160 V Zener with 500 mW rating
The 1N6029B is a 160 V Zener diode from Microchip Technology, rated for 500 mW continuous power dissipation in a DO-35 axial leaded package. The ±5% tolerance on the nominal voltage means the actual Zener voltage falls between 152 V and 168 V at the specified test current — tight enough for most reference and clamping applications in industrial control boards. Maximum impedance (Zzt) is 1.4 kOhms at the Zener test current, and reverse leakage is specified at 100 nA maximum with 122 V applied across the junction. The 1.1 V maximum forward voltage at 200 mA confirms the diode conducts predictably in the forward direction when used as a low-current rectifier or protection clamp.
The DO-35 glass body with axial leads suits through-hole assembly on single-sided or double-sided boards; the 0.020-inch diameter leads fit standard 0.040-inch plated through-holes.