SMAJ5943B-TP

Single Zener Diodes Overview

The SMAJ5943B-TP is a 1.5 Watt Zener diode from the SMAJ59xxB series by Micro Commercial Components, designed for surface mount applications in the SMA (DO-214AC) package. It features a nominal Zener voltage of 56 Volts with a ±5% tolerance and a test current of 6.7 mA. The device exhibits a maximum dynamic impedance of 86 Ohms at the test current and a knee impedance of 0.25 Ohms at 0.25 mA. Maximum reverse leakage current is specified as 0.5 µA at a reverse voltage of 42.6 V. It operates within a junction temperature range of -65°C to +150°C.

Single Zener Diodes Feature Summary

• Halogen-free "Green" device construction with epoxy meeting UL 94 V-0 flammability rating
• Lead-free finish compliant with RoHS directives
• Moisture Sensitivity Level 1 classification for standard surface mount processing

Single Zener Diodes Applications

• Voltage regulation circuits
• Transient voltage suppression
• Reference voltage sources

Single Zener Diodes Procurement Notes

Verify authenticity through authorized MCC distributors or direct purchase to avoid counterfeit components. Confirm the specific part number SMAJ5943B-TP matches design requirements. Check for recent Product Change Notifications (PCN) regarding manufacturing updates. Ensure storage conditions align with Moisture Sensitivity Level 1 guidelines before soldering.

Single Zener Diodes Selection Notes

Select this component for designs requiring a 56V reference or protection in compact surface mount layouts. The SMA (DO-214AC) package offers space efficiency compared to axial leads. Consider the thermal resistance characteristics when determining heat dissipation needs in high-power environments. Verify that the 1.5W power rating suffices for the expected transient energy levels.

Single Zener Diodes Part Context

This part belongs to the SMAJ5918B through SMAJ5956B series, covering Zener voltages from 5.1V to 200V. The series utilizes the SMA surface mount lead frame. The "-TP" suffix indicates tape and reel packaging with a quantity of 7,500 pieces per reel. The marking code on the device body is "43B".

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers offering SMAJ5943 equivalents in the DO-214AC package. Ensure replacement parts match the 56V nominal voltage, ±5% tolerance, and 1.5W power dissipation ratings. Verify pinout compatibility and thermal performance specifications.