1812J2000124MJTE03

Overview

The Knowles Syfer 1812J2000124MJTE03 is a feed-through multilayer ceramic capacitor designed for surface mount applications. It features a capacitance of 0.12 µF with a voltage rating of 200 VDC and a tolerance of ±5%. The component utilizes C0G (NP0) dielectric material, ensuring stable performance across an operating temperature range of -55°C to +125°C. Housed in a standard 1812 (4532 metric) package, it includes an integrated 50 mA fuse element for overcurrent protection.

Feature Summary

• Integrates a 50 mA fuse element within the capacitor structure for combined filtering and circuit protection capabilities.
• Utilizes C0G (NP0) dielectric technology to maintain capacitance stability under varying thermal conditions.
• Features a high-voltage 200 VDC rating suitable for demanding power supply environments.

Applications

• High-frequency noise suppression in DC-DC converter output stages
• Input filtering for sensitive analog-to-digital converter circuits
• Power line conditioning in industrial control systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm the presence of the integrated fuse element and terminal configuration. Ensure that the selected variant matches the required 50 mA current rating and 200 VDC withstand voltage for the target application environment. Cross-reference the package dimensions with the PCB footprint library to guarantee mechanical compatibility during assembly.

Selection Notes

Select this component when simultaneous EMI filtering and overcurrent protection are required within a single surface-mount footprint. The C0G dielectric ensures minimal capacitance drift, making it ideal for precision timing or coupling applications where signal integrity is critical. Evaluate the 50 mA fuse threshold against the maximum expected load current to prevent unintended circuit interruption during normal operation.

Part Context

This part belongs to the Knowles Syfer feed-through capacitor series, which combines passive filtering with active protection mechanisms. Unlike standard MLCCs, these components integrate a fusible link, providing enhanced safety in high-reliability applications. The 1812 form factor allows for compact board layouts while maintaining robust electrical performance standards.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with alternative feed-through capacitors by matching the 0.12 µF capacitance, 200 VDC rating, 50 mA fuse threshold, and 1812 package dimensions.