PACUSB-D2YB5R

Overview

The PACUSB-D2YB5R is a single-channel USB downstream port terminator, EMI filter, and transient over-voltage protector manufactured by onsemi. It integrates an R1 series resistor of 15 Ω (typical), a 15 kΩ pull-down resistor (R2) to ground, and matched capacitors for EMI suppression in a compact SC70-5 surface-mounted package. The device provides electrostatic discharge protection up to +20 kV contact discharge per MIL-STD-883D Method 3015 and +15 kV per IEC 61000-4-2. Standard operating conditions range from -40 °C to +85 °C with a maximum voltage rating of 6 V on any pin.

Feature Summary

• Integrates USB specification-recommended EMI/RFI filter components and required pull-down resistors into a single surface-mounted package
• Provides high-level electrostatic discharge protection for sensitive electronic components subjected to external strikes
• Features precision-matched capacitors that exceed standard USB specification requirements
• Offers pin-compatible replacement options for ST Microelectronics USBDFxxW5 devices

Applications

• ESD protection and termination of USB downstream ports
• Desktop PCs
• Notebooks
• Set-top boxes
• USB hubs

Procurement Notes

Verify the specific ordering part number against the manufacturer's current documentation to ensure correct component selection. Confirm that the lead-free finish variant matches the project requirements. Check the package type and marking codes to distinguish between different series resistance values within the same family. Ensure compliance with relevant environmental directives before finalizing procurement.

Selection Notes

Select the PACUSB-D2YB5R when a 15 Ω typical series resistance is required to match the USB cable characteristic impedance of 45 Ω. This specific part utilizes the SC70-5 package, which saves board space compared to discrete solutions. Verify that the application environment falls within the -40 °C to +85 °C operating temperature range. Consider the ESD withstand capabilities if the design requires robust protection against human body model discharges.

Part Context

This component belongs to the PACUSB-D1/D2/D3 family of USB downstream port terminators. The D2 variant specifically denotes the 15 Ω series resistor option. The 'YB' suffix indicates the SC70-5 package configuration, while the 'R' suffix signifies that the device is supplied in tape and reel form for automated assembly processes.

Replacement Considerations

The datasheet explicitly states that this device is pin-compatible with ST Microelectronics USBDFxxW5 USB Downstream Port Terminators. Designers may consider these parts as direct replacements without requiring PCB layout modifications.