1N5337E3/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N5337E3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, housed in an axial-leaded T-18 package with a void-free transfer molded thermosetting epoxy body. It provides a nominal Zener voltage of 4.7 volts at a test current of 260 mA, featuring a maximum dynamic impedance of 2.0 ohms and a maximum reverse leakage current of 5 µA at 1.0 volt. The device supports a maximum regulator current of 1010 mA and withstands surge currents up to 450 amps. RoHS compliant due to the e3 suffix, it operates within a temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across broad operating current and temperature ranges
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for secure installation
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific part number against official Microsemi documentation to confirm the presence of the e3 suffix for RoHS compliance and TR12 for tape-and-reel packaging. Ensure that the required tolerance aligns with the B suffix designation. Confirm availability status as this component may be subject to discontinuation or lifecycle changes.

Single Zener Diodes Selection Notes

Select this component when a 4.7-volt regulation point is required with a 5-watt power dissipation capability. Consider the low thermal resistance design if operation at high maximum DC currents is necessary with adequate heat sinking. Verify that the axial lead form factor fits the mechanical constraints of the target assembly.

Single Zener Diodes 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 plastic encapsulated diodes are designed for applications requiring robust performance under high stress conditions.

Single Zener Diodes Replacement Considerations

Surface mount equivalents such as SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B are available from the same manufacturer. Military equivalent screening levels can be obtained by adding MQ, MX, or MV prefixes to the base part numbers.