1812Y5000223MSTE03

Overview

The Knowles Syfer 1812Y5000223MSTE03 is a surface-mount feed-through capacitor featuring an X7R dielectric and a 500 VDC voltage rating. It provides a capacitance of 0.022 µF with a 20% tolerance. The component utilizes a 1812 (4532 metric) package size and incorporates flexible end terminations to enhance mechanical reliability. It supports a continuous current of 50 mA and operates within a temperature range of -55°C to +125°C.

Feature Summary

• Integrated feed-through architecture for high-frequency noise suppression
• Flexible soft terminations designed to reduce stress on solder joints
• X7R ceramic dielectric ensuring stable performance across wide temperature variations

Applications

• High-reliability industrial electronics requiring robust EMI filtering
• Automotive systems adhering to AEC-Q200 standards
• Power supply input stages for noise attenuation

Procurement Notes

Verify the specific suffix MSTE03 during procurement, as it denotes the FlexiCap series with nickel barrier and X2Y configuration. Confirm that the required 50 mA current rating aligns with circuit demands. Ensure the 1812 footprint matches the PCB layout constraints. Cross-reference the manufacturer datasheet for precise dimensional tolerances before finalizing the bill of materials.

Selection Notes

Select this component when both high-voltage handling and superior mechanical durability are required. The flexible termination technology makes it suitable for applications subject to board flexing or thermal cycling. Compare against standard MLCCs if EMI suppression is a primary design goal. Ensure the operating environment stays within the specified -55°C to +125°C range for optimal X7R performance.

Part Context

This part belongs to the Knowles Syfer FlexiCap series, which specializes in multilayer ceramic capacitors with enhanced mechanical strength. The series targets industries demanding high reliability under physical stress. The 1812Y prefix indicates a 500V rated device within the 1812 case size family, distinguishing it from lower voltage variants.

Replacement Considerations

Direct substitutes must match the 1812 footprint, 500V rating, 0.022µF value, and feed-through topology. Verify that alternative components also feature flexible terminations if mechanical resilience is critical. Standard MLCCs without feed-through capabilities will not provide equivalent EMI suppression.