1N4922

Overview

The Microchip Technology 1N4922 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 SMD/SMT configuration within a DO-213AA-2 (PD) package, supporting a maximum power dissipation of 500 mW. Electrical characteristics include a maximum reverse leakage current of 15 µA and a Zener impedance of 150 ohms at a test current of 2 mA. It is rated for an extended operating temperature range from -65°C to +175°C.

Feature Summary

• Temperature compensation ensures stable voltage regulation across wide thermal variations
• High reliability construction supports operation in extreme environments up to 175°C
• Precision voltage tolerance maintains accuracy in critical reference circuits

Applications

• Precision voltage reference sources requiring thermal stability
• Overvoltage protection circuits in harsh industrial environments
• Temperature-compensated regulator designs

Procurement Notes

Verify the specific suffix and packaging configuration against the manufacturer's official datasheet to ensure compatibility with your assembly process. Confirm that the component meets all required environmental certifications and RoHS compliance standards before finalizing procurement. Cross-reference the ordering part number with the latest Microchip Technology documentation to avoid discrepancies in specifications or package type.

Selection Notes

Select this component when high-temperature stability is critical for voltage regulation performance. The 19.2 V rating suits specific reference needs, while the 500 mW dissipation capability allows for moderate load handling. Ensure the DO-213AA-2 package fits the available PCB real estate and that the 150 ohm impedance aligns with the circuit's noise and stability requirements.

Part Context

The 1N4922 belongs to Microchip Technology's discrete diode portfolio, specifically categorized under temperature-compensated Zener diodes. This series is engineered for applications demanding consistent electrical performance despite significant ambient temperature fluctuations. It complements the company's broader range of signal and power diodes used in industrial and automotive sectors.

Replacement Considerations

Consult the official Microchip Technology cross-reference guide for verified equivalent parts. Ensure any substitute matches the 19.2 V Zener voltage, 5% tolerance, and DO-213AA-2 package dimensions.