1N4733ATR

Single Zener Diodes Overview

The onsemi 1N4733ATR is a single silicon planar Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 5.1 V with a tolerance of ±5%. The device operates in the through-hole DO-41 package and dissipates up to 1 W of power. Key electrical characteristics include a maximum reverse leakage current of 10 µA, a Zener impedance of 7 Ω at a test current of 49 mA, and a forward voltage of 1.2 V. It supports an operating temperature range from -65 °C to +200 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a single silicon planar structure.
• Features low reverse leakage current for efficient standby operation.
• Utilizes a robust DO-41 axial leaded package for reliable through-hole mounting.

Single Zener Diodes Applications

• General-purpose voltage reference circuits
• Overvoltage protection stages
• Power supply output regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix 'ATR' against the manufacturer's official documentation to confirm reel packaging specifications and tape-and-reel dimensions. Ensure the selected variant matches the required RoHS compliance status and lead-free plating requirements for your assembly process. Cross-reference the part number with the latest datasheet revision to confirm any updates to mechanical drawings or testing standards.

Single Zener Diodes Selection Notes

Select this component when a standard 5.1 V reference is required in a through-hole configuration. Compare the 7 Ω dynamic impedance against circuit sensitivity requirements. Verify that the 1 W power dissipation rating accommodates the expected thermal environment without exceeding the maximum junction temperature limits defined in the absolute maximum ratings.

Single Zener Diodes Part Context

This component belongs to the industry-standard 1N47xx series of power Zener diodes. The 'A' suffix typically denotes a tighter ±5% voltage tolerance compared to the base 1N4733 model. The 'TR' suffix indicates the unit is supplied in a tape-and-reel format suitable for automated surface mount or through-hole insertion machinery.

Single Zener Diodes Replacement Considerations

Compatible substitutes include Vishay 1N4733A-TR and Microchip 1N4733AUR/TR. Verify pinout compatibility and ensure the alternative package maintains the same thermal resistance characteristics for direct board replacement.