View lm7915 datasheet:

INCHANGE Semiconductor isc Three Terminal Negative Voltage Regulator LM7915 FEATURES ·Output current in excess of 1.5 A ·Output voltage of 15V ·Internal thermal overload protection ·Output transition Safe-Area compensation ·100% avalanche tested ·Minimum Lot-to-Lot variations for robust device performance and reliable operation ABSOLUTE MAXIMUM RATINGS(T =25℃) a SYMBOL PARAMETER RATING UNIT V DC input voltage -35 V i I Output current internally limited o P Power dissipation internally limited tot T Operating junction temperature 0~125 ℃ OP T Storage temperature -55~150 ℃ stg THERMAL CHARACTERISTICS SYMBOL PARAMETER MAX UNIT Thermal Resistance, Junction to Case 3 ℃/W R th j-c Thermal Resistance,Junction to Ambient 50 ℃/W R th j-a 1 isc webs