1N5374CE3/TR8

Overview

The Microsemi Corporation 1N5374CE3/TR8 is a silicon Zener diode with a nominal voltage of 75 V and a power dissipation rating of 5.0 W at 25 °C. It features a ±2% voltage tolerance, indicated by the 'C' suffix, and operates within a temperature range of -65 °C to +150 °C. The device utilizes an axial-lead T-18 package and includes RoHS compliance via the 'e3' suffix. Electrical characteristics include a maximum dynamic impedance of 45 Ohms and a maximum reverse current of 0.5 µA.

Feature Summary

• Provides precise voltage regulation with tight ±2% tolerance for sensitive circuit applications
• Capable of handling high surge stresses and maintaining stability over broad operating currents
• Features flexible axial-lead mounting terminals suitable for through-hole PCB integration

Applications

• Voltage regulation in power supply circuits
• Transient voltage suppression in electronic loads
• Reference voltage generation in measurement equipment

Procurement Notes

Verify that the ordering suffix matches the required specifications: 'C' indicates ±2% tolerance, 'e3' confirms RoHS compliance, and '/TR8' specifies tape and reel packaging. Confirm the manufacturer designation as Microsemi Corporation or its successor entity. Ensure the component meets the specific JEDEC registration requirements for the 1N5333B through 1N5388B series before procurement.

Selection Notes

Select this component when a 75 V Zener voltage with high precision (±2%) is required. The 5 W power rating supports operation at high DC currents provided adequate heat sinking is implemented. The T-18 axial package is appropriate for standard through-hole assembly processes. Consider thermal derating curves if ambient temperatures exceed 25 °C or if mounted on FR4 substrates without sufficient copper area.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'e3' suffix denotes lead-free construction compliant with RoHS standards, while the 'TR8' suffix indicates the component is supplied in tape and reel format for automated assembly.

Replacement Considerations

Equivalent parts within the same series include 1N5374B (±5% tolerance) or 1N5374A (±10% tolerance). Surface mount equivalents are available as SMBJ5374B or SMBG5374B. Verify that any substitute maintains the required ±2% tolerance and 5 W power dissipation capabilities.