I-PTFE PCB enezingqimba ezi-2 ngokwezifiso
Ukucaciswa komkhiqizo:
| Izinto eziyisisekelo: | I-FR4 TG170 |
| Ubukhulu be-PCB: | 1.8+/-10%mm |
| Ukubalwa Kwesendlalelo: | 8L |
| Ukuqina Kwethusi: | 1/1/1/1/1/1/1/1/1 oz |
| Ukwelashwa kwendawo: | ENIG 2U” |
| Imaski yeSolder: | Okuluhlaza okucwebezelayo |
| Isikrini sikasilika: | Emhlophe |
| Inqubo Ekhethekile | Ukungcwatshwa nokungaboni |
Imibuzo Evame Ukubuzwa
I-PTFE iyi-synthetic thermoplastic fluoropolymer futhi ingeyesibili esetshenziswa kakhulu i-PCB laminate impahla. Inikeza izakhiwo ze-dielectric ezingaguquki ekunwebeni kwe-coefficient ephezulu kune-FR4 evamile.
I-lubricant ye-PTFE inikeza ukumelana nogesi okuphezulu. Lokhu kwenza ukuthi ikwazi ukusetshenziswa ezintambo zikagesi namabhodi esekethe.
Kumafrikhwensi e-RF ne-Microwave, i-dielectric constant ye-standard FR-4 Material (approx. 4.5) ivamise ukuba phezulu kakhulu, okuholela ekulahlekeni kwesignali okuphawulekayo phakathi nokudlulisa kuyo yonke i-PCB. Ngenhlanhla, izinto ze-PTFE ziziqhayisa ngamavelu angaguquki e-dielectric aphansi njengo-3.5 noma ngaphansi, okuwenza alungele ukunqoba imikhawulo yesivinini esikhulu se-FR-4.
Impendulo elula ukuthi ziyafana: I-Teflon™ yigama lomkhiqizo we-PTFE (Polytetrafluoroethylene) futhi yigama lophawu lokuhweba elisetshenziswa inkampani yakwaDu Pont kanye nezinkampani ezingaphansi kwayo (iKinetic eyaqala ukubhalisa uphawu lokuhweba & Chemours okungabanikazi bawo njengamanje. yona).
Izinto ze-PTFE ziqhayisa ngamavelu angaguquki e-dielectric aphansi njengo-3.5 noma ngaphansi, okuwenza alungele ukunqoba imikhawulo yesivinini esikhulu se-FR-4.
Ngokuvamile, imvamisa ephezulu ingachazwa njengemvamisa engaphezu kwe-1GHz. Njengamanje, impahla ye-PTFE isetshenziswa kabanzi ekukhiqizeni i-PCB eyimvamisa ephezulu, ibizwa nangokuthi i-Teflon, okuyimvamisa eba ngaphezu kuka-5GHz. Ngaphandle kwalokho, i-FR4 noma i-PPO substrate ingasetshenziselwa imvamisa yomkhiqizo phakathi kwe-1GHz~10GHz. Lawa ma-substrates amathathu aphezulu anomehluko ongezansi:
Mayelana nezindleko ze-laminate ze-FR4, i-PPO ne-Teflon, i-FR4 iyona eshibhe kakhulu, kuyilapho i-Teflon ibiza kakhulu. Ngokuya nge-DK, DF, ukumuncwa kwamanzi kanye nesici sokuvama, iTeflon iyona ehamba phambili. Uma izinhlelo zokusebenza zomkhiqizo zidinga imvamisa engaphezu kuka-10GHz, singakhetha kuphela i-Teflon PCB substrate ukuthi yenziwe. Ukusebenza kwe-Teflon kungcono kakhulu kunamanye ama-substrate, Nokho, i-Teflon substrate inesimo esibi sezindleko eziphezulu kanye nempahla enkulu ekwazi ukumelana nokushisa. Ukuze kuthuthukiswe ukuqina kwe-PTFE nomsebenzi wempahla evimbela ukushisa, inombolo enkulu ye-SiO2 noma ingilazi ye-fiber njengento yokugcwalisa. Ngakolunye uhlangothi, ngenxa ye-molecule ye-inertia yezinto ze-PTFE, okungekho lula ukuhlanganisa ne-foil yethusi, ngakho-ke, idinga ukwenza ukwelashwa okukhethekile kwendawo ohlangothini lwenhlanganisela. Mayelana nokwelashwa okuhlanganisiwe kwendawo, ngokuvamile kusetshenziswa ukubotshwa kwamakhemikhali endaweni ye-PTFE noma ukushumeka kwe-plasma ukuze kuhlanganiswe nobulukhuni bobuso noma ukwengeza ifilimu yokunamathela eyodwa phakathi kwe-PTFE nefoyili yethusi, kodwa lokhu kungase kube nomthelela ekusebenzeni kwe-dielectric.
Izigaba zemikhiqizo
-
I-PCB eqinile enezendlalelo ezi-2 enemaski ebomvu ye-solder
-
Oda i-pcb evela e-china pcb yokwenziwa kwenkonzo ye-hd...
-
I-Consumer Electronics prototype pcb board manufa...
-
fast pcb prototyping service pcb prototype china
-
Ibhodi lokukhanyisa elizenzakalelayo le-PCB led...
-
Isibani semoto kagesi PCB prototype circuit ...