1N5345/TR8

Single Zener Diodes Overview

The Microchip Technology 1N5345/TR8 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation with a nominal Zener voltage of 9.1 V and a ±5% tolerance. 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 maximum dynamic impedance of 2.0 Ohms, a maximum reverse current of 7.5 µA, and a maximum regulator current of 6.6 A.

Single Zener Diodes 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

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR8' against official documentation to confirm tape and reel packaging details. Confirm RoHS compliance status as the source datasheet indicates 'e3' suffixes for compliance while standard parts may differ. Check for discontinuance notifications or lifecycle changes directly from the manufacturer before procurement planning.

Single Zener Diodes Selection Notes

Select this component for applications requiring 5-watt power dissipation and precise voltage regulation near 9.1 V. Ensure adequate heat sinking is provided to maintain performance within the specified thermal resistance limits. Verify that the required surge current handling and dynamic impedance meet the circuit design specifications.

Single Zener Diodes Part Context

This part belongs to the Microsemi (now Microchip) 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 with various tolerance options identified by suffix letters. These devices are designed for high DC currents with low thermal resistance.

Single Zener Diodes Replacement Considerations

Consult the official datasheet for equivalent military screening levels using MQ, MX, or MV prefixes. Surface mount equivalents such as SMBJ5345B or SMBG5345B are available for space-constrained designs.