1N5374AE3/TR8

Overview

The Microsemi Corporation 1N5374AE3/TR8 is a silicon unidirectional Zener diode with a nominal voltage of 75 V and a power dissipation rating of 5.0 W at 25 °C. It features an A suffix indicating a standard tolerance of ±10%. The device utilizes a T-18 axial lead plastic package, complies with RoHS standards via the e3 suffix, and operates within a temperature range of -65 °C to +150 °C.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for versatile installation
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

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

Procurement Notes

Verify that the part number includes the 'e3' suffix to confirm RoHS compliance and the 'TR8' suffix to ensure tape and reel packaging. Confirm the 'A' suffix corresponds to the required ±10% voltage tolerance. Ensure the supplier provides documentation verifying JEDEC registration for the 1N5374 series.

Selection Notes

Select this component when a 75 V regulation point is required with a 5 W power handling capability. The ±10% tolerance suits applications where tight precision is not critical. Verify thermal management requirements, as steady-state power dissipation decreases significantly when mounted on FR4 PCBs compared to direct lead heating.

Part Context

This component belongs to the 1N5333B through 1N5388B series of JEDEC registered silicon Zener diodes. The series covers a voltage selection from 3.3 V to 200 V. The specific model utilizes a void-free transfer molded thermosetting epoxy body meeting UL94V-0 standards.

Replacement Considerations

Equivalent parts include the 1N5374BG (onsemi) and 1N5374A (EIC). Verify that replacement devices match the 5 W power rating, 75 V nominal voltage, and T-18 or DO-15 axial package dimensions.

FAQ

What does the 'e3' suffix indicate?

The 'e3' suffix indicates that the device is RoHS compliant and features annealed matte-Tin plating on the terminals.

How is polarity identified on the device?

Polarity is indicated by a band on the cathode end. The diode must be operated with the banded end positive with respect to the opposite end.