BC440-6 Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 50 V
• Emitter-Base Voltage, max: 5 V
• Collector Current − Continuous, max: 1 A
• Collector Dissipation: 10 W
• DC Current Gain (h_fe): 115 to 250
• Transition Frequency, min: 50 MHz
• Operating and Storage Junction Temperature Range: -55 to +200 °C
• Package: TO-39

Here is an image showing the pin diagram of this transistor.The BC440-6 transistor can have a current gain of 115 to 250. The gain of the BC440 will be in the range from 40 to 250, for the BC440-4 it will be in the range from 40 to 70, for the BC440-5 it will be in the range from 60 to 130.The complementary PNP transistor to the BC440-6 is the BC460-6.The 2SC3325 (SOT-23), 2SC3912 (SOT-23), 2SC3913 (SOT-23), 2SC3914 (SOT-23), 2SC3915 (SOT-23), 2SD1622 (SOT-89), 2SD602A (SOT-23), 2SD874A (SOT-89), BC817 (SOT-23), BC817-16 (SOT-23), BC817-16W (SOT-323), BC817W (SOT-323), BCX19 (SOT-23), KST4401 (SOT-23), MMBT4401 (SOT-23), MMST4401 (SOT-323), PMBT4401 (SOT-23) and PMST4401 (SOT-323) is the SMD version of the BC440-6 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.You can replace the BC440-6 with the 2N3019, 2N3107, 2N3109, 2N4032, 2N4033, 2N5321, BC140, BC140-16, BC141, BC141-16, BC441 or BC441-6.