TPD2EUSB30DRTR

• Two-Channel Unidirectional TVS Diode Array
• 5.5V Reverse Standoff and Working voltage, 9V breakdown, 8V Clamping
• 800 fF Capacitance per Channel for High-Speed Data Lines
• 1A Peak Pulse Current and 45W Peak Pulse Power
• 3-Pin Surface-Mount package, 1mm by 800um, 500um Maximum Height
• Halogen-free, Lead-free, RoHS and ELV compliant, MSL 1, 3000 per Reel

The Texas Instruments TPD2EUSB30DRTR is a two-channel unidirectional TVS diode array for ESD protection, with a 5.5V reverse standoff voltage, 9V breakdown voltage and 8V clamping voltage. Its 800 fF capacitance per channel is low enough to sit directly on high-speed data lines without materially degrading signal integrity, which is the design constraint that separates data-line ESD protection from a general-purpose TVS. It absorbs up to 1A peak pulse current and 45W peak pulse power, and is specified from -40C to 85C. The 3-pin package measures 1mm by 800um with a 500um maximum height; note the catalog lists the case as SOT-23 while the product title says SOT-933, and the recorded dimensions match the smaller SOT-933 outline, so the footprint should be confirmed.

Low-capacitance ESD arrays such as the TPD2EUSB30DRTR are placed on the differential pairs of external connectors - USB data lines, display and camera interfaces, and other high-speed ports that a person can touch - so that an electrostatic discharge is clamped before it reaches the transceiver. Two channels matched to a 5.5V working voltage suit a single differential pair operating on a 5V-referenced bus. Designers use them in laptops, docks and hubs, consumer and handheld devices, set-top and networking equipment, industrial panels and infotainment USB ports. The 800 fF figure is the number to check in a design review, because excess shunt capacitance on a multi-gigabit pair closes the eye more than the ESD event it was added to survive.