1N5358A/TR8

Overview

The Microchip Technology 1N5358A/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by the Microsemi Scottsdale Division. It provides voltage regulation at a nominal Zener voltage of 22 volts with a standard tolerance of ±10%, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial-lead package. Electrical characteristics include a maximum dynamic impedance of 3.5 ohms and a maximum reverse current of 0.5 microamperes.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification Level 1 requiring no dry pack storage

Applications

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

Procurement Notes

Verify the manufacturer origin carefully, as this component originates from the Microsemi Scottsdale Division, which has undergone corporate acquisition. Confirm that the specific ordering suffix matches the required tolerance and packaging format. Ensure compatibility with existing thermal management designs due to the 5-watt power dissipation rating. Check for RoHS compliance status if environmental regulations apply to the final assembly.

Selection Notes

Select this component when a 22-volt regulation point is required with a ±10% tolerance. The T-18 package supports up to 5 watts of power dissipation, suitable for applications requiring adequate heat sinking. Consider the maximum dynamic impedance and reverse leakage current specifications to ensure they meet the precision requirements of the target circuit design.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages ranging from 3.3 to 200 volts. Different suffix letters identify specific voltage tolerances, with 'A' denoting ±10%. The devices are plastic encapsulated with void-free transfer molded thermosetting epoxy bodies meeting UL94V-0 standards.

Replacement Considerations

Equivalent parts within the same series include 1N5358B (±5% tolerance) or 1N5358C (±2% tolerance). Surface mount equivalents such as SMBJ5358A or SMBG5358A are available for space-constrained designs.