1812J2000392MXTE03

Overview

The Knowles Syfer 1812J2000392MXTE03 is a surface-mount multilayer ceramic capacitor (MLCC) featuring an X7R dielectric and a capacitance of 3.9 nF with ±20% tolerance. It operates at a DC voltage rating of 200V within the standard 1812 (4532 metric) package dimensions. The component utilizes a nickel barrier electrode structure terminated with 100% tin, ensuring compatibility with standard reflow soldering processes. Designed for high-reliability applications, it maintains stable performance across a wide operating temperature range from -55°C to +125°C.

Feature Summary

• X2Y circuit topology providing integrated common-mode noise suppression
• Nickel barrier internal electrodes for enhanced reliability
• 100% tin external terminations for lead-free soldering compatibility

Applications

• High-frequency noise filtering in power supply circuits
• Common-mode interference suppression in signal lines
• General-purpose decoupling in high-reliability electronic systems

Procurement Notes

Verify the specific E03 suffix against official manufacturer documentation to confirm exact termination and material specifications. Ensure the selected variant matches the required X2Y functionality and nickel barrier construction. Cross-reference the full part number with current datasheets to validate compliance with RoHS3 standards and intended application parameters before procurement.

Selection Notes

Select this component when integrated X2Y noise filtering is required in a compact 1812 footprint. The 200V rating and X7R dielectric offer a balance of capacitance density and voltage handling. Verify that the ±20% tolerance meets the circuit requirements and that the nickel barrier construction aligns with the target reliability standards.

Part Context

This component belongs to the Knowles Syfer XT series of high-reliability MLCCs. The series is engineered for demanding environments, utilizing advanced materials and structures to ensure long-term stability. The 1812J prefix indicates the 1812 case size and general product line classification within the manufacturer's portfolio.

Replacement Considerations

Direct substitutes must match the 1812J2000392MXTE03 part number exactly to preserve X2Y functionality and termination specifications. Generic X7R capacitors lack the integrated filtering topology and may not provide equivalent noise suppression performance.