PCB gawo lapansi kusankha

Zomwe zimasankhidwa posankha magawano ndi kutentha (kuwotcherera ndikugwira ntchito), magetsi, zolumikizana (zinthu zowotcherera, zolumikizira), kulimba kwamphamvu ndi kachulukidwe ka dera, ndi zina zambiri, zotsatiridwa ndi zinthu zakuthupi ndi kukonza. Chonde onani fomu ili kuti mumve tsatanetsatane:

Dia Chithunzi chosankha gawo lapansi (gwero: gwero “GJB 4057-2000 Printed Circuit Board Design Zofunikira Pazida Zankhondo Zankhondo”)

Kufotokozera dzina

FR-4

Fr-4 ndi nambala yolimbana ndi lawi lamoto, lomwe limaimira tanthauzo la utomoni pambuyo poti dziko loyaka liyenera kuzimitsa zomwe zakuthupi, si dzina lakuthupi, koma gulu lazinthu.

Kutentha kwa tg / galasi

Mtengo wa Tg umatanthawuza kutentha komwe zinthuzo zimasinthira kuchoka pagalasi lolimba kwambiri kupita kumalo olimba osinthasintha. Dziwani kuti zinthu zakuthupi zimasintha pamwamba pa Tg.

CTI

CTI: Kuyerekeza Kutsata Index, chidule cha Index Index Poyerekeza.

Kutanthauza: ndiye chisonyezo chotsutsana ndi kutayikira. Mukamagwiritsa ntchito magetsi pamwamba pazotetezera, pangani madontho a electrolytic agwere pamwamba pazomwe zidapangidwa pakati pa maelekitirodi, ndikuwunika voliyumuyo mpaka kuwonongeka konse kutayike.

Mulingo wa CTI: mulingo wa CTI kuyambira 0 mpaka 5. Kuchuluka kwa chiwerengerocho, kumakulanso kukana kutayikira.

PI

Polyimide (PI) ndi chimodzi mwa zinthu organic polima ndi ntchito yabwino kwambiri.Kutentha kwake kwamphamvu mpaka 400 ℃ pamwambapa, kutentha kwakanthawi kogwiritsa ntchito -200 ~ 300 ℃, komwe kulibe kusungunuka kowonekera, magwiridwe antchito apamwamba, 103 hz dielectric mosalekeza 4.0, kutaya kwa dielectric kokha 0.004 ~ 0.007, a F kwa H.

CE

(1) CE cyanate resin ndi mtundu watsopano wazinthu zamagetsi komanso zotetezera, zomwe ndi chimodzi mwazida zofunika kwambiri pazida zamagetsi zamagetsi komanso kulumikizana kwa ma microwave. Ndi utoto woyenera wa matrix wa radome. Chifukwa cha kutentha kwake kwamatenthedwe komanso kutentha kwa kutentha, kukana kozungulira kokwanira kozama ndi zina zabwino, utomoni wa CE wakhala chinthu chabwino kwambiri cha matrix popanga mafupipafupi, magwiridwe antchito, mabatani azamagetsi apamwamba kwambiri; Kuphatikiza apo, utomoni wa CE ndichinthu chabwino chopangira zinthu.

(2) CE utomoni atha kugwiritsidwa ntchito popanga gulu lankhondo, ndege, malo ogulitsira, malo oyenda, monga mapiko, zipolopolo zonyamula, ndi zina zambiri, komanso zitha kupangidwa kukhala malo osungira zinthu zakuthupi omwe amagwiritsidwa ntchito kwambiri.

(3) utomoni wa CE umagwirizana bwino, ndipo utomoni wa epoxy, polyester yopanda mafuta ndi kuphatikizira kwina kumatha kusintha kutentha kwa kutentha ndi makina azinthuzo, zitha kugwiritsidwanso ntchito kusintha ma resin ena, omwe amagwiritsidwa ntchito ngati zomatira, zokutira, mapulasitiki opangidwa ndi thovu, zopangira zipangizo zofalitsa, etc.

(4) CE ndichinthu chabwino chopatsira ndi kupititsa patsogolo komanso kuwonekera bwino.

PTFE

Poly Tetra fluoroethylene (PTFE), omwe amadziwika kuti “zokutira zopanda ndodo” kapena “zosavuta kuyeretsa”. Nkhaniyi ili ndi mawonekedwe a kukana kwa asidi ndi alkali, kukana zosungunulira zosiyanasiyana zam’madzi ndi kutentha kwakukulu.

Kutentha kwakukulu: kutentha kwa nthawi yayitali kwa madigiri 200 ~ 260;

Kutentha kotsika: akadali ofewa pa -100 madigiri;

Dzimbiri kukana: amatha aqua regia ndi zosungunulira zonse organic;

Kukaniza nyengo: moyo wokalamba kwambiri wamapulasitiki;

Mafuta okwera kwambiri: koyefishienti yotsika kwambiri yamapulasitiki (0.04);

Zosavomerezeka: kukhala ndi vuto laling’ono kwambiri lazolimba popanda kutsatira chilichonse;

Osakhala poizoni: kulowetsa thupi; Kuchita bwino kwamagetsi, ndiye C yosungunulira zinthu zabwino, nyuzipepala yayikulu ingaletse 1500V yamagetsi akulu; Ndi yosalala kuposa ayezi.

Kaya ndi kapangidwe ka PCB wamba, kapenanso kayendedwe kabwino, kapangidwe ka PCB yothamanga kwambiri, kusankha gawo lapansi ndichidziwitso chofunikira, tiyenera kudziwa. (Kuphatikiza PCB).