1N5387BE3/TR12

Overview

The Microsemi Corporation 1N5387BE3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, housed in an axial-leaded T-18 plastic package with tape and reel packaging. It provides voltage regulation at a nominal Zener voltage of 190 V with a ±5% tolerance. The device operates within a temperature range of -65°C to +150°C and features a maximum reverse leakage current of 500 nA at 137 V. Its maximum dynamic impedance is 450 ohms, and it withstands high surge stresses while maintaining minimal voltage changes versus current.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for versatile installation
• RoHS compliant construction available via specific suffix identification

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection systems
• Reference voltage generation in electronic instrumentation

Procurement Notes

Verify that the component matches the exact part number 1N5387BE3/TR12 to ensure correct RoHS compliance and tape-and-reel packaging configuration. Confirm the manufacturer origin as Microsemi Corporation or its successor entity. Check datasheet specifications against design requirements for voltage tolerance and thermal performance before finalizing procurement orders.

Selection Notes

Select this component when a 190 V Zener voltage with tight ±5% tolerance is required for high-power applications. Ensure adequate heat sinking is provided to manage the 5-watt power dissipation effectively. Verify that the axial lead form factor fits the intended PCB layout constraints and that the operating temperature range meets environmental demands.

Part Context

This device belongs to the 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 to 200 volts with various tolerance options identified by suffix letters. These components are designed for robust performance in demanding environments with low thermal resistance characteristics.

Replacement Considerations

Consult official Microsemi documentation for verified substitute part numbers within the same series or equivalent military screening levels.