1812J0250125MXTE07

Overview

The Knowles Syfer 1812J0250125MXTE07 is a three-terminal multilayer ceramic feed-through capacitor designed for surface mount applications. It features an X7R dielectric with a capacitance of 1.2 µF and a tolerance of ±20%. The component is rated for a DC voltage of 25 VDC and operates within a temperature range of -55°C to +125°C. Housed in a standard 1812 (4532 metric) package, it utilizes a nickel barrier and 100% tin termination system. This device functions as an EMI filter, providing high current handling capabilities suitable for power line filtering.

Feature Summary

• Three-terminal feed-through architecture for effective electromagnetic interference suppression
• High current handling capability integrated into a compact surface-mount footprint
• X7R dielectric material ensures stable capacitance performance across the operating temperature range

Applications

• EMI filtering on power input lines
• Noise suppression in DC-DC converter circuits
• Electromagnetic compatibility enhancement in portable electronic devices

Procurement Notes

Verify the specific termination finish and package dimensions against your PCB layout requirements before ordering. Confirm that the 25V DC rating and 1.2µF capacitance align with your circuit's electrical specifications. Ensure the manufacturing date code meets any long-term storage or reliability standards required by your application. Cross-reference the supplier's documentation for RoHS compliance status.

Selection Notes

Select this component when a compact solution is needed for high-current EMI filtering. The three-terminal design offers superior high-frequency noise attenuation compared to standard two-terminal capacitors. Consider the X7R dielectric characteristics for applications requiring moderate stability over temperature variations. Evaluate the physical size constraints to ensure the 1812 footprint fits the available board space.

Part Context

This part belongs to the Knowles Syfer family of high-reliability multilayer ceramic capacitors. The '1812' designation indicates the standardized imperial case size, while 'J' typically denotes the voltage coding within the series. As a feed-through type, it integrates ground connections internally to minimize parasitic inductance, distinguishing it from conventional MLCCs used for general decoupling.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source data. Verify compatibility with alternative manufacturers by matching the 1812 footprint, 1.2µF capacitance, 25V rating, and three-terminal configuration.