MMBT3904L Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 40 V
• Collector-Base Voltage, max: 60 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.2 A
• Collector Dissipation: 0.3 W
• DC Current Gain (h_fe): 100 to 400
• Transition Frequency, min: 250 MHz
• Noise Figure, max: 5 dB
• 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 MMBT3904L transistor is marked as "1E".The complementary PNP transistor to the MMBT3904L is the MMBT3906L.You can replace the MMBT3904L with the 2SC3441, 2SC3912, 2SC3913, 2SC3914, 2SC3915, BC817, BCW66, BCX19, FMMT619, FMMTA05, FMMTA06, KST05, KST06, MMBT100, MMBTA05, MMBTA06, PMBTA06, SMBTA05 or SMBTA06.