FK2125T256AL-T

Overview

The FK2125T256AL-T is a multilayer EMI suppression filter manufactured by Taiyo Yuden in an 0805 (2125 metric) surface-mount package. It functions as a T-type LC network with a cutoff frequency of 25 MHz and a rated voltage of 10 VDC. The component supports a maximum current of 100 mA and exhibits a resistance of 2 Ohms. Designed for data line protection, it provides attenuation of at least 20 dB. The device operates within a temperature range of -40°C to +85°C and complies with RoHS standards.

Feature Summary

• Integrates a T-type LC network structure for effective common-mode noise suppression
• Provides high attenuation performance exceeding 20 dB at the specified cutoff frequency
• Utilizes a compact 0805 surface-mount footprint suitable for space-constrained PCB layouts

Applications

• Data line EMI/RFI filtering in portable electronic devices
• Noise suppression for USB and high-speed digital interfaces
• Signal integrity enhancement in mobile communication modules

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm lot traceability and RoHS compliance documentation prior to integration. Ensure storage conditions maintain moisture sensitivity levels according to JEDC standards. Validate pin compatibility and soldering profiles against assembly specifications to prevent thermal damage during reflow processes.

Selection Notes

Select this component when designing circuits requiring compact EMI filtering for low-voltage data lines. The 25 MHz cutoff frequency suits applications where signal bandwidth exceeds typical power line frequencies but requires significant noise reduction. Consider the 100 mA current rating to ensure adequate headroom for peak operational loads without excessive insertion loss or thermal rise.

Part Context

This part belongs to the FK2125T series of multilayer EMI filters from Taiyo Yuden. These components are engineered for high-density electronics, offering superior noise suppression compared to single-component solutions. The series utilizes proprietary ceramic materials to achieve stable electrical characteristics across varying environmental conditions and frequencies.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Engineers should consult official Taiyo Yuden documentation or authorized distributor databases for verified cross-references based on specific electrical requirements and form factor constraints.