6 V clamping — what it protects
The TPD2S703QDSKRQ1 from Texas Instruments is a single-channel USB ESD protection diode in a 10-WFDFN Exposed Pad package (10-SON 2.5x2.5). Its 6 V clamping voltage is set to clip transients on a USB data line or VBUS without loading the nominal 5 V bus. The mixed-technology construction handles fast ESD events while keeping the signal path capacitance low enough for USB 2.0 data rates — no bit-error or eye-height penalty in a typical automotive infotainment or telematics port.
Automotive USB port protection — the qualification check
The AEC-Q100 stamp is not a label — it is a documented qualification flow. For a USB port on an automotive head unit or a telematics control unit, the OEM will require grade-2 or better depending on the temperature zone. The TPD2S703QDSKRQ1 carries the AEC-Q100 series designation, which covers the device-level reliability testing: temperature cycling, HBM/ CDM ESD, latch-up, and high-temperature operating life. If you are sourcing for a PPAP submission, this part's active status means the manufacturer still supports it with full documentation and no last-time-buy clock is ticking.