Zener Diodes

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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.