1812Y2000393MSTE03

Overview

The Knowles Syfer 1812Y2000393MSTE03 is a surface-mount multilayer ceramic capacitor (MLCC) designed for high-reliability applications. It features an X7R dielectric material and offers a capacitance of 3900 pF with a voltage rating of 200 VDC. The component utilizes the FlexiCap technology, incorporating a nickel barrier to enhance mechanical robustness against cracking during thermal cycling and board flexing. Packaged in a standard 1812 (4532 metric) case size, it supports SMD/SMT termination types and operates within a temperature range of -55°C to +125°C.

Feature Summary

• FlexiCap/Nickel Barrier construction provides enhanced mechanical strength and resistance to stress-induced cracking.
• X7R dielectric ensures stable capacitance performance across a wide operating temperature range.
• AEC-Q200 qualification confirms suitability for demanding automotive electronic environments.

Applications

• Automotive electronics requiring AEC-Q200 compliance
• High-voltage DC-DC converter circuits
• General-purpose decoupling and filtering in industrial equipment

Procurement Notes

Verify the specific suffix MSTE03 to confirm the inclusion of the FlexiCap nickel barrier structure, as this distinguishes it from standard MLCC variants. Ensure compatibility with the target PCB footprint dimensions for the 1812 package. Confirm that the X7R dielectric characteristics align with the circuit's stability requirements under varying thermal conditions. Check current availability status as supply levels may fluctuate due to automotive demand.

Selection Notes

Select this component when mechanical reliability is critical alongside electrical performance. The FlexiCap design is preferred over standard terminations in applications subject to significant board flexure or thermal shock. The 200V rating provides a safety margin for mid-voltage DC lines. Consider the 3900pF value for high-frequency noise suppression where larger capacitors are impractical due to parasitic inductance.

Part Context

This part belongs to the Knowles Syfer 1812Y series, which specializes in high-reliability, mechanically robust capacitors. The 'Y' designation typically indicates the FlexiCap/nickel barrier feature set. It sits within the broader portfolio of automotive-grade ceramic components designed to meet stringent industry standards for durability and long-term stability in harsh environments.

Replacement Considerations

Direct substitutes must match the 1812 package, 3900pF capacitance, 200V rating, and X7R dielectric. Verify if the replacement also includes FlexiCap/nickel barrier technology if mechanical stress is a concern. Cross-reference AEC-Q200 certification if automotive application is required. Generic X7R MLCCs without the nickel barrier may not offer equivalent mechanical resilience.