6 Layer FR4 ENIG Impedance Control PCB
Zinthu Zomwe Zimatsimikizira Kusokoneza Kolamulira
The Impedans khalidwe la PCB zambiri zimatsimikiziridwa ndi inductance ndi capacitance, kukana ndi khalidwe.Zinthu izi ndi ntchito za kukula kwa dera, makulidwe a dielectric ndi dielectric a PCB substrate material.Nthawi zambiri, kutsekeka kwa mzere wa PCB kumachokera ku 25 mpaka 125Ω.Mapangidwe a PCB omwe amatsimikizira mtengo wa impedance amakhala ndi izi:
M'lifupi ndi makulidwe a mizere yamkuwa pamwamba ndi pansi
Kukula kwa mawaya amkuwa pamwamba ndi pansi.The mkati wosanjikiza ndondomeko osiyanasiyana msonkhano ndi dera ndi 0.5oz 3/3mil kuti 6oz 15/12mil mkuwa chizindikiro mzere, ndi akunja mzere mtunda zimasiyanasiyana 1/3oz 3/3mil kuti 6oz 15/12mil.
Kukhuthala kwa mbale kapena semi-cured sheet makulidwe mbali zonse za waya wamkuwa
Semi-cured sheet imagwiritsidwa ntchito ngati chomangira chomangira matabwa onse apakati mu PCB.Mukamapanga PCB yowongolera, makulidwe a pepala lopukutidwa mbali zonse ziwiri za board yayikulu ayenera kukhala ofanana.
Dielectric yosasinthasintha ya PCB yapakati ndi pepala lochiritsidwa
Ngati kusinthasintha kwa dielectric kwa mbale yapachiyambi ndi pepala lopukutidwa ndi theka ndizosiyana, kusokoneza kumasinthanso.Choncho, dielectric zonse ziwirizi ziyenera kukhala zofanana.