An electrical device like this requires a reverse leakage current of 100nA @ 15V.During reverse leakage, the maximum current reaches 100nA.For operation, diode reaches 1.5V @ 200mA at the maximum voltage - Forward (Vf).
BZX55A20-TAP Features
reverse leakage current of 100nA @ 15V 100nA @ 15V is the maximum voltage (Tol) Reverse leakage current reaches 100nA
BZX55A20-TAP Applications
There are a lot of Vishay Semiconductor Diodes Division BZX55A20-TAP applications of zener single diodes.