KSD261CG Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 20 V
• Collector-Base Voltage, max: 40 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.5 A
• Collector Dissipation: 0.5 W
• DC Current Gain (h_fe): 200 to 400
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The KSD261CG 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. Suffix "C" means center collector in KSD261G.
Here is an image showing the pin diagram of this transistor.The KSD261CG transistor can have a current gain of 200 to 400. The gain of the KSD261C will be in the range from 120 to 400, for the KSD261CY it will be in the range from 120 to 240.The complementary PNP transistor to the KSD261CG is the KSA643CG.The 2SC3326 (SOT-23), 2SC3326-A (SOT-23), KTC2875 (SOT-23) and KTC2875-A (SOT-23) is the SMD version of the KSD261CG transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the KSD261CG with the 2N3394, 2N3415, 2N3706, 2SC1959, 2SC1959-GR, 2SC2001, 2SC2001-K, 2SC2500, 2SC2500-A, 2SC2500-B, 2SC2500-C, 2SC2500-D, 2SC3242A, 2SC3266, 2SC3266-GR, 2SD471, 2SD471K, 2SD545, 2SD734, KSC2500, KSC2500-A, KSC2500-B, KSC2500-C, KSC2500-D, KSC5019, KSD1020, KSD1020-G, KSD1021, KSD1021-G, KSD471AC, KSD471ACG, KTC3266, KTC3266-GR, KTD1146 or KTD1146Y.