2SD601A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 50 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 7 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.2 W
• DC Current Gain (h_fe): 160 to 460
• Transition Frequency, min: 150 MHz
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The 2SD601A transistor can have a current gain of 160 to 460. The gain of the 2SD601A-Q will be in the range from 160 to 260, for the 2SD601A-R it will be in the range from 210 to 340, for the 2SD601A-S it will be in the range from 290 to 460.Sometimes the "2S" prefix is not marked on the package - the 2SD601A might only be marked "D601A".The complementary PNP transistor to the 2SD601A is the 2SB709A.You can replace the 2SD601A with the 2SC1623, 2SC2412, 2SC2712, 2SC3441, 2SC3912, 2SC3913, 2SC3914, 2SC3915, 2SC4738, BC846, FMMT619, FMMT620, FMMTA05, FMMTA06, KSC1623, KST05, KST06, KTC3875, KTC3875S, MMBT2484, MMBTA05, MMBTA06, PMBTA06, SMBTA05 or SMBTA06.