Bipolar (BJT) Transistor NPN 40V 200 mA 300MHz 300 mW Surface Mount SOT-23-3 (TO-236)
The MMBT3904LT1G is a general-purpose NPN bipolar junction transistor designed for switching and amplification applications. It is housed in a compact SOT-23 surface-mount package, making it suitable for high-density PCB designs. This transistor is widely used in low-power signal processing, digital switching, and analog amplification circuits due to its reliable performance and fast switching characteristics.
Key Features
General-purpose NPN transistor
Compact SOT-23 surface-mount package
Fast switching speed
Low saturation voltage
Suitable for low-current and low-power applications
High reliability and stability
Pb-free, Halogen-free, and RoHS compliant
Electrical Characteristics (Typical @ 25°C unless otherwise specified)
Collector-Emitter Voltage (VCEO): 40 V
Collector-Base Voltage (VCBO): 60 V
Emitter-Base Voltage (VEBO): 6 V
Collector Current (IC): 200 mA (max)
DC Current Gain (hFE): 100 – 300
Collector-Emitter Saturation Voltage (VCE(sat)): 0.2 V (typ)
Transition Frequency (fT): ~300 MHz
Absolute Maximum Ratings
Collector Current (Continuous): 200 mA
Power Dissipation: ~225 mW
Junction Temperature: +150°C (max)
Operating Temperature Range: -55°C to +150°C
Storage Temperature Range: -55°C to +150°C
Mechanical Characteristics
Package Type: SOT-23 (TO-236AB)
Mounting Type: Surface Mount
Number of Pins: 3
Marking Code: Dependent on lot/manufacturer marking
Applications
General-purpose switching circuits
Signal amplification
Digital logic interfacing
LED drivers and small load switching
Audio and RF signal processing
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