View bas79a datasheet:

Silicon Switching Diodes BAS 79 A … BAS 79 D Switching applications High breakdown voltage Common cathode Type Marking Ordering Code Pin Configuration Package1) (tape and reel) BAS 79 A BAS 79 A Q62702-A914 SOT-223 BAS 79 B BAS 79 B Q62702-A915 BAS 79 C BAS 79 C Q62702-A916 BAS 79 D BAS 79 D Q62702-A917 Maximum Ratings Parameter Symbol Values Unit BAS BAS BAS BAS 79 A 79 B 79 C 79 D Reverse voltage VR 50 100 200 400 V Peak reverse voltage VRM 50 100 200 400 Forward current IF 1 A Peak forward current IFM 1 Surge forward current, t = 1 µs IFS 10 Total power dissipation, TS = 114 ?C2) Ptot 1.2 W Junction temperature Tj 150 ?C Storage temperature range Tstg – 65 … + 150 Thermal Resistance Junction - ambient2) Rth JA ? 170 K/W Junction - soldering point Rth JS ? 30