PCB zabin substrate

La’akari na farko don zaɓar substrates shine zafin jiki (walda da aiki), kaddarorin lantarki, haɗin gwiwa (abubuwan walda, masu haɗawa), ƙarfin tsari da yawa na kewaye, da sauransu, biye da kayan aiki da farashin sarrafawa. Da fatan za a koma zuwa adadi mai zuwa don cikakkun bayanai:

Agram Zaɓin zaɓi na ƙasa (tushen: tushen “GJB 4057-2000 Buƙatun buƙatun ƙirar Circuit Board for Equipment electronic Equipment”)

Bayanin suna

FR-4

Fr-4 lambar aji ce mai jurewa da wuta, wanda ke wakiltar ma’anar kayan resin bayan yanayin konewa dole ne ya iya kashe kansa da takamaiman kayan abu, ba sunan abu bane, amma aji ne.

Tg/ gilashin canza zafin jiki

Darajar Tg tana nufin zazzabi wanda kayan ke canzawa daga mafi girman yanayin gilashi zuwa mafi roba da sassauƙa. Lura cewa kaddarorin kayan suna canzawa sama da Tg.

CTI

CTI: Index Tracking Comparative, taƙaitaccen Index Tracking Index.

Ma’ana: ita ce mai nuna juriya mai fita. A cikin yanayin yin amfani da wutar lantarki zuwa saman abin da ke ruɓewa, sanya ɗigon ruwa ya faɗi a saman samfurin da aka ƙera tsakanin wayoyin, kuma a kimanta ƙarfin wutar lantarki har sai an sami ɓarkewar ɓarna.

Matsayin CTI: matakin CTI ya kasance daga 0 zuwa 5. Ƙaramin lamba, mafi girman juriya na ɓarna.

PI

Polyimide (PI) yana ɗaya daga cikin kayan aikin polymer na halitta tare da mafi kyawun aikin.Matsakaicin zafin zafinsa har zuwa 400 ℃ sama, amfani da kewayon zafin jiki na -200 ~ 300 ℃, wani ɓangare na babu ma’anar narkewa, babban aikin rufi, 103 hz dielectric akai -akai 4.0, asarar dielectric kawai 0.004 ~ 0.007, mallakar F da H.

CE

(1) resin cyanate na CE sabon nau’in kayan lantarki ne da kayan rufewa, wanda shine ɗayan mahimman kayan aikin a fagen kayan lantarki da fasahar sadarwa ta microwave. Yana da kayan matrix mai mahimmanci don radome. Saboda kyakkyawan kwanciyar hankali na zafi da juriya mai zafi, ƙarancin daidaitaccen layin faɗaɗawa da sauran fa’idodi, resin CE ya zama kyakkyawan kayan matrix don samar da madaidaiciyar madaidaiciya, babban aiki, madaidaicin allon buga lantarki mai inganci; Bugu da ƙari, resin CE kayan abu ne mai kyau.

(2) Ana iya amfani da resin CE don samar da sojoji, jirgin sama, sararin samaniya, sassan tsarin kewayawa, kamar fuka -fuki, bawon jirgi, da dai sauransu, amma kuma ana iya yin su cikin kayan aikin sandwich kumfa na sararin samaniya.

(3) resin CE yana da jituwa mai kyau, kuma resin epoxy, polyester wanda ba a cika cikawa da sauran copolymerization na iya haɓaka juriya mai zafi da kayan aikin kayan, ana kuma iya amfani da su don gyara wasu resins, waɗanda aka yi amfani da su azaman adhesives, sutura, filastik kumfa mai haɗawa, wucin gadi kayan aikin jarida, da dai sauransu.

(4) AZ shine kayan watsawa mai kyau tare da babban watsawa da kyakkyawar nuna gaskiya.

ptfe

Poly Tetra fluoroethylene (PTFE), wanda aka fi sani da “rufi mara sanda” ko “mai sauƙin tsaftace abu”. Wannan kayan yana da halayen acid da juriya na alkali, juriya ga sauran kayyakin Organic da yawan zafin jiki.

Babban zafin juriya: zazzabi mai amfani na dogon lokaci na 200 ~ 260 digiri;

Ƙananan juriya: har yanzu yana da taushi a -100 digiri;

Tsarin juriya: yana iya samun ruwa na ruwa da duk sauran abubuwa masu narkewa.

Tsayayyar yanayi: mafi kyawun tsufa na robobi;

Babban lubrication: mafi ƙarancin coefficient na robobi (0.04);

Nonviscous: samun ƙaramin tashin hankali na ƙasa mai ƙarfi ba tare da bin kowane abu ba;

Non-guba: jiki inert; Kyakkyawan aikin lantarki, shine ingantaccen kayan rufin aji na C, wani kauri na jarida na iya toshe babban ƙarfin lantarki na 1500V; Yana da santsi fiye da kankara.

Ko ƙirar PCB ce ta yau da kullun, ko madaidaiciya, ƙirar PCB mai sauri, zaɓin substrate muhimmin ilimi ne, muna buƙatar ƙwarewa. (PCB mai haɗawa).