PACUSB-D1Y5R

Overview

The PACUSB-D1Y5R is a USB downstream port terminator, EMI filter, and transient over-voltage protector in a single surface-mounted package. It integrates EMI/RFI filter components R1 and C1, along with required 15kΩ pull-down resistors (R2) to GND. The device provides high-level electrostatic discharge protection, dissipating strikes of +15kV per IEC 61000-4-2 and +20kV per MIL-STD-883D Method 3015. Manufactured in a 5-pin SOT23-5 package, it features a series resistor R1 value of 33 Ω typical at 25°C. Standard operating conditions range from -40°C to +85°C.

Feature Summary

• Integrates EMI/RFI filtering components and 15kΩ pull-down resistors for USB data lines
• Provides robust electrostatic discharge protection up to +15kV contact discharge
• Compact surface-mounted package design reduces board space requirements

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 PACUSB-D1Y5R against the manufacturer's current documentation to confirm lead-free finishing and tape and reel packaging specifications. Ensure compatibility with standard SOT23-5 footprint requirements during procurement planning.

Selection Notes

Select this component when a compact solution for USB downstream port termination and EMI filtering is required. The 33 Ω series resistance option suits applications needing impedance matching close to the 45 Ω characteristic impedance of USB cables. Verify that the 5-pin SOT23-5 package aligns with the PCB layout constraints.

Part Context

This device belongs to the PACUSB-D1/D2/D3 family of USB downstream port terminators. Variants within the family differ primarily by the value of the integrated series resistor R1, offering options of 15 Ω, 22 Ω, or 33 Ω to match specific cable impedance requirements while maintaining identical ESD protection and filtering capabilities.

Replacement Considerations

The datasheet notes pin-compatible alternatives such as the ST Microelectronics USBDFxxW5 USB Downstream Port Terminator. Verify electrical characteristics and package dimensions before substitution.