Zener Diode – 3.3V 1W


Availability: In Stock


SKU: ELC-013 Manufacturer: MCC Mfg Part Number: 1N4728A Category: Tags: ,


These 3.3V Zener diodes are well suited for protection on 3.3V circuits like those found on the Raspberry Pi. A Zener diode works like a conventional diode up until the point you hit the breakdown voltage (the point at which the diode can no longer “hold back” the current trying to flow backwards in your circuit). A “normal” diode will allow current flow to reverse direction when the breakdown voltage is exceeded while a Zener diode allows everything over the breakdown voltage to trickle through while holding back the rated voltage. Zener diodes make great low current voltage stabilizers, reference voltages, and are one method of protecting I/O pins from over-voltage.

These specific diodes are rated at 1W and 3.3V.



  • Power Dissipation: 1 Watt
  • Forward Voltage: 0.68V
  • Zener Voltage: 3.3V
  • Voltage Tolerance: 5%




  Difficulty Level

Soldering Skill: N/A
Prototyping Skill: Beginner
Programming Skill: N/A

  Product Certifications

  Product Attributes

Weight: 1 g

  Warranty Policy

This product has a 30 Day Warranty from the date of delivery. The item must not be modified, abused, incorrectly hooked up, or used for purposes outside the original scope of design.

  Return Policy

This product is returnable Within 14 Days of delivery for a store credit. Item must be unopened, unused, and in re-saleable condition.

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