2SC3940A-R Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 1 W
• DC Current Gain (h_fe): 120 to 240
• Transition Frequency, min: 200 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92MOD

Here is an image showing the pin diagram of this transistor.The 2SC3940A-R transistor can have a current gain of 120 to 240. The gain of the 2SC3940A will be in the range from 85 to 340, for the 2SC3940A-Q it will be in the range from 85 to 170, for the 2SC3940A-S it will be in the range from 170 to 340.Sometimes the "2S" prefix is not marked on the package - the 2SC3940A-R might only be marked "C3940A-R".The complementary PNP transistor to the 2SC3940A-R is the 2SA1534A-R.The 2SC3444 (SOT-89), 2SD1622 (SOT-89), 2SD602A (SOT-23), 2SD602A-R (SOT-23), 2SD874A (SOT-89), 2SD874A-R (SOT-89), BCP55 (SOT-223), BCP55-16 (SOT-223), BCX55 (SOT-89), BCX55-16 (SOT-89), BSP41 (SOT-223), BSR41 (SOT-89), FMMTA05 (SOT-23), KST05 (SOT-23), MMBTA05 (SOT-23), PZTA05 (SOT-223) and SMBTA05 (SOT-23) is the SMD version of the 2SC3940A-R transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the 2SC3940A-R with the 2SC1384, 2SC1384-R, 2SC2655, 2SC2655Y, 2SC3243, 2SC3328, 2SC3328-Y, 2SC4408, 2SD1207, 2SD1347, 2SD1835, 2SD667, 2SD789, 2SD863, KTC1008, KTC3209, KTC3209Y or KTD863.