1812Y1000393MJTE03

Overview

The Knowles Syfer 1812Y1000393MJTE03 is a surface-mount multilayer ceramic capacitor (MLCC) designed for high-reliability applications. It features an X7R dielectric material and operates within a temperature range of -55°C to +125°C. The component provides a capacitance of 39 nF with a tolerance of ±20% and a DC voltage rating of 100 V. Housed in a standard 1812 (4532 metric) package, it utilizes a nickel barrier electrode structure with 100% tin terminations. This specific variant belongs to the FlexiCap series, incorporating X2Y architecture for enhanced electromagnetic interference suppression.

Feature Summary

• X2Y three-terminal architecture providing integrated common-mode noise filtering capabilities
• FlexiCap flexible termination design to mitigate mechanical stress during thermal cycling
• Nickel barrier electrode construction ensuring robust solderability and reliability

Applications

• High-frequency signal line decoupling in sensitive analog circuits
• Common-mode noise suppression in data communication interfaces
• Power supply input filtering for mixed-signal integrated circuits

Procurement Notes

Verify the complete part number including the suffix to ensure correct termination and packaging specifications. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Check current availability as distribution may vary by region. Ensure storage conditions align with moisture sensitivity level requirements before reflow soldering.

Selection Notes

Select this component when simultaneous capacitance and EMI filtering are required in a single footprint. The X2Y topology reduces board space compared to discrete filter components. Verify that the 100V rating exceeds peak circuit voltages. Consider the 1812 package dimensions against available PCB real estate constraints.

Part Context

This capacitor belongs to the Knowles Syfer FlexiCap family, which specializes in reliable MLCCs with flexible terminations. The X2Y designation indicates a unique internal connection scheme where one terminal acts as a common ground for two independent capacitive paths. This configuration distinguishes it from standard two-terminal MLCCs by offering superior high-frequency performance.

FAQ

What is the internal structure of the X2Y designation?

The X2Y structure integrates two capacitors sharing a common center terminal, effectively creating a three-terminal device that functions as both a capacitor and a common-mode choke.

How does the FlexiCap termination benefit the component?

The flexible termination absorbs mechanical stress caused by coefficient of thermal expansion mismatches between the PCB and the ceramic body, reducing the risk of crack formation.