SMBJ5951BE3/TR13

Single Zener Diodes Overview

The SMBJ5951BE3/TR13 is a surface mount 2.0 W Zener diode from the SMBJ59 family, equivalent to JEDEC registered 1N5918–1N5924 series. It features a DO-214AA (SMB) J-bend package for high-density mounting and operates within a junction temperature range of -65 °C to +150 °C. The device provides a nominal Zener voltage of 5.1 V with a ±5% tolerance, tested at 73.5 mA. Maximum dynamic impedance is 4.0 Ω at IZT and 400 Ω at IZK. It withstands off-state power dissipation of 2.0 W at lead temperatures below 80 °C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features low thermal resistance design allowing operation at high maximum DC currents with adequate heat sinking
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020
• Withstands high surge stresses with minimal changes in voltage versus current

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High-density and low-profile circuit board mounting applications
• Protection against high surge stresses in electronic circuits

Single Zener Diodes Procurement Notes

Verify the specific suffix 'e3' indicates RoHS compliance with matte-tin plating and 'TR13' denotes tape and reel packaging per EIA-481-1-A standard. Confirm that the part number corresponds to the 5.1 V variant within the SMBJ5918B–SMBJ5924Be3 family. Ensure sourcing channels provide original manufacturer documentation to validate electrical characteristics and mechanical specifications.

Single Zener Diodes Selection Notes

Select this component when a 2.0 W power rating is required in a surface mount format, offering a 30% higher rating than the axial 1N5918–1N5924 equivalents. Choose the SMBJ5951BE3 specifically for a 5.1 V nominal breakdown voltage with tight ±5% tolerance. Consider the DO-214AA package dimensions for PCB layout constraints and verify thermal management requirements for maintaining junction temperatures within specified limits during operation.

Single Zener Diodes Part Context

This device belongs to the SMBJ59 family of silicon 2.0 Watt Zener diodes manufactured by Microchip Technology. The family covers Zener voltages from 5.1 V to 9.1 V and includes variants with different tolerances. The SMBJ5951BE3 represents the 5.1 V option with 5% tolerance, utilizing the SMBJ J-bend design in the DO-214AA package for improved mounting density compared to previous SMS package identifications.

Single Zener Diodes Replacement Considerations

The SMBJ5951BE3 is electrically equivalent to the JEDEC registered 1N5918 series but rated at 2.0 W instead of 1.5 W due to lower thermal resistance. For through-hole mounting requirements, the 1N5918 series serves as an axial-lead equivalent. Verify that any replacement maintains the 2.0 W power rating and DO-214AA package compatibility.