CST206-3T-B

Overview

The Triad Magnetics CST206-3T-B is a through-hole current sense transformer designed for switching power supply applications. It features a non-invasive solid core construction with a rated primary current of 70 A RMS. The device operates within a frequency range of 20 kHz to 200 kHz and provides a turns ratio of 300:1. Key electrical specifications include a minimum inductance of 130 mH, a maximum DC resistance of 12.4 Ohms, and an ET value of 6000 VµS at 20 kHz. The component utilizes radial PC pin termination and is encapsulated in a toroidal package.

Feature Summary

• Non-invasive solid core design for reliable current detection
• Encapsulated toroidal construction for environmental protection
• Radial through-hole mounting with PC pin termination

Applications

• Switching power supply current sensing
• Power management circuit monitoring
• Over-current protection systems

Procurement Notes

Verify the specific suffix 'B' against the manufacturer's official documentation to confirm exact packaging or variant details. Ensure the required operating temperature range aligns with the UL rated 130°C material specifications. Confirm that the physical dimensions fit the target PCB layout before finalizing procurement orders.

Selection Notes

Select this component when a 70 A RMS rating and 300:1 turns ratio are required for high-frequency switching applications. The 130 mH inductance supports stable operation between 20 kHz and 200 kHz. Consider the 12.4 Ohm maximum secondary resistance for burden resistor calculations. The through-hole format is suitable for robust mechanical connections in industrial environments.

Part Context

This part belongs to the CST206 series of current sense transformers from Triad Magnetics. The series is engineered for detecting current passing through conductors in switching power supplies. The CST206-3T-B specifically denotes the 70 A variant with through-hole termination and encapsulated toroidal construction.

Replacement Considerations

Compatible substitutes within the same series include CST206-3A-B and CST206-3T. Verify that alternative part numbers match the 70 A rating, 130 mH inductance, and 300:1 turns ratio to ensure functional equivalence in the circuit design.