What is 1N4733A? – 5.1V, 1W, Zener Diode, Rectifier ( PDF )

What is 1N4733A?

This is a type of 5.1V, Zener diode that is commonly used in electronic circuits for voltage regulation and voltage reference.

This Zener diode has a number of features that make it popular in electronic circuits, including its low cost, small size, and high reliability. It is widely available and can be used in a variety of circuits such as voltage regulators, voltage references, and power supplies.

Part Number: 1N4733A

Function: 5.1V, 1W, Zener Diode

Package: DO-41 Glass case

Manufacturer: Fairchild Semiconductor

Image and pinout

1N4733A datasheet



This is a complete series of 1 Watt Zener diode with limits and excellent operating characteristics that reflect the superior capabilities of silicon-oxide passivated junctions. All this in an axial-lead hermetically sealed glass package that offers protection in all common environmental conditions.

DO-41 Glass case, Tolerance = 5%


1. Low cost and widely available
2. Small size makes it suitable for compact circuits
3. High reliability and long lifespan
4. Provides a stable voltage reference or voltage regulation



1. Limited range of breakdown voltages available
2. Can experience thermal runaway if not used properly
3. Not suitable for high-power applications


1. Vz – Zener Voltage : 5.1 V
2. Mounting Style :  Through Hole
3. Package / Case :  DO-41-2
4. Pd – Power Dissipation :  1 W
5. Voltage Tolerance : 5 %
6. Zener Current :  10 uA
7. Zz – Zener Impedance :  7 Ohms
8. Minimum Operating Temperature : – 65 °C
9. Maximum Operating Temperature : + 200 °C

Other data sheets are available within the file:

1N4728A, 1N4729A, 1N4730A, 1N4731A, 1N4732A

1N4733A Datasheet PDF Download

1N4733A pdf

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