1N5349A/TR12

Overview

The Microchip Technology 1N5349A/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 reverse current of 2.0 µA and a dynamic impedance of 2.5 Ω.

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 in electronic systems
• Overvoltage protection applications

Procurement Notes

Verify component authenticity and datasheet alignment before procurement. Confirm that the specific ordering suffix matches required electrical tolerances and packaging formats. Ensure compliance with applicable environmental standards such as RoHS where mandated. Check for any discontinuance notifications or manufacturing changes affecting availability.

Selection Notes

Select this component when a 5-watt power rating and 12-volt regulation are required. The A suffix indicates a wider voltage tolerance compared to B or C variants. Consider thermal management requirements due to the 5-watt dissipation capability. Verify lead length and mounting constraints against the T-18 package dimensions.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes originally developed by Microsemi's Scottsdale Division. The series covers a wide voltage range from 3.3V to 200V. The 'e3' suffix denotes RoHS compliance, while 'TR12' indicates tape and reel packaging options available for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers: 1N5349B, 1N5349BE3.