PMBT3904VS,115

The PMBT3904VS,115 is a NPN bipolar junction transistor (BJT) designed for general-purpose switching and amplification applications. It is part of the PMBT3904 series, which is widely used in various electronic circuits due to its reliability and performance characteristics.

Key Features:

1. Type: NPN Transistor
2. Package: The PMBT3904VS,115 is typically housed in a SOT-23 package, which is a small, surface-mount device (SMD) that allows for efficient use of space on printed circuit boards (PCBs).
3. Maximum Collector Current (Ic): The transistor can handle a maximum collector current of approximately 200 mA, making it suitable for low to moderate power applications.
4. Collector-Emitter Voltage (Vce): The maximum collector-emitter voltage is around 40 V, allowing it to operate in a variety of voltage environments.
5. Gain (hFE): The transistor exhibits a current gain (hFE) in the range of 100 to 300, depending on the collector current, which is beneficial for amplification purposes.
6. Transition Frequency (fT): The transition frequency is typically around 250 MHz, indicating its capability for high-frequency applications.
7. Thermal Characteristics: The PMBT3904VS,115 has a maximum junction temperature of 150°C, which provides a good thermal margin for operation in various environments.

Applications:

• Switching Circuits: The PMBT3904VS,115 is commonly used in switching applications where it can control larger currents with a smaller input signal.
• Amplification: It is suitable for audio and RF amplification due to its high gain and frequency response.
• Signal Processing: The transistor can be used in signal processing circuits, including oscillators and amplifiers.

Electrical Characteristics:

• Base-Emitter Voltage (Vbe): Typically around 0.7 V when in the active region.
• Power Dissipation (Pd): The maximum power dissipation is around 300 mW, which is important for thermal management in circuit design.

Pin Configuration:

In the SOT-23 package, the pin configuration is as follows:

• Pin 1: Base (B)
• Pin 2: Collector (C)
• Pin 3: Emitter (E)

Conclusion:

The PMBT3904VS,115 from Nexperia is a versatile and efficient NPN transistor suitable for a wide range of electronic applications. Its compact size, combined with its robust electrical characteristics, makes it a popular choice among engineers and designers for both prototyping and production.