2SC3952 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 70 V
• Collector-Base Voltage, max: 80 V
• Emitter-Base Voltage, max: 3 V
• Collector Current − Continuous, max: 0.5 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 40 to 320
• Transition Frequency, min: 700 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-126F

Here is an image showing the pin diagram of this transistor.The 2SC3952 transistor can have a current gain of 40 to 320. The gain of the 2SC3952-C will be in the range from 40 to 80, for the 2SC3952-D it will be in the range from 60 to 120, for the 2SC3952-E it will be in the range from 100 to 200, for the 2SC3952-F it will be in the range from 160 to 320.Sometimes the "2S" prefix is not marked on the package - the 2SC3952 might only be marked "C3952".The complementary PNP transistor to the 2SC3952 is the 2SA1537.You can replace the 2SC3952 with the 2SD414, 2SD415, BD169, BD237, BD237G, BD379, MJE242, MJE244 or MJE722.