A Tube case is used to deliver the Voltage Regulated IC. A TO-261-4, TO-261AA case is used for packaging. As you can see, the IC chip has 4 terminations. Regulator IC chip's output type is Fixed. The electronic part implements 1 regulators in total. In this Regulator IC chip, the operating temperature of Surface Mount varies. 0°C~125°C degrees is the operating temperature of the Voltage Regulator IC. There is one output function configured for this voltage regulator IC, and that is Positive. As far as its current output is concerned, it stands at 300mA. There are 3 pins in total in this voltage regulator IC. It has 1 outputs to ensure that the performance of this regulator is prompt and sufficient. For your information, this regulator's basic part number is LT1521.
LT1521CST-3.3#PBF Features
LT1521CST-3.3#PBF Applications
There are a lot of Linear Technology/Analog Devices LT1521CST-3.3#PBF Linear Voltage Regulators applications.