CST306-1A

Overview

The Triad Magnetics CST306-1A is a through-hole current sense transformer designed for high-frequency applications. It features an encapsulated toroidal core with a 50:1 turns ratio and a primary inductance of 3.5 mH. The device supports a maximum primary current of 35 A and operates within a frequency range of 20 kHz to 200 kHz. Key electrical specifications include a secondary resistance of 340 mOhms and a saturation voltage-time product of 500 Vµs. The component utilizes radial termination for board mounting and measures 17.53 mm in length, 9.78 mm in width, and 23.24 mm in height.

Feature Summary

• Encapsulated toroidal construction ensures reliable operation over the specified frequency range.
• Designed specifically for detecting current passing through conductors in switching power supply environments.
• Constructed using UL rated materials capable of operating at temperatures up to 130 ºC.

Applications

• Switching power supply current sensing
• Industrial control system load monitoring
• High-current load detection in industrial settings

Procurement Notes

Verify that the specific order matches the Triad Magnetics manufacturer number CST306-1A. Confirm the requirement for through-hole radial termination and the 50:1 turns ratio against the circuit design. Ensure the application environment stays within the 20 kHz to 200 kHz operational frequency range and does not exceed the 35 A primary current rating. Check for any specific packaging or handling requirements associated with the encapsulated toroidal form factor.

Selection Notes

Select this component when a high-frequency current sense transformer is required for switching power supplies. The 3.5 mH primary inductance and 340 mOhm secondary resistance are critical for accurate signal conditioning. The 50:1 ratio provides appropriate scaling for downstream sensing circuits. Consider the physical dimensions and through-hole mounting style if space constraints or PCB layout preferences dictate these parameters. The 130 ºC thermal rating supports robust industrial applications.

Part Context

This part belongs to the Triad Magnetics current sense transformer series. These components are engineered to detect current flow through conductors efficiently. The CST306-1A represents a standard encapsulated toroidal design within this lineup, offering consistent performance for general-purpose current monitoring tasks in electronic systems requiring isolation and accuracy.

Replacement Considerations

Public documentation references the CST306-2A as a related model within the same product family. Verify compatibility before substitution, as variations may exist in electrical characteristics or physical dimensions between specific suffixes in the CST306 series.

FAQ

What is the maximum operating frequency for the CST306-1A?

The CST306-1A operates effectively within a frequency range of 20 kHz to 200 kHz.

Is the CST306-1A suitable for high-temperature environments?

Yes, the transformer is constructed of UL rated materials that support operation at temperatures up to 130 ºC.