1N5346E3/TR8

Overview

The Microchip Technology 1N5346E3/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 9.1 V and ±5% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum reverse leakage current of 7.5 µA at 6.6 V and a dynamic impedance of 2.0 Ω at a test current of 150 mA. The component utilizes an axial-lead T-18 package and is supplied in tape and reel format.

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

Applications

• Voltage regulation circuits requiring 5W power dissipation
• High-current applications with adequate heat sinking
• General-purpose electronic equipment protection

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm RoHS compliance and packaging type. Confirm availability status as distribution channels may vary. Ensure thermal management design accounts for the specified junction-to-lead thermal resistance during operation.

Selection Notes

Select this component for applications requiring a 9.1V reference with ±5% precision. Consider the T-18 package dimensions and lead length requirements for PCB layout. Evaluate thermal derating curves if ambient temperatures exceed standard conditions or if surface mount alternatives are unsuitable.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon Zener diodes. The series offers a wide selection of voltages from 3.3V to 200V in a robust plastic encapsulated axial-lead package designed for high-power regulation tasks.

Replacement Considerations

Compatible equivalents include other manufacturers' 1N5346 variants. Verify that substitute parts match the 5W power rating, 9.1V Zener voltage, and T-18 package form factor to ensure mechanical and electrical compatibility.