(Pack of 5) 3.3V 1/2W 1N4728A Zener Diode

(Pack of 5) 3.3V 1/2W 1N4728A Zener Diode

This pack includes five 3.3V Zener diodes rated at 0.5W (½ watt). These diodes are designed to provide a precise 3.3V reference voltage when reverse-biased in the Zener breakdown region. They are widely used in low-voltage regulation, logic-level protection, and signal conditioning circuits. The diodes typically come in a DO-35 axial package, making them easy to use in breadboards, prototyping boards, and compact PCBs.

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Features

• Zener Voltage (Vz): 3.3V nominal
• Power Rating: 0.5W (½ watt)
• Package: DO-35 axial
• Typical Test Current (Iz): 5–20mA
• Low dynamic impedance for stable voltage regulation
• Low leakage current improves efficiency
• Durable silicon diode design
• Pack of 5 for multiple builds or spares

Applications

• Low-voltage regulation for small electronic circuits
• Reference voltage for ADCs, DACs, and op-amps
• Logic-level protection (ideal for 3.3V microcontroller systems)
• Signal clamping and limiting
• Low-voltage over-voltage protection
• DIY electronics, hobby projects, and prototyping

Zener Diode Datasheet (2)