalulekile ngoba ezinye izinhlobo zama-PCB zingaphatha amaza aphezulu ngokuyimpumelelo kunezinye. Izinto ezisetshenziswa yi-High-frequency ezifana ne-Rogers 4000 Series, Teflon, noma i-PTFE laminates zivame ukusetshenziselwa ukuguqulela ngokushesha ama-PCB e-prototype ukuze kuzuzwe ukusebenza okuphakeme kumafrikhwensi aphezulu.

Isakhiwo sedizayini siphinde sidlale indima ebalulekile ekunqumeni isilinganiso esikhulu sokuvama kwebhodi le-PCB.Ukumatanisa okungafaneleki kwe-impedance, ubude bokulandelela okulawulwayo, kanye nokunciphisa ukubonakaliswa kwesignali noma i-crosstalk kuyizinyathelo ezibalulekile zokuqinisekisa ukuthi amasiginali asakazeka ngempumelelo ngaphandle kokuncishiswa. Isakhiwo se-PCB esiklanywe ngokucophelela sinciphisa ubungozi bokuhlanekezelwa kwesignali futhi sigcine ubuqotho besignali yemvamisa ephezulu.

Izici zolayini wokudlulisa, njengobubanzi bokulandelela, ukujiya, nebanga ukusuka endizeni ephansi, nazo zithinta imvamisa elinganiselwe ephezulu.Lawa mapharamitha anquma isici somugqa wokudlulisela futhi kufanele abalwe ngokucophelela ukuze afane nobuningi obudingekayo. Ukwehluleka ukwenza kanjalo kungase kubangele ukubonakaliswa kwesignali kanye nokulahlekelwa ubuqotho besignali.

Ukwengeza, ukuba khona kokuphazamiseka noma imithombo yomsindo kungathinta imvamisa elinganiselwe ephezulu yebhodi le-PCB lesibonelo esiphenduka ngokushesha.Amasu okuvikela afanele kanye nokubeka phansi kufanele kusetshenziswe ukunciphisa imiphumela yemithombo yomsindo yangaphandle nokuqinisekisa ukusebenza okuthembekile kumaza aphezulu.

Ngokuvamile, imvamisa elinganiselwe ephezulu yamabhodi e-PCB e-prototyping ephenduka ngokushesha ingasukela kuma-megahertz ambalwa kuye kumagigahertz ambalwa, kuye ngokucaciswa kwedizayini nezidingo zohlelo lokusebenza.Abakhiqizi nonjiniyela be-PCB abanolwazi kumele bathintwe ukuze kutholwe isilinganiso esihle kakhulu semvamisa sephrojekthi yakho ethile.

Ngokufigqiwe, imvamisa elinganiselwe ephezulu iyipharamitha ebalulekile uma ucubungula amabhodi we-PCB wokuphehla ngokushesha.Inquma imvamisa ephezulu kakhulu lapho isignali ingadluliswa khona ngokwethembeka ngaphandle kokuhlanekezela noma ukulahleka kwesignali. Ngokusebenzisa izinto ezinemvamisa ephezulu, kusetshenziswa idizayini efanele, ukuphatha izici zolayini wokudlulisa, kanye nokunciphisa ukuphazamiseka, onjiniyela bangaqinisekisa ukuthi amabhodi e-PCB aphenduka ngokushesha asebenza ngokwethembeka okukhulu kumafrikhwensi adingekayo.