USBDF02W5

Overview

The USBDF02W5 is a dual-element, bi-directional EMI/RFI filter and ESD protector designed for USB downstream ports. It integrates a second-order low-pass filter with line termination to limit electromagnetic interference while providing electrostatic discharge protection that exceeds IEC standards. The component utilizes a 5-pin SOT-323 surface-mount package. Key electrical parameters include a resistance of 15 ohms and a capacitance of 47 pF. This device serves as an effective solution for maintaining signal integrity and compliance in USB applications.

Feature Summary

• Integrates a second-order low-pass filter to suppress EMI/RFI noise in USB data lines
• Provides bidirectional ESD protection exceeding IEC standards for enhanced port durability
• Includes built-in line termination to ensure proper signal impedance matching
• Utilizes a compact 5-pin SOT-323 surface-mount package for space-efficient design

Applications

• USB downstream port filtering and protection
• EMI suppression in USB peripheral devices
• ESD protection for USB host controllers

Procurement Notes

Verify current availability status as this product may be discontinued or subject to supply constraints. Confirm package type and pinout compatibility with existing PCB layouts. Check for alternative components if end-of-life notifications apply. Ensure sourcing from authorized distributors to guarantee authenticity and quality control standards are met for critical interface circuits.

Selection Notes

Select this component when designing USB interfaces requiring integrated EMI filtering and ESD protection in a minimal footprint. Consider the 15-ohm resistance and 47-pF capacitance values for impedance matching requirements. Evaluate the SOT-323 package size against board space limitations. Verify that the bidirectional nature meets the specific data line configuration needs of the target application.

Part Context

The USBDFxxW5 series from STMicroelectronics provides recommended line termination while implementing low-pass filtering to limit EMI levels. These components offer ESD protection exceeding IEC standards, making them suitable for robust USB interface designs. The series addresses common challenges in maintaining signal integrity and protecting sensitive ports from environmental electrostatic discharges in consumer electronics.

Replacement Considerations

Public sources indicate this product is no longer manufactured. Designers should evaluate alternative EMI filters with similar 15-ohm resistance and 47-pF capacitance specifications. Ensure any substitute maintains the 5-pin SOT-323 form factor or adapts the PCB layout accordingly. Verify that replacement parts meet the same IEC ESD protection standards required for the original design.