1812J1000333MJTE03

Overview

The Knowles Syfer 1812J1000333MJTE03 is a feed-through multilayer ceramic capacitor designed for surface mount applications. It features a capacitance of 0.033 µF with a rated DC voltage of 100V and a maximum current rating of 50 mA. The component utilizes X7R dielectric material, providing stability across an operating temperature range of -55°C to +125°C. Housed in a 1812 (4532 metric) package footprint requiring three pads, it offers high-frequency noise suppression capabilities suitable for demanding electronic environments.

Feature Summary

• Integrated feed-through architecture combining filtering and decoupling functions within a single surface-mount component
• High-current handling capability up to 50 mA for power line noise suppression applications
• X7R temperature-stable dielectric material ensuring consistent performance across wide thermal ranges

Applications

• Power supply input/output filtering for noise attenuation
• High-frequency signal line decoupling in sensitive circuits
• EMI/RFI suppression on data and control lines

Procurement Notes

Verify the specific pin configuration and pad layout requirements against your PCB design guidelines before ordering. Confirm that the 50 mA current rating meets your circuit's operational demands. Ensure compatibility with the 1812 footprint dimensions. Check for RoHS compliance status if required by your manufacturing standards. Validate the supplier's authenticity through official Knowles Syfer channels.

Selection Notes

Select this component when space-constrained designs require integrated filtering without additional discrete inductors or capacitors. Consider the 100V rating and 50 mA limit for appropriate voltage and current margins. The X7R dielectric offers a balance between capacitance density and temperature stability compared to Class 1 alternatives. Evaluate the three-pad footprint requirement against available board real estate.

Part Context

This part belongs to the Knowles Syfer 1812J series of feed-through capacitors. These components are engineered specifically for high-reliability applications where traditional filter topologies consume excessive board space. The series integrates the capacitor element directly into the signal path, offering superior high-frequency performance compared to standard MLCCs used in parallel configurations.

Replacement Considerations

Direct substitutes must match the 1812 footprint, 0.033 µF capacitance, 100V rating, and 50 mA current handling. Verify that alternative feed-through capacitors maintain similar impedance characteristics at target frequencies. Standard MLCCs cannot replace this function due to the lack of integrated series inductance.