1N4931/TR

Overview

The 1N4931/TR is a temperature compensated Zener diode manufactured by Microchip Technology. It features a nominal Zener voltage of 19.2 V with a tolerance of ±5%. The device has a power dissipation rating of 500 mW and operates at a test current of 7.5 mA. It exhibits a low voltage temperature coefficient of 0.002 %/°C. The component utilizes a DO-35 axial through-hole package and is supplied in tape and reel packaging.

Feature Summary

• Temperature compensated design for stable voltage reference
• Low noise operation suitable for precision applications
• Metallurgically bonded construction with double plug design

Applications

• Precision voltage reference circuits
• Temperature compensated regulation systems
• Low noise signal conditioning

Procurement Notes

Verify the specific suffix /TR confirms tape and reel packaging when ordering. Confirm RoHS3 compliance status matches project requirements. Ensure the DO-35 package dimensions align with PCB layout constraints. Validate that the 19.2V nominal voltage meets circuit design specifications before procurement.

Selection Notes

Select this component when a stable, low-noise voltage reference is required over varying temperatures. The 19.2V output and 500mW dissipation define its operational limits. Consider the axial leaded package for through-hole assembly processes. Verify compatibility with existing thermal management strategies given the power rating.

Part Context

This part belongs to Microchip's single Zener diode line, specifically designed for temperature compensation. It differs from standard Zener diodes by incorporating specific construction techniques to minimize voltage drift with temperature changes. The /TR suffix indicates bulk reel packaging rather than individual units.

Replacement Considerations

Check datasheets for equivalent temperature compensated Zener diodes with matching 19.2V nominal voltage and ±5% tolerance. Verify power dissipation ratings of at least 500 mW. Ensure package compatibility with DO-35 or DO-7-2 form factors. Confirm similar temperature coefficients for critical stability requirements.