The USBLC6-2SC6 ,from STMicroelectronics, is a Steering (Rail to Rail) diodes, package in a SOT-23-6 and SMD (SMT) package. It is designed for transient overvoltage protection, targeting Ethernet applicaition. It is rated over a -40°C to 125°C (TJ) temperature range. The rate stand-off voltage for the USBLC6-2SC6 is 5.25V volts. The minimum breakdown voltage is given for 6V. It can support the clamping voltage and peak pulse current of up to 17V and 5A (8/20μs) , respectively.