Taiwan Semi, 20V Zener Diode 5% 1.3 W Through Hole 2-Pin DO-41. Diode Configuration: Single. Zener Type: Voltage Regulator. Zener Voltage Tolerance: 0.05. Test Current: 10mA. Maximum Zener Impedance: 24Ω. Maximum Reverse Leakage Current: 500nA. Length: 4.25mm. Diameter: 2.6mm. Dimensions: 2.6 (Dia.) x 4.25mm. MPN: BZX85C20 R0, Taiwan Semiconductor