SMBJ5944A/TR13

Single Zener Diodes Overview

The SMBJ5944A/TR13 is a surface-mount 2.0 W Zener diode in the DO-214AA (SMB) package, manufactured by Microchip Technology. It provides a nominal Zener voltage of 62 V with a ±5% tolerance. The device features a maximum dynamic impedance of 100 Ω at the test current and operates within a junction temperature range of -65 °C to +150 °C. Packaged in tape and reel format, it offers low thermal resistance for high-density mounting.

Single Zener Diodes Feature Summary

• Surface-mount design in DO-214AA package for high-density PCB mounting
• Low thermal resistance enabling operation at high DC currents with adequate heat sinking
• Moisture classification Level 1 requiring no dry pack storage
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• Protection against high surge stresses
• Replacement for axial-lead JEDEC registered 1N59xx series components

Single Zener Diodes Procurement Notes

Verify the specific suffix 'TR13' indicates tape and reel packaging as defined in the mechanical packaging section. Confirm RoHS compliance status, as standard devices may use SnPb plating while e3 suffixes denote matte-tin plating. Ensure the ordering part number matches the required voltage tolerance and power rating specifications before procurement.

Single Zener Diodes Selection Notes

Select this component when a 2.0 W power rating is required in a compact SMB package. The J-bend lead design facilitates greater board density compared to traditional axial leads. Verify that the application can accommodate the specified thermal resistance values and that the 62 V breakdown voltage aligns with the circuit requirements.

Single Zener Diodes Part Context

This part belongs to the SMBJ59 family of silicon Zener diodes, which are equivalent to the JEDEC registered 1N5918 through 1N5924 series but offer a 30% higher power rating. The family covers Zener voltages from 5.1 V to 9.1 V, though the SMBJ5944 variant specifically addresses higher voltage applications within the broader SMBJ product line context.

Single Zener Diodes Replacement Considerations

Public confirmed substitutes include SMBJ5944B-TP (MCC), 1SMB5944B-13 (Diodes Incorporated), 1SMB5944BT3G (onsemi), and SZ1SMB5944BT3G (onsemi). These parts are identified as parameter equivalents in public documentation.