1N5254B

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5254B is a silicon planar Zener diode housed in the DO-35 glass axial leaded package. It provides a nominal regulation voltage of 27V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 0.5W at ambient temperatures up to 75°C, decreasing linearly to zero at higher temperatures. It operates within a junction temperature range of -65°C to +200°C and features a knee impedance of 600 Ω maximum.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for stable voltage regulation characteristics
• Encapsulated in hermetically sealed glass axial leads for environmental protection
• Designed for high reliability applications requiring consistent performance across wide temperature ranges

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source when sourcing this component, as the 1N5254B designation is utilized by multiple semiconductor producers including Diodes Inc. and Rectron. Confirm that the received unit matches the original Fairchild specifications regarding package dimensions and electrical tolerances if strict adherence to the original datasheet is required for your design.

Single Zener Diodes Selection Notes

Select this component for designs requiring a standard 27V regulation point in through-hole assemblies. Ensure the circuit allows for sufficient heat sinking or airflow to maintain the junction temperature below the 200°C limit during continuous operation at full power dissipation ratings.

Single Zener Diodes Part Context

This part belongs to the widely recognized 1N52xx series of low-power Zener diodes. These components are industry-standard replacements for various legacy voltage regulator designs. The DO-35 package remains a common choice for general-purpose discrete electronics where space constraints are minimal compared to surface-mount alternatives.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5254B-B from Diodes Inc. and generic equivalents from manufacturers like Rectron. Verify that replacement parts meet the same ±5% voltage tolerance and 0.5W power rating to ensure functional compatibility.