1812Y5000183MJTE03

Overview

The Knowles Syfer 1812Y5000183MJTE03 is a high-reliability multilayer ceramic capacitor (MLCC) designed for surface-mount technology. It features an X7R dielectric material providing stable capacitance characteristics across a wide temperature range from -55°C to +125°C. The component offers a nominal capacitance of 18 nF with a tolerance of ±20% and a DC voltage rating of 500 VDC. Housed in a standard 1812 (4532 metric) case size, it utilizes FlexiCap™ flexible terminations with a nickel barrier to enhance mechanical durability against board flexing stresses.

Feature Summary

• FlexiCap flexible termination technology with nickel barrier for enhanced mechanical reliability
• X7R dielectric ensuring stable performance across extended industrial temperature ranges
• High-voltage capability rated at 500 VDC within a compact 1812 footprint

Applications

• Automotive electronics requiring AEC-Q200 qualification
• Circuit boards susceptible to mechanical flexing stress
• High-voltage signal coupling and decoupling applications

Procurement Notes

Verify the complete part number including suffixes such as MJTE03, as these indicate specific packaging, termination, and compliance attributes. Confirm RoHS and REACH status directly with the manufacturer or authorized distributors, as regulatory compliance data may vary by production batch. Ensure the procurement channel is authorized to guarantee component authenticity and traceability for high-reliability automotive or industrial deployments.

Selection Notes

Select this component when board flex resistance is critical due to its flexible terminations. The 500V rating and 18nF value suit high-voltage filtering needs. Compare against standard rigid-termination MLCCs if mechanical stress is minimal. Verify that the 1812 package dimensions fit the PCB layout constraints and that the X7R temperature coefficient meets the operational thermal requirements of the target application environment.

Part Context

This component belongs to the Knowles Syfer FlexiCap series, which specializes in robust MLCCs for demanding environments. The '1812' prefix denotes the physical case size, while 'Y' typically indicates the high-reliability product line. This series is engineered to withstand mechanical shocks and vibrations common in automotive and aerospace sectors, distinguishing it from general-purpose commercial grade capacitors.

Replacement Considerations

Direct substitutes must match the 1812 footprint, 500V rating, 18nF capacitance, and X7R dielectric. Crucially, replacements should feature flexible terminations if board flex protection is required. Verify AEC-Q200 certification if automotive use is intended. Generic equivalents without FlexiCap technology may fail under mechanical stress despite matching electrical parameters.