1812Y5000183MSTE03

Overview

The Knowles Syfer 1812Y5000183MSTE03 is a multilayer ceramic capacitor (MLCC) designed for surface mount applications. It features a capacitance of 18 nF with a tolerance of ±20%. The component utilizes an X7R dielectric material and is rated for a DC voltage of 50 VDC. It operates within a temperature range of -55°C to +125°C. The physical dimensions conform to the 1812 (4532 metric) package size, measuring 4.5 mm in length, 3.2 mm in width, and 2.5 mm in height. The device incorporates flexible termination technology combined with a nickel barrier structure.

Feature Summary

• Incorporates FlexiCap flexible termination technology to enhance mechanical reliability under board flex conditions.
• Features a nickel barrier layer integrated with the termination structure for improved performance.
• Classified as an X2Y capacitor configuration for specific circuit filtering requirements.
• Complies with AEC-Q200 automotive qualification standards for high-reliability applications.

Applications

• Automotive electronics requiring AEC-Q200 compliance
• Circuit boards sensitive to mechanical flex stress
• High-reliability surface mount assemblies

Procurement Notes

Verify the complete part number including the suffix MSTE03 to ensure correct identification of the nickel barrier and X2Y configuration. Confirm that the 50V rating aligns with the specific circuit voltage requirements. Check current supply status as availability may be restricted. Ensure handling procedures account for the flexible termination characteristics during assembly.

Selection Notes

Select this component when board flex resistance is critical due to its flexible termination design. The X2Y architecture provides specific noise filtering capabilities distinct from standard capacitors. Verify that the 18 nF value and X7R dielectric behavior meet the circuit's electrical specifications. Ensure the 1812 footprint matches the target PCB layout constraints.

Part Context

This component belongs to the Knowles Syfer 1812Y series, which focuses on high-reliability MLCCs. The 'Y' designation typically indicates specific termination or barrier technologies. This model represents a specialized variant within the broader capacitor portfolio, emphasizing durability and automotive-grade certification rather than general-purpose usage.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Direct replacement requires matching the X2Y configuration, nickel barrier structure, and AEC-Q200 qualification status.