1N5349AE3/TR12

Overview

The Microchip Technology 1N5349AE3/TR12 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 12 V with a ±10% tolerance, indicated by the 'A' suffix. The device operates within a temperature range of -65°C to +150°C and features an axial-lead T-18 package. Electrical characteristics include a maximum dynamic impedance of 2.5 Ohms and a maximum reverse current of 2.0 µA.

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
• Moisture classification Level 1 requiring no dry pack storage

Applications

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

Procurement Notes

Verify component authenticity and datasheet revision status prior to procurement. Confirm that the specific ordering suffix matches the required tolerance and packaging configuration. Ensure compliance with RoHS directives if applicable to the design requirements. Check for any discontinuance notifications or lifecycle changes associated with the manufacturer's product portfolio.

Selection Notes

Select this component when a 12 V reference with ±10% tolerance is required in a 5 W axial package. Consider the thermal resistance and derating curves for high-current applications. Verify that the lead length and mounting style align with the PCB layout constraints. Compare against other suffixes if tighter voltage tolerances are necessary.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes originally developed by Microsemi. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'e3' suffix indicates RoHS compliance, while 'TR12' denotes tape and reel packaging. The product line is designed for robust performance in industrial and commercial environments.

Replacement Considerations

Direct substitutes within the same series include parts with different voltage ratings but identical power and package specifications. Cross-reference with other manufacturers offering equivalent 5 W axial Zener diodes, ensuring matching electrical parameters such as dynamic impedance and reverse leakage current.