1N4928

Overview

The Microchip Technology 1N4928 is a single Zener diode designed for precision voltage reference applications. It features a nominal Zener voltage of 19.2 V with a tight tolerance of ±5%. The device has a power dissipation rating of 500 mW and is housed in the DO-204AH (DO-35) axial through-hole package. Key electrical characteristics include a maximum reverse leakage current of 15 µA. This component is specifically engineered as a temperature-compensated low noise Zener reference, ensuring stable performance across varying thermal conditions.

Feature Summary

• Temperature-compensated design for stable voltage reference
• Low noise operation suitable for precision circuits
• Axial through-hole mounting configuration

Applications

• Precision voltage reference sources
• Temperature-stable regulator circuits
• Low-noise analog signal conditioning

Procurement Notes

Verify the specific suffix (e.g., /TR) to confirm tape-and-reel packaging if required. Confirm RoHS compliance status, as some variants may be non-compliant. Ensure the manufacturer is Microchip Technology or an authorized distributor providing valid traceability documentation. Check for lead-free plating requirements against project specifications.

Selection Notes

Select this component when a stable 19.2 V reference with low noise is required. The temperature compensation feature distinguishes it from standard Zener diodes, making it suitable for environments with thermal fluctuations. Verify that the 500 mW power rating meets the circuit's dissipation needs. Consider the DO-35 package size for PCB layout constraints.

Part Context

This part belongs to the family of single Zener diodes manufactured by Microchip Technology. It serves as a specialized reference component within their discrete semiconductor portfolio. The 1N4928 designation identifies a specific voltage and compensation profile, differentiating it from other Zener voltages in the same series.

Replacement Considerations

Cross-reference with Digitron Semiconductors 1N4928 for equivalent specifications. Verify pinout compatibility and thermal characteristics before substitution. Ensure the replacement part maintains the 19.2 V nominal voltage and ±5% tolerance.