1N5355BE3/TR8

Overview

The Microchip Technology 1N5355BE3/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 18 V and ±5% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum dynamic impedance of 2.5 Ohms and a reverse leakage current of 0.5 µA at 13 V. The device utilizes a T-18 axial lead 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 robust thermal performance
• High power dissipation applications with adequate heat sinking
• Industrial environments demanding wide temperature stability

Procurement Notes

Verify the component's end-of-life status and confirm availability from authorized distributors. Ensure the specific TR8 suffix matches the required tape and reel packaging configuration for automated assembly processes.

Selection Notes

Select this component for designs requiring 5-watt power handling and precise 18 V regulation. Confirm that the circuit layout supports the necessary thermal management to maintain junction temperatures within the specified limits during operation.

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, providing versatile options for various power regulation requirements in industrial and commercial electronics.

Replacement Considerations

Consult official datasheets for equivalent parts within the same series or comparable 5-watt Zener diodes from other manufacturers. Verify pinout compatibility and thermal characteristics before substitution.