1812J2000333MXTE03

Overview

The Knowles Syfer 1812J2000333MXTE03 is a surface-mount multilayer ceramic capacitor (MLCC) in the 1812 (4532 metric) case size. It features an X7R dielectric with a capacitance of 33 nF and a DC voltage rating of 200 VDC. The component offers a tolerance of ±20% and operates within a temperature range of -55°C to +125°C. It utilizes a nickel barrier termination structure with 100% tin plating. This specific variant is classified as an X2Y capacitor, integrating three-terminal filtering capabilities within the standard chip footprint.

Feature Summary

• Integrates X2Y three-terminal EMI filtering architecture within a two-terminal compatible surface-mount package
• Utilizes a nickel barrier termination system with 100% tin plating for enhanced solderability and reliability
• Employs X7R dielectric material to maintain stable capacitance characteristics across a wide industrial temperature range

Applications

• High-density PCB layouts requiring integrated EMI suppression without additional discrete filter components
• Power supply input stages for noise attenuation in compact electronic devices
• Signal line protection in sensitive digital circuits where space constraints prohibit traditional filter networks

Procurement Notes

Verify the complete part number including the E03 suffix, which denotes the specific X2Y configuration and termination style. Confirm that the design accommodates the three-terminal electrical topology rather than a standard two-terminal connection. Ensure the application voltage remains below the 200 VDC rating to prevent dielectric breakdown. Cross-reference the 1812 footprint dimensions against the layout guidelines provided in the official datasheet to ensure proper pad design.

Selection Notes

Select this component when simultaneous high-frequency noise filtering and standard capacitance are required in a minimal footprint. The X2Y architecture provides superior common-mode noise rejection compared to standard MLCCs. Consider the nickel barrier termination if lead-free soldering processes are mandated. Evaluate the 33 nF value against circuit requirements to ensure adequate decoupling or filtering performance at target frequencies.

Part Context

This component belongs to the Knowles Syfer XT series of general-purpose and high-reliability MLCCs. The XT designation typically indicates specific termination and packaging standards. The 1812 case size allows for higher capacitance values and voltage ratings compared to smaller footprints like 0805 or 1206. The integration of X2Y technology into this series enables advanced filtering solutions in standard chip formats.

Replacement Considerations

Direct substitutes must match the 1812 footprint, 200 VDC rating, 33 nF capacitance, and X2Y three-terminal functionality. Standard two-terminal X7R capacitors cannot replace this part due to the lack of integrated filtering. Verify compatibility with other X2Y variants from Knowles Syfer or equivalent manufacturers offering similar three-terminal EMI filter capacitors in the 1812 package.