2SC1959 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 35 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.5 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 70 to 400
• Transition Frequency, min: 300 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The 2SC1959 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 emitter, collector, and base leads.
Here is an image showing the pin diagram of this transistor.The 2SC1959 transistor can have a current gain of 70 to 400. The gain of the 2SC1959-GR will be in the range from 200 to 400, for the 2SC1959-O it will be in the range from 70 to 140, for the 2SC1959-Y it will be in the range from 120 to 240.Sometimes the "2S" prefix is not marked on the package - the 2SC1959 might only be marked "C1959".The complementary PNP transistor to the 2SC1959 is the 2SA562TM.The 2SC2859 (SOT-23), 2SC4118 (SOT-323), KTC3876 (SOT-23) and KTC3876S (SOT-23) is the SMD version of the 2SC1959 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC1959 with the 2SC3916, 2SC3917, 2SC3918, 2SC3919, 2SC3920, 2SC3921, 2SC3922, 2SC3923 or KSC1008C.