BC337 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 V
• Collector-Base Voltage, max: 50 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.8 A
• Collector Dissipation: 0.625 W
• DC Current Gain (h_fe): 100 to 630
• Transition Frequency, min: 100 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC337 is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the collector, base, and emitter leads.
Here is an image showing the pin diagram of this transistor.The BC337 transistor can have a current gain of 100 to 630. The gain of the BC337-16 will be in the range from 100 to 250, for the BC337-25 it will be in the range from 160 to 400, for the BC337-40 it will be in the range from 250 to 630.The complementary PNP transistor to the BC337 is the BC327.The 2SC3912 (SOT-23), 2SC3913 (SOT-23), 2SC3914 (SOT-23), 2SC3915 (SOT-23), BC817 (SOT-23), BC817W (SOT-323) and BCX19 (SOT-23) is the SMD version of the BC337 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.