1812Y5000123MXTE03

Overview

The Knowles Syfer 1812Y5000123MXTE03 is a feed-through multilayer ceramic capacitor (MLCC) designed for surface mount technology. It features a capacitance of 0.012 µF with a ±20% tolerance and an X7R dielectric material. The component supports a DC voltage rating of 500V and includes a built-in 50 mA fuse characteristic for overcurrent protection. It operates within a temperature range of -55°C to +125°C and utilizes flexible terminals to enhance mechanical reliability.

Feature Summary

• Integrates a 50 mA fuse element directly into the capacitor structure for circuit protection
• Utilizes flexible terminal construction to improve resistance to board flex stress
• Provides high-voltage insulation capabilities suitable for demanding electronic environments

Applications

• Automotive electronics requiring AEC-Q200 compliance
• Circuits sensitive to mechanical board flexing
• High-voltage signal filtering applications

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm the presence of the integrated fuse and terminal type. Ensure compatibility with the target PCB footprint, as feed-through components require distinct pad layouts compared to standard MLCCs. Confirm RoHS and REACH compliance status through manufacturer documentation prior to integration.

Selection Notes

Select this component when simultaneous high-voltage decoupling and overcurrent protection are required in a single package. The flexible terminal design makes it suitable for applications subject to mechanical stress. Verify that the 50 mA fuse rating aligns with the circuit's operational current limits to prevent unintended interruption during normal operation.

Part Context

This part belongs to the Knowles Syfer FlexiCap series, which specializes in capacitors with soft or flexible terminations. The 1812Y prefix indicates a 1812 case size with a 500V rating. The MXTE03 suffix denotes specific terminal and packaging characteristics unique to this feed-through variant within the broader Syfer portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific model were not identified in the provided source data.