1N4761AP/TR8

Overview

The Microsemi Corporation 1N4761AP/TR8 is a silicon unidirectional Zener diode designed for voltage regulation and protection applications. It features a nominal Zener voltage of 75 V with a tolerance of ±10% and a maximum power dissipation of 1 W. The component utilizes a DO-204AL (DO-41) axial through-hole package, providing robust mechanical stability. It operates within a temperature range of -65 °C to +150 °C junction temperature. The device is supplied in tape and reel packaging, facilitating automated surface-mount assembly processes despite its through-hole form factor.

Feature Summary

• Provides stable voltage regulation at a nominal 75 V threshold
• Engineered for high thermal endurance up to 150 °C junction temperature
• Constructed with silicon material for reliable unidirectional operation

Applications

• Voltage reference circuits requiring precise 75 V levels
• Overvoltage protection in industrial electronic systems
• Clamping applications in power supply output stages

Procurement Notes

Verify the specific suffix TR8 confirms tape and reel packaging configuration prior to ordering. Confirm that the leaded composition aligns with project requirements, as this variant does not meet RoHS standards. Ensure the DO-41 package dimensions match the target PCB footprint design constraints.

Selection Notes

Select this component when a standard 75 V Zener voltage is required with moderate power handling capabilities. The axial leaded format offers superior heat dissipation compared to smaller surface mount packages. Consider the operating temperature range to ensure compatibility with high-temperature environments exceeding standard commercial limits.

Part Context

This part belongs to the extensive 1N47xxA series of 1-watt Zener diodes manufactured by Microsemi. The series covers a wide voltage selection from 3.3 V to 100 V. The 1N4761 designation specifically identifies the 75 V variant within this standardized JEDEC registered lineup, ensuring interchangeability with other manufacturers producing equivalent specifications.

Replacement Considerations

Equivalent parts include the 1N4761PE3/TR8 from Microsemi, which offers RoHS compliance. Other generic equivalents such as 1N4761A from various manufacturers may be considered if pinout and electrical parameters match exactly.