1N5386BE3/TR8

Overview

The Microsemi Corporation 1N5386BE3/TR8 is a silicon Zener diode with a nominal voltage of 180 V and a power dissipation rating of 5.0 watts at 25 °C. It features a ±5% tolerance, indicated by the B suffix, and utilizes an axial-lead T-18 plastic package. The device operates within a temperature range of -65 °C to +150 °C and has a maximum dynamic impedance of 430 ohms. The e3 suffix confirms RoHS compliance, while the TR8 suffix indicates tape and reel packaging.

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 through-hole applications
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B with no dry pack required

Applications

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

Procurement Notes

Verify that the ordering suffixes match the exact specifications: 'e3' for lead-free/RoHS compliance, 'B' for ±5% tolerance, and 'TR8' for tape and reel packaging. Confirm the manufacturer is Microsemi Corporation or its authorized successor entity. Ensure the component meets the JEDEC registration standards for the 1N5333-5388B series as documented in the official datasheet.

Selection Notes

Select this component when a 180 V Zener voltage with 5 W power handling is required. The ±5% tolerance suits general-purpose regulation where tighter precision is unnecessary. Consider the thermal resistance of 25 °C/W junction-to-lead for heat sinking requirements. Verify compatibility with existing PCB layouts designed for the T-18 axial package.

Part Context

This part belongs to the 1N5333B thru 1N5388B, e3 series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers voltages from 3.3 V to 200 V. The 1N5386 variant specifically targets the 180 V segment of this wide selection, offering standard reliability for industrial and commercial electronics.

Replacement Considerations

Direct replacements must maintain the 180 V Zener voltage, 5 W power rating, and T-18 axial package. Verify that any substitute also carries the 'e3' suffix for RoHS compliance if environmental regulations apply. Check for equivalent dynamic impedance and thermal characteristics to ensure circuit stability.