1N5378C/TR8

Overview

The Microsemi Corporation 1N5378C/TR8 is a silicon unidirectional Zener voltage regulator diode rated for 5.0 watts of power dissipation. It features an axial-lead T-18 package and provides a nominal Zener voltage of 100 V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and includes a tape and reel option denoted by the 'TR8' suffix.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals suitable for through-hole applications

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement equipment

Procurement Notes

Verify that the ordering suffix matches the required specifications, as the 'C' suffix denotes a specific ±2% voltage tolerance and the 'TR8' indicates tape and reel packaging. Confirm RoHS compliance status if environmental regulations apply, as standard versions may not be compliant. Ensure the manufacturer designation aligns with current corporate records following industry acquisitions.

Selection Notes

Select this component when a precise 100 V reference with tight tolerance is required in a high-power axial package. Consider the thermal resistance characteristics and derating curves for adequate heat sinking. Evaluate the maximum steady-state power dissipation limits based on the specific mounting method and ambient temperature conditions.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'C' suffix identifies the tighter manufacturing tolerance compared to standard B or A suffix variants within the same family.

Replacement Considerations

Cross-reference with other manufacturers offering equivalent 5 W axial Zener diodes at 100 V with ±2% tolerance. Verify mechanical dimensions and pinout compatibility before substitution.