bc337.pdf datasheet:

DIP Type TransistorsNPN TransistorsBC337 (KC337)TO-92Unit: mm+0.254.58 0.15 Features Collector Current Capability IC=0.5A 0.46 0.10 Collector Emitter Voltage VCEO=45VC Complement to BC327.+0.101.27TYP 1.27TYP 0.38 0.051 2 3B [1.27 0.20] [1.27 0.20]3.60 0.20E 1. Emitter2. Base(R2.29)3. Collector Absolute Maximum Ratings Ta = 25Parameter Symbol Rating Unit Collector - Base Voltage VCBO 50 Collector - Emitter Voltage VCEO 45 V Emitter - Base Voltage VEBO 5 Collector Current - Continuous IC 500 mA Collector Current - Pulse ICP 1 A Base Current - Pulse IBP 200 mA Collector Power Dissipation PC 625 mW Thermal Resistance From Junction to Ambient RJA 0.2 /mw Junction Temperature TJ 150 Storage Temperature Range Tstg -65 to 150 Electrical Characteristics Ta = 25Parameter Symbol Test C