1N5349CE3/TR13

Overview

The Microchip Technology 1N5349CE3/TR13 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 12 volts with a ±5% tolerance, indicated by the 'B' 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 at a test current of 100 mA and a maximum reverse leakage current of 2.0 µA.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole integration
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• Power supply protection against transient overvoltages
• Reference voltage generation in industrial equipment

Procurement Notes

Verify the component authenticity by checking the manufacturer marking on the T-18 package body. Confirm the presence of the e3 suffix indicates RoHS compliance and annealed matte-tin plating. Ensure the TR13 designation matches the required tape and reel packaging standard per EIA-296 for automated assembly processes.

Selection Notes

Select this component when a 12-volt regulation point is required with a 5-watt power rating. The B suffix ensures a tight ±5% voltage tolerance suitable for precision applications. Consider the thermal resistance of 25°C/W junction-to-lead when designing heat sinking solutions for continuous operation above 25°C ambient temperature.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series covers a wide voltage selection from 3.3V to 200V in a robust plastic encapsulated case. These devices are designed for high DC currents and offer military screening options via specific prefix identifiers.

Replacement Considerations

Surface mount equivalents are available as SMBJ5349 or SMBG5349. For non-RoHS requirements, check the 1N5349B without the e3 suffix. Verify that any substitute maintains the same T-18 axial lead form factor and 5-watt power dissipation capability.