1N5249BTR

Single Zener Diodes Overview

The Fairchild Semiconductor 1N5249BTR is a single silicon Zener diode housed in the DO-35 axial through-hole package. It provides a nominal Zener voltage of 19 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +200°C. Key electrical characteristics include a reverse leakage current of 1 µA at 13.8 V, a Zener impedance of 17 Ohms at 20 mA, and a forward voltage drop of 1.2 V at 200 mA.

Single Zener Diodes Feature Summary

• Utilizes a glass-passed silicon junction for stable voltage regulation
• Features an axial leaded DO-35 package suitable for through-hole mounting
• Designed for high thermal stability with a maximum operating temperature of 200°C

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 manufacturer marking against official Fairchild Semiconductor documentation to confirm authenticity. Ensure the component matches the specified DO-35 package dimensions and lead configuration. Cross-reference the part number suffix with datasheet revisions to validate specific manufacturing lot details before integration into production.

Single Zener Diodes Selection Notes

Select this component when a 19 V regulation point is required in a standard axial form factor. Consider the 500 mW power rating and ±5% voltage tolerance for circuit design margins. Evaluate the 17 Ohm impedance value for dynamic load requirements and ensure the operating environment stays within the specified -65°C to +200°C thermal limits.

Single Zener Diodes Part Context

This component belongs to the 1N52xx series of low-power Zener diodes manufactured by Fairchild Semiconductor. The series offers various voltage options in a consistent DO-35 glass-encapsulated package. These devices are widely used in general-purpose electronics for biasing and regulation tasks where moderate precision and reliability are necessary.