1N5346BE3/TR8

Overview

The Microchip Technology 1N5346BE3/TR8 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333B-1N5388B series. It provides voltage regulation at a nominal Zener voltage of 9.1 V with a ±5% tolerance, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a test current of 150 mA, a maximum dynamic impedance of 2.0 Ohms, and a maximum reverse leakage current of 7.5 µA.

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 through-hole integration
• Moisture classification Level 1 requiring no dry pack storage

Applications

• Voltage regulation in power supply circuits
• Reference voltage generation for analog circuits
• Overvoltage protection for sensitive components

Procurement Notes

Verify the component origin as the datasheet originates from Microsemi, now part of Microchip Technology. Confirm RoHS compliance via the e3 suffix and check for specific military screening prefixes if required. Ensure the TR8 suffix matches the tape and reel packaging requirement for automated assembly processes.

Selection Notes

Select this component for applications requiring 5-watt power dissipation and precise 9.1 V regulation. Consider the thermal resistance of 25°C/W junction-to-lead when designing heat sinking. Verify that the ±5% tolerance meets circuit requirements and that the T-18 package dimensions fit the PCB layout constraints.

Part Context

This part belongs to the 1N5333B-1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The B suffix specifically denotes a standard ±5% voltage tolerance. These devices are designed for high DC currents with adequate heat sinking and feature void-free transfer molded epoxy bodies.

Replacement Considerations

Consult the manufacturer's official documentation for confirmed substitute part numbers or equivalents.