A-40J

Overview

The Triad Magnetics A-40J is an impedance match audio transformer designed for signal coupling applications. It features a primary impedance of 15,000 ohms and a secondary impedance of 115,000 ohms center-tapped, providing a turns ratio of 1:2.76. The unit has a power rating of 10 mW with a maximum DC resistance of 4.02 kOhms and a primary resistance of 1.54 kOhms. It utilizes radial pin terminals for connection.

Feature Summary

• Provides precise impedance matching between circuit stages
• Supports data and voice signal coupling functions
• Features a center-tapped secondary winding configuration

Applications

• Data voice coupling in communication systems
• Impedance matching in audio signal processing circuits
• Signal isolation in electronic equipment

Procurement Notes

Verify the specific datasheet version to confirm compliance details such as RoHS status. Ensure the application voltage does not exceed the 10 mW power rating. Confirm that the radial pin terminal spacing matches the target PCB layout requirements before finalizing procurement.

Selection Notes

Select this component when a 15k to 115kCT impedance transformation is required. It is suitable for low-power audio or data signals where minimal insertion loss is critical. Consider the physical dimensions and mounting style if space constraints exist within the enclosure design.

Part Context

This part belongs to the Triad Magnetics audio and signal transformer family. These components are engineered for reliable performance in telecommunications and consumer electronics. The A-40J specifically addresses needs for balanced line interfacing and impedance bridging in professional audio environments.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.