CST206-3A

Overview

The Triad Magnetics CST206-3A is a board-mount current sense transformer designed for through-hole installation. It features a non-invasive solid core construction with a turns ratio of 300:1 and a rated primary current of 70 A. The device operates within a frequency range of 20 kHz to 200 kHz, providing accurate current sensing capabilities. Key electrical specifications include a maximum DC resistance of 12.4 ohms and an inductance of 130 mH. The component measures 27.3 mm in length, 10.16 mm in width, and 31.11 mm in height, utilizing radial PC pin termination.

Feature Summary

• Non-invasive solid core design for direct conductor insertion
• High reliability operation using UL rated 130 °C materials
• Radial through-hole mounting for secure PCB integration

Applications

• Switch-mode power supply current monitoring
• Inverter and motor drive control circuits
• Industrial power conversion systems

Procurement Notes

Verify the specific suffix against official Triad Magnetics documentation to confirm exact electrical tolerances and material certifications. Ensure the procurement channel provides valid RoHS compliance statements and original manufacturer warranty terms. Cross-reference the DigiKey part number 237-1100-ND for accurate datasheet alignment during sourcing.

Selection Notes

Select this component when a 70 A primary rating and 300:1 transformation ratio are required for high-frequency applications between 20 kHz and 200 kHz. The solid core architecture necessitates that the primary conductor passes through the center hole rather than connecting electrically. Verify that the physical dimensions fit the available board space and that the through-hole pitch matches the target PCB layout.

Part Context

The CST206-3A belongs to the CST series of current sense transformers manufactured by Triad Magnetics. This series is engineered for reliable performance in demanding electronic environments. The model utilizes a solid core structure, distinguishing it from split-core alternatives, and is optimized for precise current measurement in power electronics where isolation and accuracy are critical.

Replacement Considerations

The CST206K is identified as a related kit product within the same series. No direct single-unit substitute part numbers are confirmed in the provided public documentation.