1812J5000392MCTE03

Overview

The Knowles Syfer 1812J5000392MCTE03 is a feed-through multilayer ceramic capacitor designed for surface mount applications. It features a capacitance of 3900 pF with a voltage rating of 500 VDC and a tolerance of ±20%. Utilizing C0G (NP0) dielectric, it operates within a temperature range of -55°C to +125°C. The component is housed in an 1812 (4532 metric) package with a 3-pad configuration.

Feature Summary

• Integrated feed-through architecture providing electromagnetic interference filtering capabilities
• High current handling capacity rated at 50 mA for robust circuit protection
• C0G/NP0 dielectric ensures stable electrical performance across the operating temperature range

Applications

• High-frequency signal line filtering
• Power supply input/output decoupling
• Electromagnetic interference suppression in sensitive electronics

Procurement Notes

Verify the specific 3-pad footprint requirements against your PCB layout, as this feed-through design differs from standard two-terminal components. Confirm that the 50 mA current rating meets your application's peak load demands. Ensure compatibility with the 1812 package dimensions during assembly planning.

Selection Notes

Select this component when integrated EMI filtering and high-current handling are required in a compact surface-mount form factor. The C0G dielectric offers minimal capacitance variation with voltage and temperature, making it suitable for precision timing or coupling circuits where stability is critical compared to higher-K dielectrics.

Part Context

This part belongs to the Knowles Syfer feed-through capacitor series, which combines MLCC technology with a coaxial structure. Unlike standard capacitors, these devices provide superior high-frequency noise attenuation due to their low-inductance design and direct grounding path through the central conductor.

Replacement Considerations

Direct substitutes must match the 3900 pF value, 500 V rating, and 3-pad feed-through package. Standard 2-terminal MLCCs cannot replicate the EMI filtering performance. Verify if alternative feed-through models from the same manufacturer offer different current ratings or tolerance levels.