The PESD3V3L2UM,315 Uni-directional TVS (Transient Voltage Suppressor) Diode, manufactured by Nexperia, is used to protect sensitive electronics against destructive overvoltages. It is rated for an arc power of 0.03kW, has a voltage range of 5.32 to 5.88V, and can handle up to 3A of current. It has a standard SOT883 package and is suitable for both surface mount and through-hole installation.