Kev piav qhia ntxaws! High zaus thiab ceev PCB khoom
Nov 25, 2021
Thaum xaiv lub substrate rau high-frequency Circuit Court PCBs, variation yam ntxwv ntawm cov khoom DK ntawm txawv zaus yuav tsum tau kawm tshwj xeeb. Rau cov kev cai uas tsom mus rau cov teeb liab ceev ceev lossis cov yam ntxwv impedance tswj, tsom rau DF thiab nws cov kev ua tau zoo nyob rau hauv zaus, kub thiab av noo. Niaj hnub no, Taike Electronics coj koj me ntsis kev paub txog cov khoom siv hluav taws xob ntau zaus thiab siab ceev PCB pawg thawj coj saib!
High zaus thiab kev kub ceev PCB board
Nyob rau hauv cov ntaub ntawv ntawm kev hloov zaus, DK thiab DF qhov tseem ceeb ntawm cov khoom siv substrate sib txawv heev. Tshwj xeeb tshaj yog nyob rau hauv ntau zaus ntawm 1MHz mus rau 1 GHz, lawv cov DK thiab DF qhov tseem ceeb hloov ntau pom tseeb. Piv txwv li, tus nqi DK ntawm cov khoom siv zoo tib yam epoxy iav fiber ntau cov ntaub ntawv (ib txwm FR-4) yog 4.7 ntawm lmhz zaus, thiab tus nqi DK dhau los ua 4.19 ntawm lghz zaus. Tshaj li lghz, kev hloov pauv ntawm DK tus nqi yog maj mam. Qhov sib txawv ntawm nws qhov kev hloov pauv yog txo qis nrog qhov nce ntawm zaus (tab sis qhov loj ntawm kev hloov pauv me me). Piv txwv li, ntawm l0ghz, tus nqi DK ntawm FR-4 feem ntau yog 4.15. Rau cov ntaub ntawv substrate nrog high-speed thiab high-frequency yam ntxwv, tus nqi DK hloov me ntsis nrog zaus. Raws li qhov hloov pauv zaus ntawm lmhz rau lghz, DK tseem nyob hauv thaj tsam ntawm 0.02. Ntawm qhov sib txawv ntawm qhov qis mus rau siab, tus nqi DK zoo li txo qis me ntsis.
Raws li kev cuam tshuam ntawm kev hloov pauv ntau zaus (tshwj xeeb tshaj yog nyob rau hauv ntau zaus), cov khoom siv hluav taws xob tsis zoo (DF) ntawm cov khoom siv substrate dav dav hloov ntau dua li DK. Txoj cai ntawm kev hloov pauv nce ntxiv. Yog li ntawd, thaum soj ntsuam cov yam ntxwv ntawm high-frequency ntawm cov ntaub ntawv substrate, lub hom phiaj ntawm kev tshawb fawb yog qhov kev hloov ntawm nws cov nqi DF. Rau cov ntaub ntawv substrate nrog high-speed thiab high-frequency yam ntxwv, nyob rau hauv cov nqe lus ntawm high-frequency hloov cov yam ntxwv, muaj ob hom sib txawv ntawm cov khoom siv substrate: ib qho yog tias nws (DF) tus nqi hloov me ntsis nrog zaus. Lwm qhov laj thawj yog tias txawm hais tias qhov sib txawv ntawm qhov sib txawv zoo ib yam li cov khoom siv substrate, nws (DF) tus nqi qis dua.
Cov saum toj no yog qhov kev paub me me txog cov khoom siv hluav taws xob ntau zaus thiab kev kub ceev PCB pawg thawj coj saib! Vam tias nws yuav pab tau koj!