1N4622

Single Zener Diodes Overview

The Microchip Technology 1N4622 is a silicon unidirectional Zener voltage regulator diode designed for low-noise applications. It features a nominal reference voltage of 3.9 V with a maximum reverse leakage current of 5 µA. The device is available in various configurations, including bare die and axial-lead packages such as DO-35 (DO-204AH). Power dissipation ratings vary by package, typically ranging from 0.48 W to 0.5 W. Some variants offer tight voltage tolerances of 1%, while standard versions provide 5% tolerance. Operating temperatures extend up to 175 °C.

Single Zener Diodes Feature Summary

• Low noise performance suitable for sensitive signal conditioning
• Hermetically sealed glass case construction in axial-lead variants
• Available in multiple tolerance grades including 1% and 5%
• High thermal stability with extended operating temperature range

Single Zener Diodes Applications

• Precision voltage reference circuits
• Low-noise power supply regulation
• Overvoltage protection in analog systems
• Clamping applications in signal processing

Single Zener Diodes Procurement Notes

Verify the specific suffix codes on the part number to confirm package type, tolerance, and RoHS compliance status. Manufacturers may use different suffixes to denote variations in manufacturing origin or material composition. Ensure the selected variant meets the required environmental qualifications for the intended application. Cross-reference datasheets from authorized distributors to confirm current production status and availability constraints.

Single Zener Diodes Selection Notes

Select the 1N4622 based on the required voltage tolerance and physical form factor. Bare die options are suitable for custom packaging solutions, while DO-35 axial leads offer through-hole mounting convenience. Consider the power dissipation limits when designing heat management strategies. Verify that the leakage current specifications align with the precision requirements of the target circuit design.

Single Zener Diodes Part Context

This component belongs to the broader family of 1N46xx series Zener diodes, which are widely used for voltage regulation and reference applications. The 1N4622 specifically targets the 3.9 V segment of this lineup. Microchip Technology and other manufacturers produce these devices using standardized silicon processes to ensure consistent electrical characteristics across production batches.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N4622-1 for hermetic axial-lead versions and the 1N4622DTRE3 for RoHS-compliant axial variants. Check manufacturer cross-reference lists for direct replacements that match the specific tolerance and package requirements.