1N5249BTR

Single Zener Diodes Overview

The onsemi 1N5249BTR is a single-channel general-purpose Zener diode with a nominal voltage of 19 V and a maximum power dissipation of 500 mW. It features a 5% tolerance, operates within a temperature range of -65°C to +200°C, and utilizes an axial lead DO-35 package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation in the 18.05 V to 19.95 V range under specified test conditions
• Utilizes a hermetically sealed glass axial-lead package for reliable performance
• Capable of operating at junction temperatures up to 200°C

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'BTR' corresponds to the tape and reel shipping configuration as documented in the official datasheet. Confirm the specific device code marking matches the 1N5249B designation before procurement to ensure correct part identification.

Single Zener Diodes Selection Notes

Select this component when a 19 V nominal Zener voltage with 5% tolerance is required. Ensure the application can accommodate the 500 mW power dissipation limit and the thermal derating requirements above 50°C specified in the absolute maximum ratings.

Single Zener Diodes Part Context

This component belongs to the 1N5221B through 1N5252B series of 0.5 W Zener Voltage Regulators. The series provides a wide selection of voltages from 2.4 V to 200 V in standard 5% or 10% tolerances using the same glass axial-lead DO-35 package format.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering the 1N5249B specification. Verify that any substitute maintains the 19 V nominal voltage, 500 mW power rating, and DO-35 package dimensions.