1N5358/TR12

Overview

The Microchip Technology 1N5358/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333B-1N5388B series. It features a nominal Zener voltage of 22V with a ±5% tolerance, indicated by the 'B' suffix. The device operates at a test current of 50mA and exhibits a maximum dynamic impedance of 3.5 ohms. It supports a maximum regulator current of 4.7A when adequately heat sunk. The component is supplied in tape and reel packaging, denoted by the '/TR12' suffix, suitable for automated assembly processes.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal voltage change versus current variations
• Features flexible axial-lead mounting terminals for versatile integration
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

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

Procurement Notes

Verify that the ordering suffix matches the required packaging format. The '/TR12' designation indicates tape and reel configuration. Confirm RoHS compliance status if environmental regulations apply. Ensure the specific batch corresponds to the manufacturer's current revision. Cross-reference the part number with official distributor catalogs to confirm availability and authenticity before finalizing procurement orders.

Selection Notes

Select this component for applications requiring 5-watt power dissipation capabilities. The 22V nominal voltage suits specific regulation needs within the 3.3V to 200V range. Consider thermal management requirements due to the junction-to-lead thermal resistance specification. Evaluate the ±5% tolerance against circuit precision requirements. Ensure adequate heat sinking is provided to maintain performance within specified limits during operation.

Part Context

This component belongs to the Microsemi Scottsdale Division 1N5333B through 1N5388B series of silicon Zener diodes. These devices are designed for general-purpose voltage regulation tasks. The series offers various voltage options and tolerance levels. The 1N5358 variant specifically targets the 22V application segment. The product line emphasizes reliability and robustness for industrial environments.

Replacement Considerations

Surface mount equivalents such as SMBJ5358B or SMBG5358B are available from the same manufacturer. Verify pin compatibility and thermal characteristics when substituting axial leads with surface mount packages. Ensure the replacement maintains the required 5-watt power rating and voltage tolerance specifications.