56T300C

Overview

The Murata Power Solutions 56T300C is a through-hole current sensing transformer designed for high-frequency applications. It features a primary current rating of 10 A and a secondary current output of 1 A, utilizing a 1:300CT turns ratio. The component operates within a frequency range of 20 kHz to 200 kHz. Electrical specifications include a primary DC resistance of 5.73 Ω, a secondary DC resistance of 8.59 Ω, and an inductance value of 160 mH (with some sources citing 180 mH). The device supports a wide operating temperature range from -40°C to +85°C and measures 16.79 mm in length, 20.19 mm in depth, and 8.89 mm in width.

Feature Summary

• Provides accurate current sensing via a 1:300CT transformation ratio for signal isolation.
• Engineered for stable operation across a broad frequency spectrum from 20 kHz to 200 kHz.
• Supports high primary current handling up to 10 A with low impedance characteristics.

Applications

• Current monitoring in switch-mode power supplies
• Overcurrent protection circuits in industrial equipment
• Power factor correction systems

Procurement Notes

Verify the specific datasheet version prior to ordering, as documentation references vary between 160 mH and 180 mH inductance values. Confirm that the through-hole wire termination style matches the target PCB layout requirements. Ensure the operating environment remains within the specified -40°C to +85°C thermal limits to maintain performance integrity.

Selection Notes

Select this component when a robust, high-current sensing solution is required for frequencies above 20 kHz. The 10 A primary rating makes it suitable for main power line monitoring rather than low-signal applications. Consider the physical dimensions and leaded construction if surface-mount alternatives are unsuitable for the mechanical constraints of the design.

Part Context

This part belongs to the 5600 series of current transformers from Murata Power Solutions. The series focuses on board-mount solutions for power electronics, offering various ratios and current ratings. The 56T300C specifically addresses the need for isolating high-current signals in medium-to-high frequency switching environments.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Cross-referencing requires matching the 1:300CT ratio, 10 A primary rating, and 20-200 kHz frequency range with alternative manufacturers' current sensing transformers.

FAQ

What is the turns ratio of the 56T300C?

The 56T300C has a turns ratio of 1:300CT.

What is the maximum primary current rating?

The maximum primary current rating is 10 A.