6 Layer FR4 ENIG Impedance Control PCB
Zvinhu Zvinoona Kudzora Impedance
Iyo hunhu impedance yePCB kazhinji inotemerwa neiyo inductance uye capacitance, kuramba uye maitiro.Izvi zvinhu mabasa ehukuru hwemuviri wedunhu, iyo dielectric inogara uye dielectric ukobvu hwePCB substrate zvinhu.Kazhinji, iyo impedance yemutsetse wePCB inotangira pa25 kusvika 125Ω.Iyo PCB chimiro chinotaridza kukosha kwe impedance ine zvinotevera zvinhu:
Upamhi uye ukobvu hwepamusoro nepasi pemhangura mitsetse yechiratidzo
Upamhi hwetambo dzemhangura dzepamusoro uye dzepasi.Iyo yemukati dhizaini dhizaini yegungano uye dunhu ndeye 0.5oz 3/3mil kusvika 6oz 15/12mil mhangura chiratidzo mutsara, uye yekunze mutsara kureba kunosiyana kubva 1/3oz 3/3mil kusvika 6oz 15/12mil.
Core plate kana semi-cured sheet ukobvu pamativi ese waya yemhangura
Iyo semi-yakaporeswa pepa rinoshandiswa sechisungo chekubatanidza kubata ese epakati mabhodhi pamwechete muPCB.Paunenge uchigadzira iyo impedance control PCB, ukobvu hwehafu-yakaporeswa pepa pamativi ese epakati pebhodhi inofanira kufanana.
Dielectric inogara yepakati PCB uye semi-yakaporeswa pepa
Kana iyo dielectric inogara yepakati peplate uye iyo semi-yakaporeswa pepa zvakasiyana, iyo impedance ichachinja zvakare.Nokudaro, iyo dielectric nguva dzose yezviviri inofanira kunge yakafanana.