1812Y5000472MXTE03

Overview

The Knowles Syfer 1812Y5000472MXTE03 is a high-reliability multilayer ceramic capacitor (MLCC) designed for surface-mount technology. It features a 4.7 nF capacitance with a 500 VDC rated voltage and a ±20% tolerance. Utilizing X7R dielectric material, this Class 2 component operates within a temperature range of -55°C to +125°C. The device is housed in a standard 1812 (4532 metric) package with flexible end terminations to enhance mechanical robustness against board stress.

Feature Summary

• Flexible soft termination design improves resistance to mechanical stress during thermal cycling and PCB flexing
• X7R dielectric provides stable capacitance characteristics across the specified industrial temperature range
• High reliability construction suitable for demanding electronic applications requiring long-term stability

Applications

• Industrial control systems requiring robust power filtering
• Automotive electronics subject to thermal and mechanical vibration
• General-purpose DC link and decoupling circuits in high-voltage environments

Procurement Notes

Verify the specific suffix E03 against official manufacturer documentation to confirm exact marking or tape-and-reel specifications. Ensure compatibility with automated pick-and-place equipment due to the flexible termination style. Cross-reference the full part number with the latest Knowles Syfer datasheet to confirm current availability status and any recent product change notifications affecting form or fit.

Selection Notes

Select this component when application requirements demand high voltage handling combined with mechanical durability. The flexible termination feature distinguishes it from standard rigid-termination MLCCs, making it ideal for environments prone to board warping. Confirm that the X7R dielectric's slight capacitance variation under bias aligns with circuit performance needs compared to more stable Class 1 alternatives.

Part Context

This part belongs to the Knowles Syfer FlexiCap series, which specializes in MLCCs with compliant end electrodes. The 1812Y prefix indicates the 1812 case size and X7R dielectric type. This series addresses common failure modes in traditional MLCCs caused by solder joint cracking and thermal expansion mismatches between the ceramic body and the PCB substrate.

Replacement Considerations

Direct substitutes must match the 1812 footprint, 500V rating, 4.7nF value, and X7R dielectric. Verify if alternative manufacturers offer compatible flexible termination technologies to ensure equivalent mechanical reliability in vibration-prone applications.