1N5253B

Single Zener Diodes Overview

The Microchip Technology 1N5253B is a 0.5 W glass axial-lead Zener diode in the DO-35 package. It provides a nominal Zener voltage of 25 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 100 µA at 20 V. Electrical characteristics include a test current of 5.0 mA, a maximum Zener impedance of 35 Ω at 0.25 mA, and a voltage temperature coefficient of +0.089 %/°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass axial-lead construction for reliable operation
• Standard ±5% voltage tolerance for precise regulation requirements
• Inherently radiation hard design suitable for harsh environments
• Minimal capacitance characteristics for high-frequency applications

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify the specific suffix 'B' confirms the required ±5% tolerance level against project specifications. Confirm that the standard DO-35 glass axial-lead package aligns with the printed circuit board layout constraints. Ensure the operating environment remains within the specified -65°C to +175°C thermal limits to maintain performance integrity.

Single Zener Diodes Selection Notes

Select this component when a 25 V breakdown voltage with tight ±5% tolerance is necessary. The DO-35 package offers flexibility for through-hole mounting configurations. Consider the positive temperature coefficient for thermal stability needs. Evaluate the 0.5 W power dissipation capability against the expected load currents in the target application circuit.

Single Zener Diodes Part Context

This part belongs to the widely used 1N5221 through 1N5281B series of 0.5 W Zener voltage regulators. The series covers a broad selection from 2.4 V to 200 V in JEDEC registered formats. The B suffix specifically denotes the tighter ±5% manufacturing tolerance compared to the standard A suffix options available in the same family.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5253A for 10% tolerance or 1N5253C/D for tighter tolerances. Surface mount equivalents are available as MLL5253B in the DO-213AA MELF package. Verify pinout compatibility and thermal derating curves when substituting across different package styles.

Single Zener Diodes FAQ

What is the voltage temperature coefficient for the 1N5253B?

The voltage temperature coefficient is +0.089 %/°C.

How is the polarity indicated on the 1N5253B package?

Polarity is indicated by a band on the glass body; the banded end represents the cathode.