CST306-1T-B

Overview

The Triad Magnetics CST306-1T-B is a through-hole current sense transformer designed for non-invasive primary current monitoring. It features a solid core construction with a 50:1 turns ratio and an inductance of 3.5 mH. The device supports a primary current rating of 35 A and operates within a frequency range of 20 kHz to 200 kHz. Secondary resistance is specified at 340 mOhms. Physical dimensions are 17.53 mm in length, 9.78 mm in width, and 23.24 mm in height.

Feature Summary

• Non-invasive solid core design for direct wire insertion
• Radial through-hole mounting configuration
• High-frequency operation capability up to 200 kHz

Applications

• Switch-mode power supply current sensing
• Inverter and motor drive protection circuits
• Industrial power monitoring systems

Procurement Notes

Verify the specific suffix against manufacturer documentation to confirm exact electrical tolerances and packaging variations. Ensure the selected variant matches the required insulation ratings and thermal performance for the intended enclosure environment. Cross-reference datasheet revision dates to guarantee compatibility with existing design specifications.

Selection Notes

Select this component when a compact, high-current solution is required for frequencies between 20 kHz and 200 kHz. The 50:1 ratio provides a balanced output for standard sensing amplifiers. Evaluate the 35 A primary rating against peak load conditions to ensure adequate headroom without saturation.

Part Context

This part belongs to the CST series of current sense transformers from Triad Magnetics. These components are engineered for robust performance in demanding power electronics applications. The series offers various ratios and current ratings to accommodate diverse circuit requirements while maintaining consistent physical form factors for board layout flexibility.

Replacement Considerations

Direct substitutes include the CST306-1A and CST306-1T variants from the same manufacturer. Verify that alternative models maintain identical pin configurations and dimensional constraints to ensure mechanical fit without PCB redesign.

FAQ

What is the maximum primary current rating?

The CST306-1T-B supports a continuous primary current rating of 35 A.

Is this transformer invasive or non-invasive?

It is a non-invasive type featuring a solid core that allows the primary conductor to pass directly through the center.