Taiwan Semi, 5.1V Zener Diode 6% 500 mW SMT 2-Pin Quadro MiniMelf. Diode Configuration: Single. Mounting Type: Surface Mount. Zener Type: Voltage Regulator. Zener Voltage Tolerance: 0.06. Test Current: 5mA. Maximum Zener Impedance: 35Ω. Maximum Reverse Leakage Current: 100nA. Length: 3.7mm. Dimensions: 3.7 x 1.6 x 1.8mm. Height: 1.8mm. MPN: BZT55C5V1 L1, Taiwan Semiconductor