1N4922A/TR

Overview

The Microchip Technology 1N4922A/TR is a temperature-compensated Zener diode designed for precision voltage regulation applications. It features a nominal Zener voltage of 19.2 V with a tight tolerance of 5%. The device operates in the DO-213AA (PD) surface-mount package and dissipates up to 500 mW of power. Key electrical characteristics include a maximum reverse leakage current of 15 uA, a Zener impedance of 150 ohms at a test current of 2 mA, and an operating temperature range from -65°C to +175°C.

Feature Summary

• Temperature compensation ensures stable voltage regulation across wide thermal variations
• High reliability construction suitable for demanding industrial environments
• Surface-mount packaging facilitates automated assembly processes

Applications

• Precision voltage reference circuits requiring low drift
• Over-voltage protection systems in harsh environments
• Test and measurement equipment calibration standards

Procurement Notes

Verify the specific suffix and manufacturer documentation to confirm exact electrical tolerances and testing standards. Ensure compatibility with surface-mount assembly profiles and check for any specific handling requirements related to the PD package type before integration into production designs.

Selection Notes

Select this component when precise voltage stability over temperature is critical. Compare leakage current and impedance specifications against circuit requirements. Consider the thermal management capabilities of the PCB layout given the 500 mW power dissipation rating and extended temperature range.

Part Context

This part belongs to Microchip's temperature-compensated Zener diode family, which utilizes specialized doping techniques to minimize voltage drift. These components are engineered for high-stability applications where standard Zener diodes would exhibit unacceptable performance changes due to thermal fluctuations.

Replacement Considerations

Consult official substitution guides for equivalent temperature-compensated Zener diodes with matching voltage and package constraints.