1N4926

Overview

The Microchip Technology 1N4926/TR is a temperature-compensated Zener reference diode housed in the DO-35 (DO-204AH) through-hole package. It features a nominal Zener voltage of 19.2 V with a tight tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and exhibits a maximum reverse leakage current of 15 µA. Designed for precision applications, it provides stable voltage regulation across varying thermal conditions.

Feature Summary

• Temperature compensated design for stable voltage reference performance
• Precision voltage tolerance ensuring accurate regulation
• Through-hole construction for reliable circuit board mounting

Applications

• Precision voltage reference circuits
• Temperature compensated regulator designs
• Calibration equipment requiring stable DC references

Procurement Notes

Verify the specific suffix TR to confirm tape-and-reel packaging configuration if required for automated assembly processes. Ensure the DO-35 package dimensions align with the target PCB footprint. Confirm that the 19.2 V nominal voltage meets the system's reference requirements before finalizing procurement orders.

Selection Notes

Select this component when a stable, temperature-insensitive voltage reference is needed in a standard axial leaded package. The 500 mW power rating suits low-current reference applications. Verify that the ±5% tolerance is sufficient for the specific circuit accuracy requirements compared to tighter tolerance alternatives.

Part Context

This part belongs to Microchip's single Zener diode lineup, specifically engineered as a temperature-compensated reference. Unlike standard Zener diodes, these are optimized to minimize voltage drift over temperature ranges, making them suitable for high-precision analog signal processing and measurement instrumentation contexts.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4926 equivalents such as those from Diodes Inc or Microsemi. Ensure replacement parts maintain the 19.2 V nominal voltage, DO-35 package, and temperature compensation characteristics to preserve circuit functionality.