Your cart
Your cart is empty

Zener Diodes

Looking for high-performance zener diodes for your electronics projects? Vetco Electronics offers one of the most diverse and dependable selections of zener diodes in the market, whether you’re prototyping a circuit, replacing components, or designing voltage regulation systems for commercial applications.

What is a Zener Diode?

A zener diode is a special type of diode designed to allow current to flow not only from its anode to its cathode (like a regular diode) but also in the reverse direction when the voltage exceeds a specific threshold known as the Zener breakdown voltage. This makes zener diodes ideal for voltage regulation, surge protection, and reference voltage generation in low and high-voltage circuits.

At Vetco, we carry a wide selection of voltage ratings, including 3.3V zener diode, 5V zener diode, 5.1V, 12V, 15V, 18V, 20V, 24V, and even high-voltage options like 100V zener diodes

Why Use Zener Diodes?

Zener diodes are commonly used for:

  • Maintaining stable voltage in power supply circuits
  • Over-voltage protection in sensitive electronics
  • Signal clipping in audio and RF circuits
  • Voltage references for analog-to-digital converters (ADCs)

For compact or high-efficiency builds, we also offer high-power zener diodes and double zener diodes for specialized configurations.

Shop by Voltage, Model, and Package

Vetco’s inventory includes axial and surface-mount zener diodes across multiple power ratings and breakdown voltages. Whether you need a 5.6V zener diode for a logic circuit or a 120V zener diode for a high-voltage application, our catalog is easy to browse and supported by our expert customer service.

Popular Models We Carry:

  • 1N4733A Zener Diode – 5.1V
  • 1N4742A Zener Diode – 12V
  • 1N4735 Zener Diode – 6.2V
  • 3V, 10V, 15V, and 24V zener diode options
  • Low-voltage: 1V, 3.3V, 5V zener diodes
  • High-voltage: 100V and 120V zener diodes

Why Buy Zener Diodes from Vetco?

  • Over 25 Years of Experience in electronics supply and support
  • Massive inventory of components including diodes, capacitors, resistors, ICs, and transistors
  • Knowledgeable support team ready to help you select the right zener diode or provide datasheets
  • Fast local and nationwide shipping from our Seattle warehouse
  • Trusted by hobbyists, technicians, engineers, and educational institutions

Vetco Electronics is more than just a store - we’re your partner in building and repairing electronics. Whether you need a single zener diode 5V or a bulk kit for your lab, Vetco offers quality, quantity, and confidence with every order.

Need help choosing between a zener diode 3.3V, 5.1V, or 10V? Contact us anytime or visit our Bellevue storefront to speak with an expert!

Shop zener diodes with Vetco Electronics today - your trusted source for reliable components, expert advice, and unbeatable selection.

 

