BC850A Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 45 V
• Collector-Base Voltage, max: 50 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 0.1 A
• Collector Dissipation: 0.25 W
• DC Current Gain (h_fe): 110 to 220
• Transition Frequency, min: 150 MHz
• Noise Figure, max: 1.2 dB
• Operating and Storage Junction Temperature Range: -65 to +150 °C
• Package: SOT-23

Here is an image showing the pin diagram of this transistor.The BC850A transistor can have a current gain of 110 to 220. The gain of the BC850 will be in the range from 110 to 800, for the BC850B it will be in the range from 200 to 450, for the BC850C it will be in the range from 420 to 800.The complementary PNP transistor to the BC850A is the BC860A.You can replace the BC850A with the 2SC1623, 2SC2712, 2SC3325, 2SC3441, 2SC3912, 2SC3913, 2SC3914, 2SC3915, 2SC4209, 2SC4738, 2SD602A, BC817, BC817-16, BC846, BC846A, BC847, BC847A, BCV71, BCW66, BCW66F, BCX19, FMMT491, FMMT491Q, FMMT619, FMMT620, FMMTA05, FMMTA06, KSC1623, KST05, KST06, KTC3875, KTC3875S, MMBT100, MMBT2484, MMBTA05, MMBTA06, PMBTA06, SMBTA05, SMBTA06 or TMBT3904.