1N5346C/TR8

Overview

The Microchip Technology 1N5346C/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 9.1 V and a ±2% tolerance. It operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. The device has a maximum reverse current of 7.5 µA at 6.6 V, a dynamic impedance of 2.0 Ω, and a maximum regulator current of 6.6 A.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for secure installation

Applications

• Voltage regulation circuits requiring tight tolerance stability
• High power dissipation applications with adequate heat sinking
• Surge protection environments demanding robust component endurance

Procurement Notes

Verify the specific suffix 'TR8' against official documentation to confirm tape and reel packaging requirements. Confirm RoHS compliance status as standard variants may differ from e3 designations. Validate that the C suffix corresponds to the required ±2% tolerance for your circuit specifications before procurement.

Selection Notes

Select this component when a 9.1 V reference requires tighter than standard manufacturing tolerances. Ensure the application supports the 5 W power dissipation rating through appropriate thermal management. Verify that the T-18 package dimensions fit the available board space and that the lead configuration matches the assembly process.

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 3.3 V to 200 V. The C suffix specifically denotes a tighter ±2% voltage tolerance compared to the standard B (±5%) or A (±10%) variants.

Replacement Considerations

Compatible substitutes include other 9.1 V 5 W Zener diodes with ±2% tolerance in a T-18 package. Verify equivalent thermal resistance and maximum surge current ratings to ensure circuit performance remains unchanged during replacement.