STF202-22T1

Overview

The STF202-22T1G is a second-order low-pass RC (Pi) EMI filter designed for signal line protection. It integrates two channels with a resistance of 22 ohms and capacitance of 68 picofarads per channel. The component includes integrated ESD protection capabilities to safeguard sensitive interfaces. It is housed in a compact SC-74 (SOT-457) surface-mount package, suitable for space-constrained applications requiring noise suppression and transient protection.

Feature Summary

• Integrates dual-channel RC filtering topology for effective common-mode and differential-mode noise attenuation
• Includes built-in electrostatic discharge (ESD) protection circuitry for interface robustness
• Utilizes a compact SC-74 surface-mount package to minimize board space consumption

Applications

• USB data line filtering and protection
• High-speed digital interface noise suppression
• Portable electronic device signal integrity enhancement

Procurement Notes

Verify the specific ordering suffix 'G' when sourcing, as it typically denotes lead-free compliance and RoHS adherence. Confirm the package designation matches SC-74 or SOT-457 requirements for your PCB layout. Ensure the datasheet version aligns with current manufacturing specifications to avoid discrepancies in electrical characteristics or pin configurations during integration.

Selection Notes

Select this component when dual-channel EMI filtering combined with ESD protection is required in a single footprint. The 22-ohm resistance and 68-picofarad capacitance values are optimized for high-speed data lines such as USB. Consider the thermal performance and parasitic effects inherent to the small SC-74 package when designing for high-frequency applications.

Part Context

This part belongs to onsemi's family of passive EMI/RFI filters. These components are engineered to suppress electromagnetic interference in high-speed digital circuits. The STF202 series specifically targets applications where both signal integrity and component protection against static discharge are critical design constraints.

Replacement Considerations

Check for direct equivalents from other manufacturers offering identical 22-ohm/68-pF RC values in an SC-74 package. Verify that any substitute maintains comparable ESD protection ratings and insertion loss characteristics to ensure circuit compatibility without redesign.