Taiwan Semi, 5.1V Zener Diode 6% 500 mW Through Hole 2-Pin DO-35. Diode Configuration: Single. Zener Type: Voltage Regulator. Zener Voltage Tolerance: 0.06. Test Current: 5mA. Maximum Zener Impedance: 35Ω. Maximum Reverse Leakage Current: 100nA. Length: 3.7mm. Diameter: 2.1mm. Dimensions: 2.1 (Dia.) x 3.7mm. MPN: BZX55C5V1 R0, Taiwan Semiconductor