1N5377AE3/TR12

Overview

The Microsemi Corporation 1N5377AE3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across broad operating current and temperature ranges. It features a nominal Zener voltage of 91 volts with a standard tolerance of ±10%, indicated by the 'A' suffix. The device utilizes an axial-lead T-18 package with void-free transfer molded thermosetting epoxy meeting UL94V-0 standards. RoHS compliance is confirmed by the 'e3' suffix, indicating annealed matte-tin plating. The component operates within a temperature range of -65°C to +150°C and withstands high surge stresses.

Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Features flexible axial-lead mounting terminals for versatile installation
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Applications

• Voltage regulation circuits requiring robust thermal performance
• Power supply protection against high surge stresses
• Electronic systems operating under extreme environmental temperatures

Procurement Notes

Verify that the ordering suffix 'TR12' corresponds to the tape and reel packaging option specified in the datasheet. Confirm the 'e3' suffix indicates RoHS compliance and matte-tin plating. Ensure the 'A' suffix matches the required ±10% voltage tolerance. Cross-reference the manufacturer part number with official Microsemi documentation to validate authenticity and current production status.

Selection Notes

Select this component when a 91-volt Zener diode with ±10% tolerance is required for 5-watt power dissipation applications. Consider the T-18 axial lead package for through-hole mounting where flexibility is needed. Verify that the operating environment falls within the -65°C to +150°C range. Ensure adequate heat sinking is provided if steady-state power dissipation exceeds 1.47 watts at 25°C ambient temperature on FR4 PC boards.

Part Context

This device belongs to the Microsemi 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a voltage selection from 3.3 to 200 volts with various tolerance options identified by specific suffix letters. These plastic encapsulated Zeners are JEDEC registered and feature low thermal resistance designs suitable for high maximum DC currents.

Replacement Considerations

Equivalent parts within the same series include 1N5377B (±5% tolerance), 1N5377C (±2% tolerance), and 1N5377D (±1% tolerance). Surface mount equivalents such as SMBJ5377 or SMBG5377 may be considered if package compatibility allows.