1N5377B/TR12

Overview

The Microsemi Corporation 1N5377B/TR12 is a silicon Zener diode with a nominal voltage of 91V and a ±5% tolerance. It operates in the 1N5333-5388B series, providing 5W power dissipation at 25°C. The device features an axial lead T-18 plastic package and includes a tape and reel option indicated by the TR suffix. Electrical characteristics include a test current of 15mA, maximum dynamic impedance of 75Ω, and maximum reverse current of 0.5μA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal voltage change versus current
• Features flexible axial-lead mounting terminals for versatile integration
• Moisture classification Level 1 requires no dry pack handling

Applications

• Voltage regulation circuits requiring 91V reference
• Power supply protection against overvoltage conditions
• General purpose rectification and clamping applications

Procurement Notes

Verify the specific suffix configuration to ensure compatibility with required screening levels and packaging formats. Confirm RoHS compliance status based on the e3 designation if applicable. Check datasheet thermal derating curves for proper heat sinking requirements during operation. Ensure ordering specifications match the exact voltage tolerance and package type needed for the design.

Selection Notes

Select this component when a 91V Zener voltage with ±5% tolerance is required for 5W applications. Consider the TR suffix for automated assembly needs. Evaluate thermal management strategies as power dissipation decreases with increasing ambient temperature. Compare dynamic impedance and leakage current specifications against circuit sensitivity requirements.

Part Context

This part belongs to the JEDEC registered 1N5333 through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series covers a voltage selection from 3.3 to 200 volts. Different suffix letters identify specific voltage tolerances, while prefixes can indicate military equivalent screening levels. The standard B suffix denotes a ±5% tolerance.

Replacement Considerations

Equivalent parts within the 1N5333-5388B series share similar mechanical and electrical profiles. Verify that substitute components meet the same MIL-PRF-19500 screening standards if military grade reliability is required. Ensure replacement devices maintain the same T-18 package dimensions and terminal plating specifications.