6 Txheej FR4 ENIG Impedance Control PCB
Cov yam ntxwv uas txiav txim siab tswj qhov impedance
Tus yam ntxwv impedance ntawm PCB feem ntau yog txiav txim los ntawm nws inductance thiab capacitance, tsis kam thiab conductance.Cov yam ntxwv no yog kev ua haujlwm ntawm lub cev loj ntawm lub voj voog, qhov dielectric tas li thiab dielectric thickness ntawm PCB substrate khoom.Feem ntau, cov kab impedance ntawm PCB thaj tsam ntawm 25 txog 125Ω.Cov qauv PCB uas txiav txim siab tus nqi impedance muaj cov hauv qab no:
Dav thiab thickness ntawm sab saum toj thiab hauv qab tooj liab teeb liab kab
Dav ntawm sab saum toj thiab hauv qab tooj liab xov hlau.Cov txheej txheem txheej txheej sab hauv ntawm lub rooj sib dhos thiab Circuit Court yog 0.5oz 3/3mil rau 6oz 15/12mil tooj liab teeb liab kab, thiab sab nrauv kab sib txawv ntawm 1/3oz 3/3mil mus rau 6oz 15/12mil.
Core phaj lossis semi-kho daim ntawv thickness ntawm ob sab ntawm tooj liab hlau
Daim ntawv semi-kho tau siv los ua cov txheej txheem sib txuas los tuav tag nrho cov ntawv tseem ceeb ua ke hauv PCB.Thaum tsim cov impedance tswj PCB, lub thickness ntawm daim ntawv semi-kho ntawm ob sab ntawm lub core board yuav tsum yog tib yam.
Dielectric tas li ntawm core PCB thiab semi-kho ntawv
Yog hais tias lub dielectric qhov tsis tu ncua ntawm cov tub ntxhais phaj thiab cov ntawv semi-kho qhov sib txawv, qhov impedance kuj yuav hloov.Yog li ntawd, lub dielectric tsis tu ncua ntawm ob yuav tsum yog tib yam.
Cov khoom siv Display
Tsis Siv Neeg Plating Kab
PTH Kab
LDI
