1N5252A

Single Zener Diodes Overview

The Microchip Technology 1N5252A is a single silicon Zener diode housed in a hermetically sealed glass DO-35 (DO-204AH) axial-lead package. It provides a nominal Zener voltage of 24 V with a standard tolerance of ±10%. The device dissipates up to 0.5 watts at 25°C and operates within a temperature range of -65°C to +175°C. Key electrical parameters include a maximum reverse current of 100 µA, a Zener impedance of 33 Ohms at a test current of 5.2 mA, and a positive voltage temperature coefficient of +0.088 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for environmental stability
• Regulates voltage across a broad operating current and temperature range
• Inherently radiation hard per MicroNote 050
• Minimal capacitance characteristics

Single Zener Diodes Applications

• Voltage regulation circuits
• Reference voltage sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific suffix 'A' confirms the ±10% tolerance requirement. Confirm that the DO-35 glass package meets thermal and mechanical constraints. Ensure compatibility with RoHS compliance if required by the final assembly specifications.

Single Zener Diodes Selection Notes

Select this component when a stable 24 V reference is needed in an axial-lead form factor. Consider the positive temperature coefficient for thermal compensation requirements. Evaluate the 0.5 W power dissipation limit against expected circuit loads.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 watt Zener Voltage Regulators. The series offers a wide selection from 2.4 to 200 volts. Variations exist with different tolerances identified by suffix letters such as B for ±5%, C for ±2%, and D for ±1%.

Single Zener Diodes Replacement Considerations

Equivalent parts include 1N5252B for tighter ±5% tolerance or 1N5252C/D for higher precision. Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF package.

Single Zener Diodes FAQ

What is the voltage temperature coefficient for the 1N5252A?

The voltage temperature coefficient is +0.088 %/°C.

How is polarity indicated on the device?

Polarity is indicated by a band on the cathode end. The diode must be operated with the banded end positive with respect to the opposite end for Zener regulation.