SMBG5942A/TR13

Single Zener Diodes Overview

The SMBG5942A/TR13 is a surface-mount Zener voltage regulator diode manufactured by Microsemi Corporation. It belongs to the SMBJ series, which provides electrical characteristics equivalent to the JEDEC registered 1N5942B axial series but with an increased power rating of 2.0 W compared to the 1.5 W rating of the axial counterparts. This enhancement is enabled by the lower thermal resistance inherent in the DO-214AA (SMB) package. The device features a J-bend lead design that permits greater printed circuit board mounting density. It is supplied in cut tape or reel packaging.

Single Zener Diodes Feature Summary

• Provides voltage regulation within the 3.3 V to 200 V selection range with tolerance options including 10%, 5%, and 2%.
• Features a J-bend design in the DO-214AA package to permit greater PC board mounting density.
• Offers a higher 2.0 W power rating compared to the 1.5 W rating of the equivalent axial JEDEC series.

Single Zener Diodes Applications

• Voltage regulation in electronic circuits requiring surface-mount technology.
• High-density printed circuit board mounting applications.
• Replacement for axial-leaded 1N5942B devices where higher power dissipation is required.

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized distribution channels due to potential availability constraints. Confirm RoHS compliance status as the standard SMBJ series may be available in both compliant and non-compliant variants depending on specific ordering suffixes. Ensure the selected variant matches the required voltage tolerance and power rating specifications for the intended application environment.

Single Zener Diodes Selection Notes

Select this component when a surface-mount solution is required for voltage regulation tasks previously addressed by axial 1N5942B diodes. The choice is driven by the need for improved thermal performance and higher power handling capability in a compact footprint. Consider the J-bend package geometry for optimal PCB layout efficiency and verify that the operating temperature range meets system requirements.

Single Zener Diodes Part Context

This part is a member of the SMB(G/J)5913–SMB(G/J)5956 series of silicon Zener diodes. The series shares identical electrical characteristics with the corresponding JEDEC registered 1N5913–1N5956 axial series, distinguished primarily by the enhanced 2.0 W power rating and surface-mount packaging format. The SMBJ variant specifically utilizes the DO-214AA package with J-bends, differentiating it from the SMBG gull-wing design.

Single Zener Diodes Replacement Considerations

The SMBG5942A serves as a direct functional replacement for the axial 1N5942B diode, offering superior power dissipation capabilities. Designers transitioning from axial to surface-mount should account for the differences in thermal resistance and physical footprint. Verify that the PCB land pattern accommodates the DO-214AA J-bend configuration.