1N5346AE3/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5346AE3/TR12 is a silicon Zener diode with a nominal voltage of 9.1 V and a tolerance of ±10%. It operates in the T-18 axial leaded package, dissipating up to 5 W at 25 °C. The device features a maximum dynamic impedance of 2 Ω and a reverse leakage current of 7.5 µA at 6.9 V. It withstands a maximum regulator current of 6.6 A and a surge current of 150 A. Operating temperatures range from -65 °C to +150 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage changes versus current
• Features flexible axial-lead mounting terminals for through-hole integration

Single Zener Diodes Applications

• Voltage regulation circuits requiring 5 W power dissipation
• Power supply reference applications
• Overvoltage protection systems

Single Zener Diodes Procurement Notes

Verify the component status as End-of-Life (EOL) before procurement planning. Confirm RoHS compliance via the e3 suffix and ensure the TR12 designation matches tape-and-reel requirements. Validate that the specific manufacturer documentation aligns with the requested part number to avoid discrepancies in electrical characteristics or packaging specifications.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V Zener voltage with ±10% tolerance is required. Ensure the application supports the 5 W power rating and utilizes adequate heat sinking for high DC currents. Verify that the T-18 axial lead package fits the PCB layout constraints and that the operating temperature range meets environmental demands.

Single Zener Diodes Part Context

This device belongs to the JEDEC registered 1N5333-5388B series of 5.0 watt Zener diodes manufactured by Microsemi, now part of Microchip Technology. The series offers a wide selection of voltages from 3.3 V to 200 V. The 'A' suffix indicates a standard ±10% voltage tolerance, while the 'e3' suffix denotes RoHS compliance.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N5346B and 1N5346D, which share the 9.1 V nominal voltage but differ in tolerance specifications.