A new technique to extract intrinsic and extrinsic base-collector capacitances of bipolar transistors using Y-parameter equations

A new method utilizing the frequency-response of Y-parameter equations is developed to extract intrinsic and extrinsic base-collector capacitances of bipolar junction transistors independently, without any extraction of the base resistance and total base-collector capacitance. The sum of extracted intrinsic and extrinsic base-collector capacitances agrees well with the total base-collector capacitance obtained from the conventional method, verifying the accuracy of the new one.