1812J1000274MJTE03

Overview

The Knowles Syfer 1812J1000274MJTE03 is a high-reliability X2Y multilayer ceramic capacitor with a 270 nF capacitance and 100 VDC rating. It utilizes an X7R dielectric with ±20% tolerance in an 1812 (4532 metric) surface-mount package. The component features nickel barrier terminations with 100% tin plating, ensuring compatibility with standard soldering processes. Designed for demanding environments, it operates reliably between -55°C and +125°C. This feed-through device integrates filtering capabilities directly into the component structure.

Feature Summary

• X2Y architecture provides simultaneous common-mode and differential-mode noise suppression within a single compact package.
• Feed-through design enables low-inductance performance by minimizing parasitic effects associated with traditional mounting methods.
• Nickel barrier termination system offers robust mechanical strength and reliable solderability for automated assembly.

Applications

• High-frequency noise filtering in sensitive analog and digital circuits
• Power supply input and output decoupling for EMI reduction
• Signal line protection in communication equipment

Procurement Notes

Verify the specific suffix 'E03' to confirm the presence of nickel barrier terminations and X2Y configuration, as standard variants may differ. Confirm RoHS compliance status through the official datasheet before integration. Ensure PCB footprint matches the 1812 package dimensions precisely to accommodate the feed-through terminal structure. Check for any recent manufacturing updates that might affect material composition or testing standards.

Selection Notes

Select this component when space constraints prevent the use of discrete filter networks requiring multiple passive elements. The X2Y topology simplifies layout by combining three terminals into one body, reducing board area significantly compared to separate capacitors. Consider the 100V rating relative to peak circuit voltages to ensure adequate margin. Evaluate the thermal environment to confirm operation within the specified -55°C to +125°C range without derating requirements.

Part Context

This part belongs to the Knowles Syfer High Reliability MLCC series, specifically engineered for applications requiring superior electromagnetic interference suppression. The X2Y designation indicates a unique internal electrode arrangement that differs from standard two-terminal capacitors. It represents a specialized solution within the broader ceramic capacitor portfolio, targeting advanced electronics where signal integrity and noise immunity are critical design parameters.

Replacement Considerations

Direct substitutes must match the X2Y topology and 1812 package. Standard two-terminal MLCCs cannot replicate the combined filtering function. Verify equivalent capacitance, voltage rating, and termination materials. Consult manufacturer cross-reference guides for confirmed compatible parts with identical electrical and mechanical specifications.