Rogers 5880 laminate imapangidwa ndi zida zapamwamba komanso zodalirika zomwe zimafanana ndi Rogers, zomwe zimapangitsa kuti Rogers apambane mphotho zofunika kuchokera kwa opanga zinthu zapamwamba kwambiri. M’mapangidwe ena, zida za dielectric za PCB ndizofunikira kwambiri. Kaya ndi liwiro lalikulu, RF, microwave kapena mafoni, kasamalidwe ka mphamvu ndiye chinsinsi. Mupeza kuti mawonekedwe a dielectric a board board mu prototype ndiofunika kwambiri kuposa omwe sanaperekedwe ndi standard FR-4. Ife tikudziwa. Ichi ndichifukwa chake timakulitsa pcbexpress ndi rogers5880 dielectric zida. Zida zatsopano zotayika za dielectric zimatanthawuza magwiridwe antchito apamwamba pamachitidwe ofunikira a PCB.

Chifukwa chiyani Rogers dielectric material?
FR-4 zinthu ndiye muyezo woyambira wa Mtengo wa PCB, yomwe ingathe kukwaniritsa bwino pakati pa mtengo, mphamvu zopangira, mphamvu zamagetsi ndi kukhazikika. Koma ngati mawonekedwe amagetsi ndi magwiridwe antchito apamwamba ndiye maziko a mapangidwe anu, Rogersmaterials ndiye chisankho chanu chabwino chifukwa:
Chepetsani kutayika kwa dielectric
Chizindikiro chochepa cha kugwiritsa ntchito mphamvu
Mitundu yayikulu ya DK (dielectric constant) (2.55-10.2)
Kupanga dera lotsika mtengo
Ntchito zochepa zotulutsa mpweya

Zida zamagetsi
Zida za dielectric ndizinthu zopanda ma conductivity, zomwe zimagwiritsidwa ntchito ngati zosanjikiza mu PCB. Zina mwa dielectric ndi mica, ndipo zina za dielectric ndi mica, metal oxide, ndi pulasitiki. Kutsika kwa kutaya kwa dielectric (mphamvu yotayika mwa mawonekedwe a kutentha), mphamvu ya dielectric imakhala yothandiza kwambiri. Ngati voteji mu dielectric chuma chapamwamba kwambiri, ndiye kuti, pamene electrostatic munda umakhala wamphamvu, zinthu mwadzidzidzi amayamba kuchita panopa. Chodabwitsa ichi chimatchedwa dielectric breakdown.
Zithunzi za rtduroid5880
Mwayi otsika kwambiri pakutayika kwazinthu zilizonse zamagetsi zolimbitsa PTFE
Kuchepa kwa chinyezi
Isotropy
Kuchita kwamagetsi ndi ma frequency ofananira
Kukana kwamphamvu kwamankhwala, kuphatikiza zosungunulira ndi ma reagents osindikizira ndi zokutira
Malo aubwenzi
Pre mimba (preg)
Kutsika kwa “pre impregnated composite fiber” ndikupanga PCB, Pre PregS, zidzakhudza magwiridwe antchito a bolodi losindikizidwa. Mawu omwe amagwiritsidwa ntchito pamakampani opanga ma PCB kufotokoza zinthu za zomatira zomwe zimagwiritsidwa ntchito kulumikiza zigawo, multilayer PCB.
Rtduroid5880 high frequency laminate kuchokera ku Rogers
Rogers5880 mkulu pafupipafupi laminate mndandanda utenga PTFE gulu analimbitsa galasi CHIKWANGWANI. Ma microfibers awa amakhazikika pamawerengero kuti apititse patsogolo ubwino wa fiber ndikupereka chitsogozo chofunikira kwambiri kwa opanga madera ndi ntchito zomaliza. Kukhazikika kwa dielectric kwa ma laminate apamwamba kwambiriwa ndikotsika kwambiri pazinthu zonse, ndipo kutayika kwa dielectric kumawapangitsa kukhala oyenera kugwiritsa ntchito ma frequency / Broadband komwe kubalalitsidwa ndi kutayika kuyenera kuchepetsedwa. Chifukwa cha mayamwidwe ake otsika kwambiri, rtduroid5880 ndiyoyenera kugwiritsidwa ntchito m’malo achinyezi kwambiri.

Zida zapamwambazi zimatha kudulidwa, kudula ndi kukonzedwa kuti apange zosungunulira zilizonse ndi reagent zomwe zimagwiritsidwa ntchito pama board ozungulira kapena m’mphepete ndi electroplating. Amakhala ndi kutayika kwamagetsi otsika kwambiri pazinthu zilizonse zolimbikitsidwa za PTFE, komanso amakhala ndi mayamwidwe otsika kwambiri komanso ndi isotropic. Iwo ali yunifolomu makhalidwe magetsi pafupipafupi. Ma frequency amtundu wa rtduroid5880 amagwiritsidwa ntchito m’makampani oyendetsa ndege, ma microstrip ndi ma stripline, ma millimeter wave system application omwe amagwiritsidwa ntchito mu zida zankhondo, tinyanga ta missile system, mawonetsero apawayilesi a digito ndi zina. The rtduroid5880 yodzazidwa ndi PTFE pawiri idapangidwa kuti igwiritse ntchito mosamalitsa mabwalo ophatikizika ndi ma microcircuits.

Zinthu za Rogerpcb zili ndi mtengo wotsika kwambiri wa DK wa laminate wamkuwa womwe ukupezeka pamsika. Chifukwa cha kutsika kwake kwa dielectric 1.96 pa 10GHz, rtduroid5880 imathandizira kugwiritsa ntchito ma frequency a ma microwave pamlingo wa millimeter, komwe kubalalitsidwa ndi kutayika kwa dera kuyenera kuchepetsedwa. Ndi gulu limodzi lodzaza, lopepuka la PTFE lokhala ndi kachulukidwe kakang’ono kwambiri (1.37G / cm3) komanso kuchuluka kocheperako kowonjezera kwamafuta (CTE) pa z-axis. Itha kupereka mabowo apamwamba kwambiri (PTH) ndikukwaniritsa malipiro apamwamba. Kuphatikiza apo, dielectric yosasinthika kuchokera ku mbale kupita pagulu imakhala yofanana komanso yosasinthasintha, ndipo z-axis tcdk ndiyotsika ngati + 22ppm / ° C.