1N4738A

This 8.2 V zener diode is a single two-terminal voltage regulator diode in an axial through-hole DO-204AL package. The exact 1N4738A industry-standard version is rated for 1 W power dissipation with 5% zener voltage tolerance at a 31 mA test current. Representative exact-PN data lists 4.5 Ω zener impedance, 700 Ω knee impedance, 10 µA reverse leakage at 6 V, and 1.2 V forward voltage at 200 mA. Junction and storage temperature limits are -65 °C to 200 °C.