1N5373AE3/TR8

Overview

The Microchip Technology 1N5373AE3/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 68 V and ±10% tolerance. It operates within a temperature range of -65°C to +150°C, features a maximum reverse current of 0.5 µA at 49 V, and has a dynamic impedance of 44 Ω. Packaged in an axial T-18 case with a TR suffix for tape and reel delivery, it provides robust voltage regulation suitable for high-power applications.

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 for secure installation

Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• High-current applications utilizing adequate heat sinking
• General-purpose electronic equipment protected against ESD

Procurement Notes

Verify the specific part number 1N5373AE3/TR8 against official manufacturer documentation to confirm availability and exact specifications. The 'e3' suffix indicates RoHS compliance, while 'TR8' denotes tape and reel packaging. Ensure compatibility with existing thermal management designs due to the 5-watt power rating.

Selection Notes

Select this component when a 68 V Zener voltage with ±10% tolerance is required for 5-watt applications. Consider the T-18 axial package for through-hole mounting and verify that the operating environment stays within the specified -65°C to +150°C range. Evaluate thermal resistance requirements if mounting on FR4 PCBs.

Part Context

This device belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. Manufactured by Microsemi (now Microchip Technology), the series covers voltages from 3.3 V to 200 V. The 1N5373 variant specifically targets the 68 V segment of this wide selection.

Replacement Considerations

Compatible replacements include other 1N5373 variants such as 1N5373B or 1N5373E3, provided they match the 68 V specification and 5-watt power rating. Verify that any substitute maintains the same T-18 axial package and electrical tolerances.