Active production — no end-of-life risk for this BOM line
The D5V0X1B2LP3-7: This is a current-production part you can specify into a new design without worrying about a mid-lifecycle respin.
What the 0.3 pF capacitance buys you on a high-speed bus
The 0.3 pF capacitance at 1 MHz is the headline spec for this Zener TVS. On a USB 2.0 differential pair, each added picofarad of loading erodes the eye diagram margin; 0.3 pF keeps the signal edge clean enough to pass the compliance mask without a redriver. Same story on HDMI, Gigabit Ethernet, or MIPI DSI — the diode sits on the line and clamps an ESD strike without rounding the rising edge.
Package and temperature — fits tight boards and hot environments
The X3-DFN0603-2 package is the 0201 (0603 metric) footprint — roughly 0.6 mm × 0.3 mm. That is small enough to place directly behind a connector pin or alongside a BGA bypass cap without forcing a board layer increase. The junction temperature range spans -65°C to 150°C. That covers the full automotive Grade 1 ambient band (-40°C to 125°C) with margin, so the diode does not derate in an engine-bay ECU or a hot-swap power supply. The single bidirectional channel means one device protects a differential pair or a single-ended line that sees both positive and negative transients.