0805J1000122MJTE07

Overview

The Knowles Syfer 0805J1000122MJTE07 is a surface-mount feed-through capacitor designed for high-frequency noise suppression. It features a capacitance of 1200 pF with a tolerance of ±20%. The component is rated for a DC voltage of 100 V and supports a continuous current of 1 A. Constructed in an 0805 (2012 metric) package, it utilizes a three-pad configuration to integrate the signal path directly through the dielectric. This architecture minimizes parasitic inductance, making it suitable for applications requiring efficient EMI filtering in compact spaces.

Feature Summary

• Integrates signal conduction directly through the ceramic body via a central terminal structure
• Provides effective electromagnetic interference attenuation by combining capacitance with low-impedance current paths
• Utilizes a three-pad surface mount footprint to reduce parasitic inductance compared to standard two-terminal designs

Applications

• High-speed data line filtering
• RF circuit noise suppression
• Power distribution network decoupling

Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging when ordering. Confirm the 1 A current rating aligns with the application's peak load requirements. Ensure the PCB layout accommodates the distinct three-pad geometry required for proper electrical connection and thermal performance. Cross-reference the datasheet for precise soldering profile recommendations to maintain component integrity during assembly.

Selection Notes

Select this component when space constraints preclude the use of larger discrete filters but higher current handling than standard MLCCs is required. The feed-through design offers superior high-frequency performance over conventional capacitors due to reduced loop inductance. Evaluate the trade-off between the 1 A current capacity and the physical size against alternative filter topologies. Ensure the 100 V rating exceeds the maximum operating voltage including transients.

Part Context

This part belongs to the Knowles Syfer family of feed-through capacitors, which are engineered to replace traditional LC filters in compact designs. Unlike standard multilayer ceramic capacitors that rely on external inductance, these components embed the conductive path within the dielectric stack. This integration allows for significant miniaturization while maintaining effective noise suppression characteristics in sensitive electronic environments.

Replacement Considerations

Direct substitutes must match the 1200 pF capacitance, 100 V rating, 1 A current capability, and 0805 three-pad form factor. Verify that any replacement maintains the same feed-through topology to preserve the low-inductance benefits. Standard two-terminal capacitors will not provide equivalent performance due to higher parasitic inductance.