A yau, zan gaya muku menene ma'anar TG, kuma menene fa'idodin amfani da babban TG PCB.

Babban Tg yana nufin juriya mai zafi. Allolin PCB tare da babban canjin Tg daga "jinin gilashi" zuwa "yanayin rubbery" lokacin da zafin jiki ya tashi zuwa wani kofa. Ana kiran wannan zafin jiki da yanayin canjin gilashin (Tg) na allo. Mahimmanci, Tg shine mafi girman zafin jiki (℃) a cikin abin da kayan tushe ke kiyaye rigidity. Wannan ya yi daidai da abin da ya faru inda talakawa PCB substrate kayan, a karkashin high yanayin zafi, ci gaba da sha softening, nakasawa, narkewa, da dai sauransu, da kuma bayyana a matsayin kaifi ƙi a inji da lantarki Properties, wanda bi da bi yana rinjayar da sabis na samfurin. . Yawanci, Tg allunan suna sama da 130 ℃, high Tg yawanci ya fi 170 ℃, da matsakaici Tg ne game da girma fiye da 150 ℃. PCB alluna tare da Tg≥170 ℃ yawanci ake magana a kai a matsayin high Tg PCBs; mafi girma da Tg na substrate, mafi kyawun juriya na zafi, juriya na danshi, juriya na sinadarai, da halayen kwanciyar hankali na allon kewayawa, wanda aka inganta. Mafi girman ƙimar TG, mafi kyawun aikin juriya na hukumar, musamman a cikin hanyoyin da ba su da gubar inda aka fi amfani da babban Tg.

Tare da saurin bunƙasa masana'antar lantarki, musamman samfuran lantarki waɗanda ke wakilta ta kwamfutoci, waɗanda ke motsawa zuwa babban aiki da nau'i-nau'i, akwai buƙatar juriya mai girma a cikin kayan aikin PCB. Fitowar da haɓaka fasahar haɓaka haɓakar girma kamar SMT da CMT suna sanya ƙaramin ƙarfi, sarrafa layi mai kyau, da ɓarke ​​​​na allunan PCB suna ƙara dogaro da tsayin daka na zafi na substrate.

Saboda haka, bambancin dake tsakanin FR-4 na kowa da kuma Tg mai girma: A karkashin yanayin zafi, musamman bayan shayar da danshi da dumama, akwai wasu bambance-bambance a cikin ƙarfin injiniya, kwanciyar hankali, mannewa, shayar ruwa, bazuwar thermal, da thermal fadada kayan. Babban samfuran Tg sun fi mahimmanci fiye da kayan aikin PCB na yau da kullun.

Idan kuna son ƙarin koyo game da High TG PCB, kawai ɗauki odarsa tare da mu. Kullum muna nan muna jiran ku.