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MMDT3906 from DIODES

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MMDT3906

Manufacturer: DIODES, CJ

Conductor Holdings Limited - Dual PNP Small Signal Surface Mount Transistor

Partnumber Manufacturer Quantity Availability
MMDT3906 DIODES, CJ 39698 In Stock

Description and Introduction

Conductor Holdings Limited - Dual PNP Small Signal Surface Mount Transistor # Introduction to the MMDT3906 Dual PNP Transistor  

The **MMDT3906** is a dual PNP bipolar junction transistor (BJT) housed in a compact SOT-363 surface-mount package. Designed for general-purpose amplification and switching applications, this component integrates two matched PNP transistors in a single chip, offering space-saving benefits and improved thermal performance in high-density circuit designs.  

With a collector-emitter voltage (**VCE**) rating of -40V and a continuous collector current (**IC**) of -200mA per transistor, the MMDT3906 is suitable for low-power signal processing, load switching, and driver stages. Its high current gain (**hFE**) of 100 to 300 ensures efficient signal amplification, while low saturation voltage enhances energy efficiency in switching applications.  

The SOT-363 package provides a small footprint, making the MMDT3906 ideal for portable electronics, embedded systems, and automated manufacturing where board space is constrained. Additionally, the dual-transistor configuration simplifies circuit layout by reducing component count.  

Key features include matched transistor characteristics for balanced performance in differential amplifier circuits and a wide operating temperature range (-55°C to +150°C), ensuring reliability in harsh environments.  

Common applications include audio amplifiers, logic level conversion, and signal conditioning circuits. Engineers favor the MMDT3906 for its consistent performance, compact form factor, and cost-effectiveness in mass production.  

For detailed specifications, always refer to the manufacturer’s datasheet to ensure proper implementation in your design.

Application Scenarios & Design Considerations

Conductor Holdings Limited - Dual PNP Small Signal Surface Mount Transistor

Alternative Part Number

  • BC856B --: PNP general-purpose transistor with comparable voltage and current ratings, widely available and pin-compatible in SOT-23.
  • 2N3906 --: Classic PNP switching transistor with similar electrical characteristics, though in TO-92 package requiring layout adjustment.
  • S8550 --: Low-cost PNP transistor with similar ratings, suitable for general switching and amplification applications.
  • BC857BS --: Dual PNP transistor in SOT-363, same package and polarity as MMDT3906, widely available and electrically similar.
  • PMBT3906 --: Single PNP 40V transistor with comparable current and voltage ratings, suitable replacement where dual matching is not required.
  • SST3906 --: PNP transistor with similar Vceo and Ic ratings, commonly used as a cross-reference for 3906-type parts.

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