MMBT3906 PNP Transistor: CAD Models, Features and Package | Heisener Electronics
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MMBT3906 PNP Transistor: CAD Models, Features and Package

Post Date: 2024-07-08 , Fairchild/ON Semiconductor

MMBT3906 Introduction

The MMBT3906 is a PNP bipolar junction transistor (BJT) commonly used in low-power. The transistor is characterized by its maximum current rating of 200 mA and a maximum voltage rating of 40 V.

In a PNP transistor, when a small current flows from the emitter to the base (with the base being at a lower voltage than the emitter), it allows a larger current to flow from the emitter to the collector. This current amplification property is utilized in switching and amplification circuits. When the base of the MMBT3906 is pulled low relative to the emitter, it allows current to flow from the emitter to the collector, effectively turning the transistor "on." Conversely, when the base is at a higher voltage relative to the emitter, the transistor is "off," preventing current flow from the emitter to the collector.

                                                                                                                                                            MMBT3906 Pinout


                                                                                                                                                        MMBT3906 CAD Models





                                                                                                                                                                 3D Model


MMBT3906 Specifications

Parameter Value
Transistor Type PNP
Package Type SOT-23
Maximum Collector-Emitter Voltage 40 V
Maximum Collector-Base Voltage 40 V
Maximum Emitter-Base Voltage 5 V
Maximum Collector Current 200 mA
Maximum Power Dissipation 300 mW
DC Current Gain 100 to 300
Transition Frequency 250 MHz
Collector-Emitter Saturation Voltage 0.2 V (max) at Ic = 10 mA, Ib = 1 mA
Operating Temperature Range -55°C - 150°C

MMBT3906 Features

Epitaxial Planar Die Construction

Applied to Medium Power Amplification and Switching

Complementary NPN Type: MMBT3904

Totally Lead-Free & Fully RoHS Compliant

Halogen and Antimony Free. "Green" Device

Qualified to AEC-Q101 Standards for High Reliability

PPAP Capable

MMBT3906 Applications

Switching Circuits


Digital Circuits

Sensor Interfaces

LED Drivers

Pulse Width Modulation (PWM) Circuits

Oscillators and Timers

General-Purpose Amplification

                                                                                                                                                  MMBT3906 Marketing Information


MMBT3906 Package

The MMBT3906 is housed in a SOT-23 package, which is a small-outline transistor package designed for surface-mount technology (SMT). This package features three leads and a compact size, with dimensions approximately 2.9 mm in length, 1.3 mm in width, and 1.1 mm in height. The pin configuration includes the emitter, base, and collector, arranged in a manner conducive to efficient PCB layout. 

How to Use MMBT3906?

The MMBT3906 transistor has three pins: the emitter (E), base (B), and collector (C). For switching applications, connect the emitter to the negative supply voltage and the collector to the load. The base is then connected to the control signal through a current-limiting resistor to ensure the base current does not exceed the transistor's maximum rating.

When using the MMBT3906 for amplification, it is typically configured in a common-emitter setup. The input signal is applied to the base through a coupling capacitor, and the output is taken from the collector. A biasing network of resistors is used to set the operating point of the transistor, enabling it operates in the desired region of its characteristic curves. 

MMBT3906 Equivalents

Equivalent Transistor Type Vce (max) Ic (max) hFE (min) Package
SMBT3906S PNP 40V 200mA 100 SOT-23
MMBT3906VL PNP 40V 200mA 100 SOT-23
PMBT3906 PNP 40V 200mA 100 SOT-23
2SA1366 PNP 50V 1A 200 TO-92
2SA1518 PNP 50V 150mA 200 TO-92
2SA1519 PNP 50V 150mA 200 TO-92
2SA1520 PNP 50V 150mA 200 TO-92


Can the MMBT3906 be used in place of other PNP transistors?

Yes, the MMBT3906 can replace other PNP transistors with similar specifications, such as the SMBT3906S, PMBT3906, and 2SA1366, among others.

How do I use the MMBT3906 in a switching application?

In switching applications, the MMBT3906 can be used as an electronic switch. When a small current is applied to the base, it allows a larger current to flow from the emitter to the collector.

What precautions should I take when using the MMBT3906?

The maximum ratings for voltage, current, and power dissipation are not exceeded. Use proper heat sinking if necessary and avoid static discharge damage by handling the device with care.

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