1N4766

Overview

The Microchip Technology 1N4766 is a temperature-compensated Zener reference diode with a nominal voltage of 9.1 V and ±5% tolerance. It operates in the low current range of 0.5 mA to 1.0 mA, ensuring stable reference performance under varying thermal conditions. The device features metallurgical bonding for enhanced reliability and is housed in a DO-204AH (DO-35) through-hole package.

Feature Summary

• Temperature compensated design for stable voltage reference
• Metallurgically bonded construction for reliability
• Optimized for low current operation

Applications

• Precision voltage reference circuits
• Temperature compensation networks
• Low current regulator applications

Procurement Notes

Verify the specific manufacturer source, as multiple vendors produce this standard part number. Confirm package type availability, noting that while Microchip specifies DO-204AH, other manufacturers may offer DO-7 variants. Ensure the required current range matches your circuit design before procurement.

Selection Notes

Select this component when a stable 9.1 V reference is needed at very low currents. The temperature compensation feature makes it suitable for environments with significant thermal fluctuations. Verify that the operating current aligns with the specified 0.5 mA to 1.0 mA range for optimal performance.

Part Context

This part belongs to the standard 1N47xx series of Zener diodes, widely used for voltage regulation and reference applications. The 1N4766 specifically addresses the need for temperature stability in precision analog circuits where standard Zener diodes might exhibit unacceptable drift.

Replacement Considerations

Check datasheets for equivalent parts from other manufacturers such as STMicroelectronics or Compensated Devices Incorporated. Ensure any substitute maintains the 9.1 V nominal voltage, ±5% tolerance, and temperature compensation characteristics.