1812Y5000823MJTE03

Overview

The Knowles Syfer 1812Y5000823MJTE03 is a feed-through capacitor with a capacitance of 0.082 µF and a rated voltage of 500V. It utilizes X7R dielectric material and features a 1812 (4532 metric) package size. The component includes an integrated 50 mA fuse element for circuit protection. It operates within a temperature range of -55°C to +125°C and offers ±20% tolerance.

Feature Summary

• Integrated 50 mA fuse element for overcurrent protection
• Feed-through architecture combining filtering and fusing functions
• X7R ceramic dielectric for stable performance across wide temperature ranges

Applications

• Automotive electronics requiring combined EMI filtering and fuse functionality
• Power supply input stages needing compact protection solutions
• Boardflex sensitive applications due to flexible termination design

Procurement Notes

Verify the specific suffix 'E03' against official datasheets to confirm the exact fuse rating and termination configuration, as variations exist within the FlexiCap series. Ensure compatibility with high-voltage DC bus requirements given the 500V rating. Cross-reference the 50 mA fuse threshold with system fault current specifications to prevent nuisance blowing or inadequate protection during operation.

Selection Notes

Select this component when space constraints prohibit separate filter and fuse placement. The 1812 footprint allows for dense PCB layouts while maintaining high voltage isolation. Consider the thermal derating characteristics of the internal fuse element under continuous load conditions. Verify that the X7R dielectric behavior meets the application's capacitance stability requirements at operating voltages.

Part Context

This part belongs to the Knowles Syfer FlexiCap series, which specializes in multilayer ceramic capacitors with soft terminations to enhance mechanical reliability. The 1812Y series typically targets automotive and industrial markets where vibration resistance and high voltage handling are critical. The feed-through variant integrates protective elements directly into the capacitor structure.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific feed-through variant are not available in the provided documentation. Standard MLCC replacements lack the integrated fuse function and are not electrically equivalent.