1206J1000122MJTE03

Overview

The Knowles Syfer 1206J1000122MJTE03 is a feed-through multilayer ceramic capacitor designed for surface mount technology. It features a capacitance of 1200 pF with a tolerance of ±20% and a DC voltage rating of 100 VDC. The component utilizes X7R dielectric material, ensuring stability across an operating temperature range from -55°C to +125°C. Housed in a standard 1206 (3216 metric) package, it integrates a built-in fuse element rated at 50 mA to provide overcurrent protection within the circuit.

Feature Summary

• Integrates a built-in 50 mA fuse element for direct overcurrent protection within the capacitor structure.
• Utilizes X7R dielectric material to maintain capacitance stability across a wide industrial temperature range.
• Designed as a surface-mount feed-through device to minimize parasitic inductance in high-frequency applications.

Applications

• High-reliability power supply input filtering
• Automotive electronics requiring integrated surge protection
• Telecommunications equipment signal conditioning

Procurement Notes

Verify the specific suffix 'MJTE03' against official manufacturer documentation to confirm the 50 mA fuse rating and feed-through configuration. Standard MLCC part numbers may lack this protective feature. Ensure the selected variant matches the required current handling capacity for the target application circuit.

Selection Notes

Select this component when space-constrained designs require both decoupling and overcurrent protection in a single footprint. The 1206 package allows for standard reflow soldering processes. Confirm that the 100V DC rating exceeds the maximum operating voltage of the system to ensure long-term reliability under thermal stress conditions.

Part Context

This component belongs to the Knowles Syfer feed-through capacitor series, which combines passive filtering with active protection mechanisms. Unlike standard capacitors, these devices incorporate a fusible link that opens the circuit during excessive current events, preventing damage to downstream components while maintaining compact board layouts.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source data. Verify compatibility with alternative feed-through capacitors by matching the 1206 footprint, 100V rating, 1200pF capacitance, and 50mA fuse threshold.