1N5249

Single Zener Diodes Overview

The Microchip Technology 1N5249 is a single Zener diode designed for voltage regulation applications. It features 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 100 nA at 14 V, a forward voltage of 1.2 V at 200 mA, and a maximum Zener impedance of 23 Ohms. It utilizes a DO-35 axial through-hole package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a metallurgically bonded glass junction structure
• Offers high thermal stability suitable for extreme operating environments
• Features low reverse leakage current for efficient circuit performance

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify the specific suffix letter (e.g., A, B) as it determines the voltage tolerance percentage. Confirm package type availability, as variations exist between axial leaded and surface mount formats. Check manufacturer documentation for updated environmental compliance status and RoHS directives before finalizing procurement specifications.

Single Zener Diodes Selection Notes

Select this component when a 19 V regulation point is required in a standard through-hole design. Ensure the circuit can handle the 500 mW power dissipation limit under worst-case conditions. Consider the ±5% tolerance if tighter voltage accuracy is not critical for the application.

Single Zener Diodes Part Context

This part belongs to the widely recognized 1N52xx series of Zener diodes, which are industry-standard components for general-purpose voltage regulation. The 1N5249 specifically targets the 19 V segment of this lineup, offering a reliable solution for legacy and modern designs requiring robust, low-power voltage control.

Single Zener Diodes Replacement Considerations

Direct substitutes include the onsemi 1N5249B and Microchip 1N5249A. Verify that replacement parts match the original's voltage tolerance, power rating, and package dimensions to ensure compatibility without redesigning the PCB footprint.