1812J2000103MJTE03

Overview

The Knowles Syfer 1812J2000103MJTE03 is a surface-mount multilayer ceramic capacitor (MLCC) designed as an X2Y component. It features a 1812 (4532 metric) package size with a rated DC voltage of 200V and a capacitance value of 10 nF. The dielectric material is X7R, providing a tolerance of ±20%. This device utilizes a unique internal structure to function as both a capacitor and a common-mode choke, offering enhanced electromagnetic interference suppression in compact designs.

Feature Summary

• Integrates X2Y architecture for simultaneous noise filtering and decoupling
• Provides common-mode choke functionality within a standard MLCC footprint
• Utilizes X7R dielectric for stable performance across operating temperatures

Applications

• High-speed data line protection
• Power supply input filtering
• EMI suppression in compact electronic modules

Procurement Notes

Verify the specific suffix configuration against official Knowles Syfer documentation to ensure correct termination and barrier materials. Confirm availability status through authorized distributors as supply conditions may vary. Cross-reference the full part number to distinguish between standard MLCC variants and the specific X2Y filtered versions offered by the manufacturer.

Selection Notes

Select this component when board space is limited but dual functionality for filtering and decoupling is required. The X2Y design reduces the need for separate discrete components. Ensure the application environment stays within the specified temperature range for X7R dielectrics. Validate that the 200V rating meets the circuit's peak voltage requirements.

Part Context

This part belongs to the Knowles Syfer X2Y family, which combines capacitor and inductor functions. It differs from standard MLCCs by its internal electrode arrangement that creates a low-impedance path for common-mode noise. The 1812 package allows for higher current handling compared to smaller footprints while maintaining a small profile suitable for modern PCB layouts.

Replacement Considerations

Direct substitutes must match the X2Y topology and 1812 dimensions. Standard MLCCs cannot replace this component due to the lack of integrated filtering capabilities. Verify equivalent parts from other manufacturers only if they explicitly specify X2Y or similar quad-electrode structures.