1812Y1000274MSTE03

Overview

The Knowles Syfer 1812Y1000274MSTE03 is a surface-mount multilayer ceramic capacitor (MLCC) designed for high-reliability applications. It features a 1812 (4532 metric) case size with a capacitance of 270 nF and a DC voltage rating of 100 VDC. The component utilizes X7R dielectric material, providing a tolerance of ±20%. It incorporates FlexiCap technology with a nickel barrier and tin termination to enhance mechanical robustness against cracking. This part is AEC-Q200 qualified, ensuring suitability for automotive electronics environments.

Feature Summary

• AEC-Q200 qualified for automotive reliability standards
• FlexiCap structure with nickel barrier for enhanced mechanical strength
• X7R dielectric material for stable performance across temperature ranges

Applications

• Automotive infotainment systems
• Engine control unit filtering
• General automotive electronics requiring high reliability

Procurement Notes

Verify the specific suffix MSTE03 to confirm FlexiCap and AEC-Q200 compliance, as standard variants may differ. Ensure the ordering quantity aligns with the factory reel pack size of 500 units. Confirm RoHS status and environmental declarations prior to final procurement to meet regulatory requirements for the target application.

Selection Notes

Select this component when mechanical shock resistance is critical in an automotive setting. The FlexiCap design mitigates stress-induced cracking common in rigid terminations. Choose the 1812 package for higher capacitance density compared to smaller footprints while maintaining compatibility with standard SMT processes. Verify that the X7R characteristics meet the circuit's stability requirements.

Part Context

This part belongs to the Knowles Syfer 1812Y series, which focuses on automotive-grade MLCCs. The 'Y' indicates the 1812 case size, while the suffix denotes specific termination and qualification features. It complements other Syfer components by offering specialized mechanical protection for harsh environments where standard capacitors might fail due to board flex or vibration.

Replacement Considerations

Direct substitutes must match the 1812 footprint, 100V rating, 270nF value, and X7R dielectric. Crucially, replacements should also offer AEC-Q200 qualification and FlexiCap-style mechanical reinforcement if the original design relies on these specific durability features. Generic X7R capacitors without these qualifications are not suitable direct replacements.