1812J1000104MJTE03

Overview

The Knowles Syfer 1812J1000104MJTE03 is a feed-through multilayer ceramic capacitor designed for high-frequency noise suppression. It features a capacitance of 0.1 µF with a ±20% tolerance and a DC voltage rating of 100 VDC. The component utilizes an X7R dielectric material, ensuring stability across an operating temperature range of -55°C to +125°C. Housed in a standard 1812 (4532 metric) surface-mount package, it integrates a built-in current limit of 50 mA. This configuration provides effective EMI filtering while maintaining structural integrity in demanding electronic environments.

Feature Summary

• Integrated feed-through architecture combining capacitance with series resistance for enhanced high-frequency attenuation
• Built-in 50 mA current limiting capability to protect sensitive circuit paths from overcurrent events
• X7R dielectric composition providing stable electrical performance across wide industrial temperature variations

Applications

• EMI/RFI noise suppression in high-speed digital signal lines
• Power distribution network filtering for integrated circuits
• High-reliability automotive electronics requiring robust transient protection

Procurement Notes

Verify the specific suffix MJTE03 against official Knowles Syfer documentation to confirm the feed-through variant characteristics. Ensure design compatibility with the specified 50 mA current limit and 100 VDC rating. Confirm that the 1812 footprint matches the target PCB layout constraints. Cross-reference the latest datasheet for any updates on RoHS compliance or material declarations prior to final procurement authorization.

Selection Notes

Select this component when simultaneous capacitance and series resistance are required for superior high-frequency damping compared to standard MLCCs. The 1812 package offers a balance between capacitance density and thermal dissipation. Consider the 50 mA internal fuse characteristic as a protective feature for downstream components. Validate that the X7R temperature coefficient meets the operational requirements of the specific application environment.

Part Context

This part belongs to the Knowles Syfer high-reliability MLCC family, specifically engineered for applications demanding rigorous environmental stability. The 1812J prefix indicates the 1812 case size and general product line classification. The MJTE03 suffix denotes the specific termination, packaging, and feed-through functional attributes unique to this variant within the broader capacitor portfolio.

Replacement Considerations

Publicly confirmed substitute part numbers for this specific feed-through variant are not available in the provided source data. Standard MLCC replacements will lack the integrated current-limiting and feed-through filtering properties. Verify exact pinout and electrical specifications before considering any alternative components.