Maʻamau 2-papa PTFE PCB
Hōʻike huahana:
| Mea Kumu: | FR4 TG170 |
| Mānoanoa PCB: | 1.8+/-10%mm |
| Ka helu papa: | 8L |
| Mānoanoa keleawe: | 1/1/1/1/1/1/1/1 oz |
| Lapaʻau ʻili: | ENIG 2U” |
| Palekana Solder: | ʻōmaʻomaʻo ʻōlinolino |
| Silkscreen: | Keʻokeʻo |
| Kaʻina Kūikawā | Kanu & makapo vias |
FAQs
ʻO PTFE kahi fluoropolymer thermoplastic synthetic a ʻo ia ka lua o ka mea maʻamau PCB laminate mea.Hāʻawi ia i nā waiwai dielectric maʻamau i kahi hoʻonui coefficient kiʻekiʻe ma mua o FR4 maʻamau.
Hāʻawi ka PTFE lubricant i ke kūpaʻa uila kiʻekiʻe.Hiki iā ia ke hoʻohana no ka hoʻohana ʻana i nā uwea uila a me nā papa kaapuni.
Ma nā alapine RF a me Microwave, ʻoi aku ka kiʻekiʻe o ka dielectric mau o ka maʻamau FR-4 Material (approx. 4.5) i ka hopena o ka nalowale o ka hōʻailona nui i ka wā o ka hoʻouna ʻana i ka PCB.ʻO ka mea pōmaikaʻi, ke hoʻokiʻekiʻe nei nā mea PTFE i nā waiwai mau dielectric ma lalo o 3.5 a i lalo paha, e hoʻolilo iā lākou i mea kūpono no ka lanakila ʻana i nā palena kiʻekiʻe o FR-4.
ʻO ka pane maʻalahi, ʻo ia ka mea like: Teflon ™ he inoa inoa no PTFE (Polytetrafluoroethylene) a he inoa inoa inoa inoa i hoʻohana ʻia e ka hui ʻo Du Pont a me kāna mau ʻoihana hui (Kinetic nāna i hoʻopaʻa inoa mua i ka hōʻailona & Chemours nona kēia manawa. ia).
Ke hoʻokiʻekiʻe nei nā mea PTFE i nā waiwai maʻamau dielectric ma lalo o 3.5 a i lalo paha, e hoʻolilo iā lākou i mea kūpono no ka lanakila ʻana i nā palena kiʻekiʻe o FR-4.
Ma ka ʻōlelo maʻamau, hiki ke wehewehe ʻia ke alapine kiʻekiʻe e like me ke alapine ma luna o 1GHz.I kēia manawa, hoʻohana nui ʻia nā mea PTFE i ka hana PCB kiʻekiʻe, ua kapa ʻia ʻo Teflon, ʻo ia ka mea maʻamau ma luna o 5GHz.Ma waho aʻe, hiki ke hoʻohana ʻia ka substrate FR4 a i ʻole PPO i ke alapine huahana ma waena o 1GHz ~ 10GHz.Aia nā ʻokoʻa ma lalo o kēia mau substrate alapine kiʻekiʻe ʻekolu:
E pili ana i ke kumukūʻai laminate o FR4, PPO a me Teflon, ʻo FR4 ka mea liʻiliʻi loa, ʻoiai ʻo Teflon ka mea kūʻai nui loa.Ma nā ʻōlelo o DK, DF, ka hoʻoheheʻe wai a me ka hiʻohiʻona pinepine, ʻo Teflon ka mea maikaʻi loa.Ke koi nei nā noi huahana i ka pinepine ma luna o 10GHz, hiki iā mākou ke koho i ka substrate Teflon PCB e hana.ʻOi aku ka maikaʻi o ka hana ʻana o Teflon ma mua o nā substrate ʻē aʻe, akā naʻe, ʻo ka Teflon substrate ka hemahema o ke kumukūʻai kiʻekiʻe a me ka waiwai nui e pale ana i ka wela.No ka hoʻomaikaʻi ʻana i ka PTFE stiffness a me ka hana waiwai pale wela, kahi helu nui o SiO2 a i ʻole aniani fiber e like me ka mea hoʻopiha.Ma ka lima 'ē aʻe, ma muli o ka mole inertia o ka PTFE mea, ka mea,ʻaʻole maʻalahi e hui me ke keleawe foil, pela, pono e hana i ka kūikawā ili lapaʻau ma ka hui 'aoʻao.No ka hoʻomaʻamaʻa ʻana i ka ʻili, hoʻohana maʻamau i ke kālai kemika ma ka ʻili PTFE a i ʻole ka etching plasma e hoʻohui i ka ʻinoʻino o ka ʻili a i ʻole e hoʻohui i hoʻokahi kiʻi ʻoniʻoni ma waena o ka PTFE a me ka pahu keleawe, akā hiki i kēia ke hoʻololi i ka hana dielectric.
