22 V Zener — 500 mW in a DO-35 axial lead
The Microchip Technology 1N6008A is a 22 V Zener diode rated for 500 mW continuous power dissipation in the DO-35 glass axial-lead package. The ±10% tolerance on the nominal Zener voltage covers the standard commercial grade — adequate for voltage clamping, shunt regulation, and reference biasing where tighter bins are not required.
Parametric limits that govern the circuit design
Maximum Zener impedance (Zzt) is 70 Ohms at the test current — this sets the line-regulation slope: a 1 mA change in operating current shifts the Zener voltage by up to 70 mV. Reverse leakage is specified at 100 nA maximum at 14 V reverse bias, which is 64% of the nominal Zener voltage; this low leakage floor suits the diode for high-impedance bias circuits where the shunt current must be predictable.