SMBJ5947CE3/TR13

Single Zener Diodes Overview

The SMBJ5947CE3/TR13 is a surface-mount 2.0W Zener diode from the SMBJ59 family, manufactured by Microchip Technology. It utilizes a DO-214AA (SMB) J-bend package for high-density mounting and offers a nominal Zener voltage of 12V with a ±2% tolerance. The device operates within a junction temperature range of -65°C to +150°C and features a thermal resistance of 35°C/W (junction-to-lead). It is RoHS compliant and supplied in tape-and-reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features low-profile J-bend design suitable for high-density PCB mounting
• Classified as Level 1 moisture sensitivity requiring no dry pack storage
• Capable of withstanding high surge stresses without ESD sensitivity

Single Zener Diodes Applications

• Voltage regulation in general-purpose electronic circuits
• Protection against transient voltage spikes in sensitive components
• Reference voltage sources in power supply designs

Single Zener Diodes Procurement Notes

Verify that the specific part number matches the required Zener voltage and tolerance specifications. Confirm the presence of the 'e3' suffix indicates RoHS compliance and matte-tin plating. Ensure the 'TR' suffix aligns with the required tape-and-reel packaging format for automated assembly processes.

Single Zener Diodes Selection Notes

Select this component when a 2.0W power rating is necessary for Zener applications in a surface-mount form factor. The DO-214AA package provides an axial-lead equivalent footprint, facilitating direct replacement for through-hole designs while allowing for increased board density. Verify thermal management requirements based on the specified junction-to-ambient resistance.

Single Zener Diodes Part Context

This component belongs to the SMBJ59 series of silicon Zener diodes, which are electrically equivalent to the JEDEC registered 1N5918–1N5924 axial-lead series. The SMBJ variant distinguishes itself by offering a 30% higher power rating due to lower thermal resistance characteristics inherent to the plastic encapsulated surface-mount construction.

Single Zener Diodes Replacement Considerations

The SMBJ5947CE3/TR13 is functionally equivalent to the axial-lead 1N5947B. Designers replacing through-hole parts should account for the difference in thermal dissipation capabilities between the DO-214AA package and the original axial leaded component.