Manufacturer: Fairchild Semiconductor  •  RoHS/pb-free: RoHS   Pb-free  •  Voltage - Zener (Nom) (Vz): 5.1V  •  Voltage - Forward (Vf) (Max) @ If: 1.2V @ 200mA  •  Current - Reverse Leakage @ Vr: 5µA @ 2V  •  Tolerance: ±5%  •  Power - Max: 500mW  •  Impedance (Max) (Zzt): 17 Ohm  •  Mounting Type: Through Hole, Axial  •  Package / Case: DO-35, DO-204AH, Axial  •  Operating Temperature: -65°C ~ 200°C  •  Other PartNo: 1N5231BFSCT