1N5346CE3/TR8

Overview

The Microchip Technology 1N5346CE3/TR8 is a silicon 5.0-watt Zener diode with a nominal voltage of 9.1V and a tight tolerance of ±2%. It operates within a temperature range of -65°C to +150°C, features a maximum reverse current of 7.5 µA at 6.6V, and has a dynamic impedance of 2.0 Ohms. The component utilizes an axial T-18 package and is supplied in tape and reel format.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance for sensitive circuitry
• Capable of handling high surge currents when adequately heat sunk
• Features low thermal resistance design for efficient power dissipation

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in industrial equipment
• Power supply regulation systems

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm tolerance and packaging details. Ensure compatibility with existing thermal management designs due to the 5W power rating. Confirm RoHS compliance status through manufacturer documentation before integration into final assemblies.

Selection Notes

Select this component when strict voltage accuracy is required compared to standard ±5% or ±10% variants. Consider the T-18 package dimensions and lead length requirements for proper mounting. Evaluate thermal derating curves if operating above ambient temperatures to ensure reliability under steady-state conditions.

Part Context

This device belongs to the JEDEC registered 1N5333B through 1N5388B series of 5-watt Zener diodes manufactured by Microsemi (now Microchip). The series offers a wide voltage selection from 3.3V to 200V with various tolerance options identified by suffix letters.

Replacement Considerations

Equivalent parts include other 9.1V 5W Zener diodes with ±2% tolerance such as those from the 1N5346C series. Verify pinout compatibility and thermal characteristics when substituting.