The MMBT3906 is a versatile PNP bipolar junction transistor (BJT) housed in a tiny SOT-23 surface-mount package.It is designed as a general-purpose amplifier and switch, capable of handling currents up to 200mA. Whether you are building an H-bridge, a signal inverter, or a small LED driver, the MMBT3906 is a staple component for any SMD-based project. It is the SMD equivalent of the famous 2N3906 through-hole transistor, making it easy to port your breadboard designs to a final PCB.
Key Features
PNP Complement: Works perfectly in pairs with the MMBT3904 (NPN).
Ultra-Compact SOT-23: Saves valuable PCB space compared to traditional TO-92 packages.
General Purpose: Suitable for a wide range of low-power switching and signal amplification tasks.
High Frequency: Excellent performance for fast switching applications.
Industry Standard: Compatible with all standard automated pick-and-place assembly machines.
Technical Specifications
Feature
Specification
Transistor Type
PNP
Package / Case
SOT-23 (SMD)
Collector-Emitter Voltage (VCEO)
40V
Collector-Base Voltage (VCBO)
40V
Continuous Collector Current (IC)
200mA
Max Power Dissipation (PD)
350mW
DC Current Gain (hFE)
100 to 300
Transition Frequency (fT)
250 MHz
Common Applications
Low-Side Switching: Turning on/off small loads like LEDs or buzzers.
Signal Inversion: Reverting logic signals in digital circuits.
Push-Pull Amplifiers: Used in combination with NPN transistors for audio or signal output.
Level Shifting: Translating voltages between different circuit sections.
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