SMBJ5939AE3/TR13

Single Zener Diodes Overview

The SMBJ5939AE3/TR13 is a surface-mount 2.0W Zener diode from the SMBJ59 family, manufactured by Microchip Technology. It utilizes the DO-214AA (SMB) package with a J-bend design for high-density mounting. The device features a nominal Zener voltage of 8.2V with a ±5% tolerance. Electrical characteristics include a maximum dynamic impedance of 6.0Ω at a test current of 30mA and a maximum reverse leakage current of 1.0µA at 5.0V. The component operates within a junction temperature range of -65°C to +150°C and offers low thermal resistance.

Single Zener Diodes Feature Summary

• Surface-mount construction in DO-214AA package with J-bend design for increased board density
• Moisture classification Level 1 requiring no dry pack storage
• Low thermal resistance enabling operation at high DC currents with adequate heat sinking
• RoHS compliant matte-tin plating available with e3 suffix

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Protection against high surge stresses
• Replacement for axial-lead JEDEC registered 1N5918–1N5924 series

Single Zener Diodes Procurement Notes

Verify the specific part number against official Microchip documentation to confirm electrical parameters and package details. Ensure compatibility with RoHS requirements if applicable. Check for availability status as distribution channels may vary. Confirm tape and reel specifications match manufacturing needs. Validate that the selected variant meets the required voltage tolerance and power dissipation limits for the intended application.

Single Zener Diodes Selection Notes

Select this component when a 2.0W surface-mount Zener diode is required in place of lower-power axial equivalents. The DO-214AA package supports higher mounting density compared to traditional through-hole options. Consider the ±5% voltage tolerance for precision regulation tasks. Evaluate thermal management requirements based on the specified junction-to-lead thermal resistance values provided in the datasheet.

Single Zener Diodes Part Context

This device belongs to the SMBJ59 family of silicon Zener diodes, which are electrically equivalent to the JEDEC registered 1N5918 through 1N5924 series but offer a higher power rating of 2.0W due to lower thermal resistance. The family covers Zener voltages from 5.1V to 9.1V. The SMBJ5939AE3/TR13 specifically denotes the 8.2V variant with 5% tolerance, RoHS compliance, and tape-and-reel packaging.

Single Zener Diodes Replacement Considerations

The SMBJ5939AE3/TR13 serves as a direct surface-mount replacement for the axial-lead 1N5939B diode. Designers should account for the difference in package dimensions and mounting style when transitioning from through-hole to SMD layouts.