1N5349E3/TR8

Single Zener Diodes Overview

The Microchip Technology 1N5349E3/TR8 is a silicon 5-watt Zener diode with a nominal voltage of 12 V and ±5% tolerance. It operates within a temperature range of -65°C to +150°C, featuring a maximum reverse current of 125 µA at 8.6 V and a dynamic impedance of 2.5 Ω at a test current of 100 mA. The device utilizes a T-18 axial lead package and includes an e3 suffix indicating RoHS compliance.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across broad operating currents and temperatures
• Features flexible axial-lead mounting terminals for through-hole applications
• Withstands high surge stresses without sensitivity to electrostatic discharge

Single Zener Diodes Applications

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

Single Zener Diodes Procurement Notes

Verify the specific part number against official manufacturer documentation to confirm RoHS compliance status associated with the e3 suffix. Ensure that the TR8 tape and reel packaging configuration matches your automated assembly requirements. Cross-reference thermal derating curves for accurate power dissipation calculations under your specific mounting conditions.

Single Zener Diodes Selection Notes

Select this component when a 5-watt power rating and 12-volt regulation are required. Consider the T-18 package dimensions for board space constraints. Evaluate the thermal resistance characteristics relative to your heat sinking strategy to ensure operation remains within the specified junction-to-ambient limits during steady-state conditions.

Single Zener Diodes Part Context

This component belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers a wide selection of voltages from 3.3 to 200 volts with various tolerance options identified by suffix letters. These devices are designed for robust performance in demanding environments.

Single Zener Diodes Replacement Considerations

Consult official datasheets for equivalent parts within the 1N5333B-1N5388B series or surface mount equivalents like SMBJ5349B. Verify that any substitute maintains the same 5-watt power rating, 12-volt Zener voltage, and T-18 package compatibility.