1812Y1000392MJTE03

Overview

The Knowles Syfer 1812Y1000392MJTE03 is a surface-mount feed-through multilayer ceramic capacitor in an 1812 (4532 metric) package. It features a capacitance of 3900 pF with a DC voltage rating of 100 V and a tolerance of ±20%. The component utilizes X7R dielectric material, ensuring stability across an operating temperature range of -55°C to +125°C. Designed for high-frequency noise suppression, it supports a current rating of 50 mA and requires a three-pad PCB footprint.

Feature Summary

• Integrated feed-through architecture provides effective electromagnetic interference filtering within a compact surface-mount form factor.

Applications

• High-frequency noise suppression in electronic circuits
• Signal integrity protection in sensitive RF applications
• Power line filtering for low-current DC rails

Procurement Notes

Verify the specific three-pad pad layout requirements during schematic capture, as this feed-through design differs from standard two-terminal MLCCs. Confirm that the 50 mA current rating aligns with the target circuit's operational limits. Ensure the 1812 package dimensions fit the designated board space without mechanical interference.

Selection Notes

Select this component when integrated EMI filtering is required without adding discrete inductors or resistors. The X7R dielectric offers stable capacitance over temperature variations suitable for general-purpose filtering. Consider the three-terminal mounting requirement and verify compatibility with automated pick-and-place equipment capable of handling feed-through geometries.

Part Context

This part belongs to the Knowles Syfer FlexiCap™ family, which emphasizes reliability in board-flex-sensitive environments. As a feed-through capacitor, it combines decoupling and filtering functions into a single device, simplifying bill-of-materials and reducing assembly complexity compared to discrete filter networks.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical ratings before considering alternative manufacturers' feed-through capacitors.

FAQ

What is the maximum current rating for this feed-through capacitor?

The component supports a continuous current rating of 50 mA.

How many PCB pads are required for mounting this component?

A three-pad footprint is required to accommodate the feed-through terminal and ground connections.