STS234050UL65 is a TVS diode array ESD suppressor designed to protect four I/O lines against electrostatic discharge and transient overvoltage events. This unidirectional device features a reverse working voltage of 5.0 V and a reverse breakdown voltage ranging from 6.0 V to 10.0 V, with low clamping voltage characteristics (9.5 V to 11 V at 1 A pulse current and 11 V to 13 V at 8 A pulse current on 8/20 µs waveform). The device meets IEC 61000-4-2 ESD protection standards up to ±30 kV (air and contact) and IEC 61000-4-5 lightning surge protection up to 24 A (8/20 µs), with exceptionally low junction capacitance of 1.2 pF to 1.5 pF (pin to ground) and 0.65 pF to 0.75 pF (between I/O pins). It is housed in a SOT23-6L package with RoHS compliance, lead-free termination, and UL 94V-0 flammability rating, making it ideal for USB power and data line protection, digital video interfaces, notebook computers, and Ethernet applications.