BC259C Bipolar Transistor

• Type: PNP
• Collector-Emitter Voltage, max: -20 V
• Collector-Base Voltage, max: -25 V
• Emitter-Base Voltage, max: -5 V
• Collector Current − Continuous, max: -0.1 A
• Collector Dissipation: 0.3 W
• DC Current Gain (h_fe): 420 to 800
• Transition Frequency, min: 180 MHz
• Noise Figure, max: 1.2 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC259C 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 BC259C transistor can have a current gain of 420 to 800. The gain of the BC259 will be in the range from 110 to 800, for the BC259A it will be in the range from 110 to 220, for the BC259B it will be in the range from 200 to 450.The complementary NPN transistor to the BC259C is the BC169C.You can replace the BC259C with the 2SA1282A, 2SA1286, 2SA1286-G, 2SA628, 2SA628-G, BC258, BC258C, MPS3638, MPS3638A, PN3638 or PN3638A.