1206J0250393MXTE01

Overview

The Knowles Syfer 1206J0250393MXTE01 is a three-terminal EMI filter capacitor in a 1206 (3216 metric) surface-mount package. It features an X7R dielectric with a capacitance of 39 nF and a DC voltage rating of 25 VDC. The component offers a tolerance of ±20% and operates within a temperature range of -55°C to +125°C. Dimensions are 4.5 mm length, 1.6 mm width, and 1.1 mm height. It utilizes nickel barrier and 100% tin terminations.

Feature Summary

• Three-terminal architecture for enhanced electromagnetic interference filtering
• Flexible termination technology designed to accommodate board bending
• High reliability under thermal cycling conditions

Applications

• Electromagnetic interference suppression in sensitive circuits
• Power supply input filtering
• Signal line protection in high-reliability systems

Procurement Notes

Verify the specific termination material composition and current rating requirements against the official datasheet before integration. Confirm that the three-terminal footprint matches the PCB layout design. Ensure the operating voltage does not exceed the 25 VDC rating under all transient conditions. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when superior EMI attenuation is required compared to standard two-terminal capacitors. The flexible termination feature makes it suitable for applications involving mechanical stress or board flexing. Consider the X7R dielectric characteristics for stability across the specified temperature range. Evaluate the physical dimensions to ensure compatibility with the available board space.

Part Context

This component belongs to the Knowles Syfer MLCC series utilizing FlexiCap™ technology. The series is engineered for high reliability and mechanical robustness. The three-terminal design distinguishes it from standard capacitors by providing improved high-frequency noise suppression capabilities through reduced parasitic inductance.

Replacement Considerations

Direct substitutes must match the 1206 footprint, 39 nF capacitance, 25 VDC rating, and three-terminal configuration. Verify equivalent dielectric type and temperature range. Consult official substitution guides for compatible parts with identical electrical and mechanical specifications.