The BL9161G-30BARN manufactured by Belling is an SOT-23-5 linear voltage regulator, commonly known as an LP2951 LDO. It is a low dropout (LDO) voltage regulator with an input voltage ranging from 2.7V to 25V and an output voltage of 3.0V with a maximum output current of 250mA. It is a RoHS compliant device, meaning that it complies with the directives and regulations of the European Union restricting the use of hazardous substances within electrical and electronic equipment. It features over-current protection, thermal shutdown, and a low-power standby mode to help protect against short circuits and device malfunction. It also has an open drain shutdown and enable pins, as well as an adjustable reference voltage from 1.20V to 5.00V to optimize the output voltage of the device.