SCS-8-3-125T-TR

Current Sense Transformers Overview

The SCS-8-3-125T-TR is a high-frequency surface mount current sensing transformer manufactured by Signal Transformer. It features a turns ratio of 125:1 and supports a primary current rating of 15 A. The device operates within a frequency range of 50 kHz to 1 MHz. Key electrical parameters include a maximum secondary inductance of 8.7 mH, a primary DC resistance of 3.9 mOhm, and a secondary resistance of 5.2 Ohm. The component utilizes gull-wing termination for PCB mounting and measures 13 mm in length, 11 mm in width, and 7.8 mm in height.

Current Sense Transformers Feature Summary

• High-frequency operation capability suitable for switching power applications
• Compact surface mount design with gull-wing terminations
• Low primary DC resistance for efficient current sensing

Current Sense Transformers Applications

• Current sensing in switch-mode power supplies
• Overcurrent protection circuits
• Feedback control loops in power converters

Current Sense Transformers Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when ordering. Confirm that the 125:1 turns ratio and 15 A current rating align with the target circuit requirements. Ensure the operating frequency range of 50 kHz to 1 MHz is compatible with the system's switching frequency. Check RoHS compliance status if restricted substances are a concern for the assembly process.

Current Sense Transformers Selection Notes

Select this component when a compact, high-ratio current sense transformer is required for frequencies up to 1 MHz. The 125:1 ratio provides significant signal amplification for low-current detection relative to the primary side. Consider the physical dimensions of 13x11x7.8 mm for board space constraints. The low primary resistance minimizes insertion loss in the main power path compared to higher resistance alternatives.

Current Sense Transformers Part Context

This part belongs to the SCS series of current sensing transformers from Signal Transformer. The series offers various turns ratios and current ratings to suit different power management needs. The SCS-8-3-125T-TR specifically addresses applications requiring precise current monitoring in high-frequency environments using surface mount technology.

Current Sense Transformers Replacement Considerations

Direct substitutes must match the 125:1 turns ratio, 15 A rating, and 50 kHz–1 MHz frequency range. Verify footprint compatibility with the 13x11 mm outline and gull-wing pins. Compare secondary inductance and resistance values to ensure equivalent performance in the sensing circuit.