1N5377C/TR8

Overview

The Microsemi 1N5377C/TR8 is a silicon 5.0-watt Zener diode with a nominal voltage of 91 V and ±2% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 0.5 µA at 65.5 V and a dynamic impedance of 75 Ω. The device utilizes an axial T-18 package and includes a TR suffix for tape and reel packaging.

Feature Summary

• Provides precise voltage regulation with tight manufacturing tolerances
• Capable of handling high surge currents when adequately heat sunk
• Features low thermal resistance design for efficient power dissipation
• Moisture classification Level 1 requiring no dry pack storage

Applications

• Voltage regulation in broad operating current ranges
• High surge stress protection circuits
• Temperature-stable reference applications

Procurement Notes

Verify the specific C suffix indicates the required ±2% tolerance level. Confirm the TR suffix matches the intended tape and reel packaging requirements. Ensure the component meets the necessary RoHS compliance status if applicable to the project specifications.

Selection Notes

Select this component for applications requiring stable voltage regulation with minimal deviation. Consider the thermal resistance characteristics and ensure adequate heat sinking is provided to maintain performance within the specified operating temperature limits.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series offers a wide selection of voltages from 3.3 to 200 volts with various tolerance options identified by specific suffix letters on the part number.

Replacement Considerations

Equivalent parts include 1N5377B for standard tolerance or 1N5377D for tighter tolerance. Surface mount alternatives are available as SMBJ5377B or SMBG5377B.