1N5385CE3/TR13

Overview

The Microsemi Corporation 1N5385CE3/TR13 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B to 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 170 V with a tight tolerance of ±2%. The device operates within a temperature range of -65°C to +150°C and features an axial-lead T-18 package. Electrical characteristics include a maximum dynamic impedance of 380 Ohms, a reverse current of 0.5 µA tested at 122 V, and a maximum regulator current of 28 A when adequately heat sunk.

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 requiring no dry pack

Applications

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

Procurement Notes

Verify that the part number includes the 'e3' suffix to confirm RoHS compliance and matte-tin plating. Ensure the 'TR13' suffix matches the required tape and reel packaging format. Confirm the 'C' suffix indicates the specific ±2% voltage tolerance required for the design. Cross-reference the manufacturer's latest datasheet to verify current production status and any potential obsolescence notices.

Selection Notes

Select this component when a 170 V reference with high precision is required. The ±2% tolerance makes it suitable for applications demanding tighter voltage accuracy than standard B or A suffix devices. Consider the 5 W power dissipation rating and thermal resistance requirements for adequate heat sinking. Verify that the axial lead configuration fits the PCB layout constraints compared to surface mount equivalents.

Part Context

This component belongs to the Microsemi 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'e3' designation indicates environmental compliance, while the 'TR13' suffix specifies the reel packaging method. These plastic encapsulated diodes are designed for high reliability and robust performance in various industrial environments.

Replacement Considerations

Surface mount equivalents such as SMBJ5385C or SMBG5385C provide identical electrical characteristics in different packages. For higher reliability needs, military screening options like JAN, JANTX, or JANTXV are available by adding MQ, MX, or MV prefixes respectively.