1812Y0500393MSTE03

Overview

The Knowles Syfer 1812Y0500393MSTE03 is a surface-mount X7R dielectric feed-through capacitor with a capacitance of 0.039 µF and a DC voltage rating of 50 VDC. It features a 1812 (4532 metric) case size, ±20% tolerance, and AEC-Q200 automotive qualification. The component utilizes FlexiCap technology with a nickel barrier for enhanced reliability.

Feature Summary

• Integrated feed-through architecture providing three connection pads for superior electromagnetic interference suppression
• FlexiCap construction with nickel barrier to improve mechanical robustness against board flexing
• AEC-Q200 qualified for high-reliability automotive electronic applications

Applications

• Automotive power supply filtering circuits
• High-frequency noise suppression in vehicle electronics
• EMI/RFI mitigation in sensitive signal lines

Procurement Notes

Verify the specific suffix MSTE03 to confirm the inclusion of the nickel barrier and FlexiCap structure. Ensure the design accommodates the three-pad footprint required for the feed-through configuration rather than standard two-terminal mounting.

Selection Notes

Select this component when EMI suppression and mechanical durability are critical. The feed-through design offers better performance than standard MLCCs in noisy environments. Confirm that the 50V rating and 0.039 µF value meet the circuit requirements.

Part Context

This part belongs to the Knowles Syfer FlexiCap series, which specializes in high-reliability capacitors for harsh environments. The 1812Y prefix indicates an X7R dielectric within the 1812 package family, designed for stable performance across wide temperature ranges.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.