1812Y0500392MSTE03

Overview

The Knowles Syfer 1812Y0500392MSTE03 is a feed-through multilayer ceramic capacitor (MLCC) designed for surface-mount technology. It features a capacitance of 3900 pF with a voltage rating of 50 VDC and a tolerance of ±20%. Utilizing X7R dielectric material, this component operates within a temperature range of -55°C to +125°C. The device incorporates a nickel barrier termination system and belongs to the FlexiCap series, which provides flexible terminations to enhance mechanical reliability under stress.

Feature Summary

• Integrated feed-through architecture for efficient signal filtering
• Flexible soft terminations to absorb mechanical strain
• Nickel barrier construction for robust solderability

Applications

• High-frequency noise suppression in RF circuits
• EMI/RFI filtering in communication modules
• Signal integrity protection in high-speed digital interfaces

Procurement Notes

Verify the specific suffix STE03 against official datasheets to confirm the feed-through configuration and terminal type. Ensure compatibility with PCB pad layouts designed for through-hole style components adapted for SMT. Confirm RoHS compliance status via current manufacturer documentation before integration into regulated assemblies.

Selection Notes

Select this component when space constraints require a compact footprint but high-frequency performance is critical. The X7R dielectric offers stable capacitance characteristics across varying temperatures. Consider the FlexiCap feature if the application involves thermal cycling or board flexing that might damage standard rigid terminations.

Part Context

This part belongs to the Knowles Syfer FlexiCap family, which specializes in MLCCs with compliant terminations. The 1812Y series designation indicates an X7R dielectric grade within the 1812 package size. The MSTE03 suffix specifically identifies the feed-through variant with nickel barrier terminations, distinguishing it from standard parallel-plate capacitors.

Replacement Considerations

Direct substitutes must match the 1812 feed-through form factor and 3900 pF value. Verify that alternative parts support the same 50 VDC rating and X7R temperature stability. Ensure replacement components also feature flexible terminations if mechanical durability is a design requirement.