FIS105NL

Current Sense Transformers Overview

The FIS105NL is a through-hole current sense transformer manufactured by Pulse Electronics. It features a 1:50 turns ratio and a primary rated current of 25 A. The component provides an inductance of 4.7 mH with a maximum secondary DC resistance of 0.5 ohms. It operates within a frequency range up to 500 kHz. Physical dimensions include a length of 15 mm, width of 12.5 mm, and height of 12 mm. The unit utilizes PC pin termination for board mounting.

Current Sense Transformers Feature Summary

• Designed for low-cost regulation in switch-mode power supplies
• Provides electrical isolation between primary and secondary circuits
• Supports high-frequency operation up to 500 kHz

Current Sense Transformers Applications

• Switch-mode power supply current sensing
• Power converter feedback loops
• Over-current protection circuits

Current Sense Transformers Procurement Notes

Verify the specific manufacturer part number against official Pulse Electronics documentation to ensure compatibility with design requirements. Confirm that the through-hole package style matches the target PCB footprint. Check datasheet specifications for thermal limits and insulation ratings before integration into final assemblies.

Current Sense Transformers Selection Notes

Select this component when a 1:50 turns ratio and 25 A primary current rating are required for current sensing applications. Ensure the operating frequency does not exceed 500 kHz. Verify that the physical dimensions fit the available board space and that the through-hole mounting method aligns with the manufacturing process.

Current Sense Transformers Part Context

This component belongs to the FIS series of current sense transformers from Pulse Electronics. These devices are engineered for use in power electronics where accurate current monitoring is necessary. The series offers various configurations tailored for different current levels and inductance requirements in switching regulator designs.

Current Sense Transformers Replacement Considerations

Consult official distributor databases or manufacturer cross-reference tools for verified substitute part numbers. Do not assume interchangeability based on similar parameters alone. Validate any alternative components against the original datasheet specifications for electrical and mechanical compatibility.