1812Y2000184MSTE03

Overview

The Knowles Syfer 1812Y2000184MSTE03 is a surface-mount feed-through capacitor designed for high-frequency noise suppression. It features an X7R dielectric with a capacitance of 0.18 µF and a voltage rating of 200V DC. The component operates within a temperature range of -55°C to +125°C and carries AEC-Q200 qualification for automotive reliability. Its physical dimensions are 1812 (4532 metric), utilizing FlexiCap technology with a nickel barrier for enhanced mechanical stability.

Feature Summary

• Integrated feed-through architecture providing effective electromagnetic interference filtering in a compact footprint
• FlexiCap termination system with nickel barrier to improve resistance to board flex stress
• AEC-Q200 qualified construction ensuring suitability for demanding automotive electronic environments

Applications

• Automotive infotainment and display signal line filtering
• Power supply input/output noise suppression in vehicle electronics
• High-speed data interface protection against electromagnetic interference

Procurement Notes

Verify the specific suffix MSTE03 to confirm the inclusion of the nickel barrier and FlexiCap termination style, as these affect mechanical performance. Ensure the reel packaging quantity aligns with production requirements. Confirm RoHS compliance status through official documentation before integration into regulated assemblies.

Selection Notes

Select this component when board space is limited but significant current handling and low impedance filtering are required. The 1812 package offers higher current capacity compared to smaller footprints. Verify that the 200V DC rating exceeds the maximum circuit voltage including transients. Consider the thermal environment to ensure operation remains within the specified -55°C to +125°C range.

Part Context

This part belongs to the Knowles Syfer 1812Y series of feed-through capacitors. These components combine the functions of a capacitor and an inductor in a single SMD package. They are engineered to provide superior high-frequency attenuation compared to standard MLCCs, making them ideal for applications requiring robust EMI/RFI suppression without increasing board size.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material. Any replacement must match the 1812 footprint, 200V rating, 0.18 µF capacitance, and feed-through topology. Verify electrical characteristics and mechanical compatibility with the original design specifications.