136 Results

136 Results

2.4 Volt 1/2 Watt Zener Diode - NTE5000A

SKU: NTE5000A

$1.00

Unit price
per

$1.00

Unit price
per

2.5 Volt 1 Watt Zener Diode - NTE5062A

SKU: NTE5062A

$1.96

Unit price
per

$1.96

Unit price
per

3.0 Volt 1 Watt Zener Diode - NTE5065A

SKU: NTE5065A

$2.22

Unit price
per

$2.22

Unit price
per

3.3 Volt 1 Watt Zener Diode - NTE5066A

SKU: NTE5066A

$1.99

Unit price
per

$1.99

Unit price
per

3.6 Volt 1/2 Watt Zener Diode - NTE5006A

SKU: NTE5006A

$1.00

Unit price
per

$1.00

Unit price
per

3.6 Volt 1 Watt Zener Diode - VET134A (Replaces NTE134A)

SKU: NTE134A

$0.72

Unit price
per

$0.72

Unit price
per

3.9 Volt 1/2 Watt Zener Diode - NTE5007A

SKU: NTE5007A

$1.00

Unit price
per

$1.00

Unit price
per

3.9 Volt 1 Watt Zener Diode - NTE5067A 2-Pack

SKU: NTE5067A

$1.30

Unit price
per

$1.30

Unit price
per

3.9 Volt 50 Watt Zener Diode - NTE5240A

SKU: NTE5240A

$39.98

Unit price
per

$39.98

Unit price
per

4.3 Volt 1 Watt Zener Diode - NTE5068A

SKU: NTE5068A

$1.30

Unit price
per

$1.30

Unit price
per

4.3 Volt 5 Watt Zener Diode - NTE5114A

SKU: NTE5114A

$2.22

Unit price
per

$2.22

Unit price
per

4.3 Volt 50 Watt Zener Diode - NTE5241A

SKU: NTE5241A

$39.98

Unit price
per

$39.98

Unit price
per

4.7 Volt 1 Watt Zener Diode - NTE5069A

SKU: NTE5069A

$1.30

Unit price
per

$1.30

Unit price
per

4.7 Volt 5 Watt Zener Diode - NTE5115A

SKU: NTE5115A

$1.30

Unit price
per

$1.30

Unit price
per

5.1 Volt 1/2 Watt Zener Diode - NTE5010A

SKU: NTE5010A

$0.46

Unit price
per

$0.46

Unit price
per

5.1 Volt 1 Watt Zener Diode - VET135A (Replaces NTE135A)

SKU: NTE135A

$0.72

Unit price
per

$0.72

Unit price
per

5.1 Volt 10 Watt Zener Diode Reverse Polarity - NTE5177AK

SKU: NTE5177AK

$35.00

Unit price
per

$35.00

Unit price
per

5.6 Volt 5 Watt Zener Diode - NTE5117A

SKU: NTE5117A

$1.30

Unit price
per

$1.30

Unit price
per

5.6 Volt 50 Watt Zener Diode - VET5244A (Replaces NTE5244A)

SKU: VET5244A

$39.98

Unit price
per

$39.98

Unit price
per

6.2 Volt 1/2 Watt Zener Diode - NTE5013A

SKU: NTE5013A

$0.46

Unit price
per

$0.46

Unit price
per

6.8 Volt 1/2 Watt Zener Diode - NTE5014A

SKU: NTE5014A

$0.96

Unit price
per

$0.96

Unit price
per

6.8 Volt 50 Watt Zener Diode - NTE5247A

SKU: NTE5247A

$21.48

Unit price
per

$21.48

Unit price
per

$21.48

Unit price
per

7.5 Volt 1 Watt Zener Diode - NTE138A

SKU: NTE138A

$0.72

Unit price
per

$0.72

Unit price
per

7.5 Volt 5 Watt Zener Diode - NTE5121A

SKU: NTE5121A

$1.30

Unit price
per

$1.30

Unit price
per

7.5 Volt 10 Watt Zener Diode - NTE5182A

SKU: NTE5182A

$12.88

Unit price
per

$12.88

Unit price
per

7.5 Volt 50 Watt Zener Diode - NTE5248A

SKU: NTE5248A

$21.48

Unit price
per

$21.48

Unit price
per

8.2 Volt 1 Watt Zener Diode - NTE5072A

SKU: NTE5072A

$1.30

Unit price
per

$1.30

Unit price
per

8.2 Volt 10 Watt Zener Diode - NTE5183A

SKU: NTE5183A

$12.88

Unit price
per

$12.88

Unit price
per

8.2 Volt 50 Watt Zener Diode - NTE5249A

SKU: NTE5249A

$26.86

Unit price
per

$26.86

Unit price
per

8.7 Volt 10 Watt Zener Diode - NTE5184A

SKU: NTE5184A

$12.88

Unit price
per

$12.88

Unit price
per

8.7 Volt 10 Watt Zener Diode Reverse Polarity - NTE5184AK

SKU: NTE5184AK

$12.88

Unit price
per

$12.88

Unit price
per

9.1 Volt 1/2 Watt Zener Diode - NTE5018A

SKU: NTE5018A

$0.86

Unit price
per

$0.86

Unit price
per

9.1 Volt 1 Watt Zener Diode - NTE139A

SKU: NTE139A

$0.72

Unit price
per

$0.72

Unit price
per

VET5251A 9.1 Volt 50 Watt Zener Diode - (Replaces NTE5251A)

SKU: VET5251A

$21.48

Unit price
per

$21.48

Unit price
per

10.0 Volt 1/2 Watt 1% Zener Diode - NTE5019T1

SKU: NTE5019T1

$1.60

Unit price
per

$1.60

Unit price
per

$1.30

Unit price
per

10.0 Volt 10 Watt Zener Diode - VET5186A (Replaces NTE5186A)

SKU: NTE5186A

$12.88

Unit price
per

$12.88

Unit price
per

10.0 Volt 10 Watt Zener Diode Reverse Polarity - NTE5186AK

SKU: NTE5186AK

$12.88

Unit price
per

$12.88

Unit price
per

10.0 Volt 50 Watt Zener Diode - NTE5252A

SKU: NTE5252A

$21.48

Unit price
per

$21.48

Unit price
per

11.0 Volt 1/2 Watt Zener Diode - NTE5020A

SKU: NTE5020A

$0.79

Unit price
per

$0.79

Unit price
per

11.0 Volt 1 Watt Zener Diode - NTE5074A

SKU: NTE5074A

$1.30

Unit price
per

$1.30

Unit price
per

11.0 Volt 5 Watt Zener Diode - NTE5126A

SKU: NTE5126A

$1.30

Unit price
per

$1.30

Unit price
per

12.0 Volt 1/2 Watt Zener Diode - NTE5021A

SKU: NTE5021A

$0.46

Unit price
per

$0.46

Unit price
per

12.0 Volt 1 Watt Zener Diode - NTE142A

SKU: NTE142A

$0.72

Unit price
per

$0.72

Unit price
per

12.0 Volt 5 Watt Zener Diode - NTE5127A

SKU: NTE5127A

$1.30

Unit price
per

$1.30

Unit price
per

12.0 Volt 10 Watt Zener Diode - VET5188A (Replaces NTE5188A)

SKU: NTE5188A

$12.88

Unit price
per

$12.88

Unit price
per

12.0 Volt 10 Watt Zener Diode Reverse Polarity - NTE5188AK

SKU: NTE5188AK

$12.88

Unit price
per

$12.88

Unit price
per