Custom 2-layer PTFE PCB
Tlhaloso ea Sehlahisoa:
| Boitsebiso ba Motheo: | FR4 TG170 |
| Botenya ba PCB: | 1.8+/-10%mm |
| Palo ea Lera: | 8L |
| Botenya ba Koporo: | 1/1/1/1/1/1/1/1/1 oz |
| Kalafo ea Bokaholimo: | ENIG 2U” |
| Mask oa solder: | Botala bo benyang |
| Silkscreen: | Bosoeu |
| Mokhoa o Khethehileng | E patoa le ho foufala |
FAQs
PTFE ke thermoplastic fluoropolymer ea maiketsetso 'me ke thepa ea bobeli e sebelisoang ka ho fetisisa ea PCB ea laminate.E fana ka thepa e tsitsitseng ea dielectric ka katoloso e phahameng ea coefficient ho feta FR4 e tloaelehileng.
PTFE lubricant e fana ka khanyetso e phahameng ea motlakase.Sena se nolofalletsa hore e sebelisoe ho sebelisoa lithapo tsa motlakase le liboto tsa potoloho.
Ho RF le Microwave frequencies, dielectric constant tsa standard FR-4 Material (approx. 4.5) hangata e phahame haholo, e bakang tahlehelo e kholo ea matšoao nakong ea phetisetso ho pholletsa le PCB.Ka lehlohonolo, lisebelisoa tsa PTFE li ithorisa ka litekanyetso tsa kamehla tsa dielectric tse tlase ho 3.5 kapa ka tlase, li li etsa tse loketseng ho hlola mefokolo ea lebelo le holimo ea FR-4.
Karabo e bonolo ke hore ke ntho e le 'ngoe: Teflon™ ke lets'oao la PTFE (Polytetrafluoroethylene) mme ke lets'oao la lets'oao le sebelisoang ke khamphani ea Du Pont le likhamphani tse tlatsetso ea eona (Kinetic e ngolisitseng lets'oao la pele le Chemours eo hajoale e leng mong'a eona. eona).
Lisebelisoa tsa PTFE li ithorisa ka litekanyetso tsa kamehla tsa dielectric tse tlase ho 3.5 kapa ka tlase, li etsa hore e be tse loketseng ho hlola mefokolo ea lebelo le holimo ea FR-4.
Ka kakaretso, maqhubu a phahameng a ka hlalosoa e le maqhubu a fetang 1GHz.Hajoale, lisebelisoa tsa PTFE li sebelisoa haholo tlhahisong ea PCB e phahameng, e boetse e bitsoa Teflon, eo hangata e leng kaholimo ho 5GHz.Ntle le moo, substrate ea FR4 kapa PPO e ka sebelisoa ho frequency ea sehlahisoa har'a 1GHz ~ 10GHz.Li-substrates tsena tse tharo tse phahameng li na le phapang e ka tlase:
Mabapi le litšenyehelo tsa laminate tsa FR4, PPO le Teflon, FR4 ke eona e theko e tlaase, ha Teflon e le eona e theko e boima ka ho fetisisa.Mabapi le DK, DF, ho monya metsi le sebopeho sa khafetsa, Teflon ke eona e ntle ka ho fetisisa.Ha lits'ebetso tsa sehlahisoa li hloka khafetsa ho feta 10GHz, ke rona feela re ka khethang karolo ea Teflon PCB ho e etsa.Ts'ebetso ea Teflon e ntle haholo ho feta li-substrate tse ling, Leha ho le joalo, substrate ea Teflon e na le bothata ba theko e phahameng le thepa e kholo e thibelang mocheso.Ho ntlafatsa PTFE e thata le ts'ebetso ea thepa e thibelang mocheso, palo e kholo ea SiO2 kapa fiber glass e le thepa ea ho tlatsa.Ka lehlakoreng le leng, ka lebaka la inertia ea molek'hule ea lisebelisoa tsa PTFE, tseo ho seng bonolo ho li kopanya le foil ea koporo, ka hona, ho hlokahala hore ho etsoe phekolo e khethehileng ea holim'a lehlakoreng la motsoako.Mabapi le phekolo e kopantsoeng ea holim'a metsi, hangata ho sebelisoa lik'hemik'hale tsa lik'hemik'hale holim'a PTFE holim'a PTFE kapa plasma etching ho kopanyelletsa le holimo holimo kapa ho eketsa filimi e le 'ngoe ea sekhomaretsi pakeng tsa PTFE le foil ea koporo, empa tsena li ka ama ts'ebetso ea dielectric.
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