1N5377/TR8

Overview

The Microsemi Corporation 1N5377/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 91 V and a ±5% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 500 nA at 65.5 V and a dynamic impedance of 75 Ohms. The device utilizes an axial T-18 plastic package and includes a TR suffix for tape and reel packaging.

Feature Summary

• Provides stable voltage regulation across broad operating currents and temperatures
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals in a void-free epoxy body

Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in electronic systems
• Overvoltage protection applications

Procurement Notes

Verify the component matches the specific JEDEC registered series requirements. Confirm that the TR suffix indicates tape and reel packaging as specified by EIA-296 standards. Ensure the B suffix corresponds to the required ±5% voltage tolerance for your design specifications.

Selection Notes

Select this component when a 91 V Zener voltage with 5 W power dissipation is required. Consider the T-18 axial lead form factor for through-hole mounting. Evaluate thermal resistance characteristics if heat sinking or FR4 PC board mounting is necessary for steady-state operation.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi Scottsdale Division. The series offers a wide selection of voltages from 3.3 V to 200 V with various tolerance options identified by suffix letters.

Replacement Considerations

Equivalent parts include the onsemi 1N5377BRLG and Vishay 1N5377A. Verify compatibility regarding package dimensions, power ratings, and electrical tolerances before substitution.