1N4733A Zener Diode 5.1V 1W DO-41

1N4733A 5.1V 1W Zener Diode – 5% Tolerance DO-41 Silicon Planar Diode

The 1N4733A is a 5.1 V Zener diode rated for 1 W stabilization in a DO‑41 axial package. It delivers precise voltage regulation in clipping, reference, and voltage protection applications. With a maximum regulator current of 178 mA and low reverse leakage current of just 10 µA at 1 V, this diode is reliable under reverse-bias conditions.

This silicon planar Zener diode features ±5% voltage tolerance and a maximum Zener impedance of around 7 Ω at test current. The hermetically sealed glass DO‑41 case ensures durability, stable operation from −55 °C to +175 ° C, and through-hole installation compatibility.

Ideal for industrial and automotive systems, the 1N4733A supports applications in power supplies, telecom, and automation. Its stiff regulation and rugged construction make it well-suited for both prototyping and large-volume production.

Key Specs Zener Voltage: 5.1 V ±5% Power Rating: 1 W Regulator Current: 178 mA max Reverse Leakage: 10 µA @ 1 V Impedance: ~7 Ω max Package: DO‑41 Glass Axial Operating Temp Range: −55 °C to +175 °C Applications: Voltage Regulation, Signal Clipping, Reference Source, Transient Protection Brand: ON Semiconductor (or equivalent manufacturers) Compliance: RoHS & Lead‑Free