1N5358E3/TR8

Overview

The Microchip Technology 1N5358E3/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 22V. It features a maximum dynamic impedance of 3.5 ohms and a maximum reverse current of 0.5 microamperes at 16.7 volts. The device operates within a temperature range of -65°C to +150°C and utilizes a T-18 axial lead package.

Feature Summary

• Provides stable voltage regulation across broad operating currents and temperatures
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for secure installation

Applications

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

Procurement Notes

Verify the component against official datasheets to confirm the specific suffix requirements for tolerance and packaging. Ensure that the procurement channel provides traceability documentation, as this part belongs to a series with multiple screening levels and historical manufacturing transitions.

Selection Notes

Select this component when a 22-volt regulation point is required with a 5-watt power dissipation capacity. Consider the thermal resistance characteristics and ensure adequate heat sinking if operating near maximum DC current limits. Verify that the ±5% tolerance aligns with the circuit design specifications.

Part Context

This component is part of the JEDEC registered 1N5333B through 1N5388B series manufactured by Microsemi (now Microchip Technology). The series offers a wide selection of voltages from 3.3 to 200 volts in a plastic encapsulated T-18 package designed for through-hole mounting applications.

Replacement Considerations

Direct replacements include other parts within the 1N5333B-1N5388B series or equivalent 5W Zener diodes from other manufacturers. Verify pinout compatibility and thermal performance before substitution.