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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

12.0 Volt 50 Watt Zener Diode - NTE5254A

SKU: NTE5254A

$21.48

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$21.48

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13.0 Volt 1/2 Watt Zener Diode - NTE5022A

SKU: NTE5022A

$0.86

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$0.86

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13.0 Volt 1 Watt Zener Diode - NTE143A

SKU: NTE143A

$0.72

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$0.72

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13.0 Volt 5 Watt Zener Diode - NTE5128A

SKU: NTE5128A

$1.30

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$1.30

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14.0 Volt 1/2 Watt Zener Diode - NTE5023A

SKU: NTE5023A

$0.86

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$0.86

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14.0 Volt 1 Watt Zener Diode - NTE144A - 2 Pack

SKU: NTE144A

$2.02

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$2.02

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14.0 Volt 5 Watt Zener Diode - NTE5129A

SKU: NTE5129A

$1.30

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$1.30

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14.0 Volt 50 Watt Zener Diode - NTE5256A

SKU: NTE5256A

$21.48

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$21.48

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15.0 Volt 1/2 Watt Zener Diode - NTE5024A

SKU: NTE5024A

$0.86

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$0.86

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15.0 Volt 1 Watt Zener Diode - NTE145A

SKU: NTE145A

$0.56

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$0.56

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15.0 Volt 5 Watt Zener Diode - NTE5130A

SKU: NTE5130A

$1.30

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$1.30

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15.0 Volt 10 Watt Zener Diode - NTE5191A

SKU: NTE5191A

$12.88

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$12.88

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15.0 Volt 10 Watt Zener Diode Reverse Polarity - NTE5191AK

SKU: NTE5191AK

$12.88

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$12.88

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15.0 Volt 50 Watt Zener Diode - VET5257A (Replaces NTE5257A)

SKU: NTE5257A

$21.48

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$21.48

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16.0 Volt 5 Watt Zener Diode - NTE5131A

SKU: NTE5131A

$1.30

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$1.30

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16.0 Volt 10 Watt Zener Diode - NTE5192A

SKU: NTE5192A

$12.88

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$12.88

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16.0 Volt 10 Watt Zener Diode Reverse Polarity - NTE5192AK

SKU: NTE5192AK

$12.88

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$12.88

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16.0 Volt 50 Watt Zener Diode - NTE5258A

SKU: NTE5258A

$21.48

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$21.48

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16.0 Volt 50 Watt Zener Diode - VET5258A (Replaces NTE5258A)

SKU: VUPN1871

$26.86

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$26.86

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17.0 Volt 1 Watt Zener Diode - NTE5076A

SKU: NTE5076A

$1.30

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$1.30

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17.0 Volt 50 Watt Zener Diode - NTE5259A

SKU: NTE5259A

$21.48

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$21.48

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18.0 Volt 1/2 Watt Zener Diode - NTE5027A

SKU: NTE5027A

$0.86

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$0.86

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$1.30

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18.0 Volt 5 Watt Zener Diode - NTE5133A

SKU: NTE5133A

$1.30

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$1.30

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18.0 Volt 50 Watt Zener Diode Reverse Polarity - NTE5260AK

SKU: NTE5260AK

$21.48

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$21.48

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19.0 Volt 1 Watt Zener Diode - NTE5078A

SKU: NTE5078A

$1.30

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$1.30

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20.0 Volt 1/2 Watt Zener Diode - NTE5029A

SKU: NTE5029A

$0.46

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$0.46

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20.0 Volt 1 Watt Zener Diode - NTE5079A

SKU: NTE5079A

$1.30

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$1.30

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$1.30

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20.0 Volt 10 Watt Zener Diode - NTE5196A

SKU: NTE5196A

$12.88

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$12.88

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20.0 Volt 50 Watt Zener Diode - NTE5262A

SKU: NTE5262A

$21.48

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$21.48

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22.0 Volt 1/2 Watt Zener Diode - NTE5030A

SKU: NTE5030A

$0.86

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$0.86

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22.0 Volt 1 Watt Zener Diode - NTE5080A

SKU: NTE5080A

$1.30

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$1.30

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22.0 Volt 5 Watt Zener Diode - NTE5136A

SKU: NTE5136A

$1.30

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$1.30

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24.0 Volt 1/2 Watt Zener Diode - NTE5031A

SKU: NTE5031A

$0.86

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$0.86

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24.0 Volt 1 Watt Zener Diode - NTE5081A

SKU: NTE5081A

$1.30

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$1.30

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24.0 Volt 5 Watt Zener Diode - NTE5137A

SKU: NTE5137A

$1.30

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$1.30

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VET5198A 24.0 Volt 10 Watt Zener Diode - (Replaces NTE5198A)

SKU: NTE5198A

$12.88

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$12.88

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24.0 Volt 50 Watt Zener Diode - NTE5264A

SKU: NTE5264A

$21.48

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$21.48

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25.0 Volt 1 Watt Zener Diode - NTE5082A

SKU: NTE5082A

$1.30

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$1.30

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25.0 Volt 10 Watt Zener Diode - NTE5199A

SKU: NTE5199A

$12.88

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$12.88

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25.0 Volt 50 Watt Zener Diode - NTE5265A

SKU: NTE5265A

$27.48

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$27.48

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27.0 Volt 1 Watt Zener Diode - NTE146A

SKU: NTE146A

$0.56

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$0.56

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28.0 Volt 1/2 Watt Zener Diode - NTE5034A

SKU: NTE5034A

$0.46

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$0.46

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30.0 Volt 1/2 Watt Zener Diode - NTE5035A

SKU: NTE5035A

$0.86

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$0.86

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30.0 Volt 5 Watt Zener Diode - NTE5141A

SKU: NTE5141A

$1.30

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$1.30

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30.0 Volt 50 Watt Zener Diode - NTE5268A

SKU: NTE5268A

$21.48

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per

$21.48

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30.0 Volt 50 Watt Zener Diode Reverse Polarity - NTE5268AK

SKU: NTE5268AK

$21.48

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per

$21.48

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