1N4764AHR1G

Overview

The 1N4764AHR1G is a silicon planar Zener diode manufactured by Taiwan Semiconductor. It provides a nominal Zener voltage of 100 V with a tolerance of ±5%. The device is rated for 1 W power dissipation and operates within a temperature range of -55 °C to +150 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA at 76 V and a Zener impedance of 350 Ω at the test current of 3 mA. It utilizes a DO-204AL (DO-41) axial leaded package and holds AEC-Q101 qualification.

Feature Summary

• Features a hermetically sealed glass passivated junction designed for high reliability applications.
• Utilizes planar die construction technology to ensure stable performance under varying thermal conditions.
• Complies with automotive quality standards through AEC-Q101 certification.

Applications

• Voltage regulation in automotive electronic systems
• Overvoltage protection circuits in harsh environments
• Reference voltage sources in precision measurement equipment

Procurement Notes

Verify component authenticity and lot traceability directly with Taiwan Semiconductor or authorized distributors. Confirm that the specific batch meets AEC-Q101 requirements if used in automotive contexts. Ensure storage conditions adhere to manufacturer guidelines to maintain the integrity of the glass passivation and lead solderability prior to assembly.

Selection Notes

Select this component when a robust, high-reliability Zener diode is required for automotive or industrial applications. The 100 V rating and ±5% tolerance suit precise voltage clamping needs. Consider the DO-41 package for through-hole mounting constraints and verify that the 1 W power dissipation capability aligns with the thermal management design of the target circuit.

Part Context

This part belongs to the 1N4764 series of 1 Watt Zener diodes produced by Taiwan Semiconductor. The 'HR' suffix typically denotes a hermetic seal variant, while 'R1G' indicates reel packaging. This series is engineered to replace standard military-grade equivalents in modern commercial and automotive electronics, offering enhanced durability compared to non-hermetic plastic packages.

Replacement Considerations

Direct substitutes include other manufacturers' 1N4764A variants in DO-41 packages, such as those from Microsemi or Vishay. Ensure any replacement matches the 100 V Zener voltage, 1 W power rating, and ±5% tolerance. Verify that alternative parts also meet AEC-Q101 standards if automotive qualification is mandatory for the application.