MMDT521LW Diode Transistor SMD 3-Pin Surface Mount Package – ON Semiconductor

MMDT521LW Overview

The MMDT521LW is a high-performance NPN transistor designed for general-purpose switching and amplification applications. Offering reliable operation with a maximum collector current of 150 mA and a collector-emitter voltage rating of 40 V, this device ensures efficient signal control in compact form factors. Its low noise and fast switching capabilities make it suitable for a broad range of industrial and consumer electronics circuits. Manufactured with consistent quality standards, the transistor supports robust performance in demanding environments. For sourcing and detailed technical support, visit IC Manufacturer.

MMDT521LW Technical Specifications

MMDT521LW Key Features

• High Gain Performance: Provides a DC current gain up to 300, enabling effective amplification in low-power circuits.
• Robust Voltage Ratings: Supports collector-emitter voltages up to 40 V, allowing use in a variety of switching applications with moderate voltage requirements.
• Compact TO-92L Package: Facilitates easy integration into space-constrained designs while maintaining thermal stability with a 300 mW power dissipation rating.
• Fast Switching Speed: The typical transition frequency of 100 MHz supports high-frequency signal processing and switching efficiency in communication and control circuits.

Typical Applications

• Used in signal amplification stages for analog and digital circuits, providing reliable gain and low noise in audio and sensor interfaces.
• Suitable for low-power switching applications such as driving relays, LEDs, and small motors in industrial control systems.
• Employed in voltage regulation and protective circuitry where moderate voltage and current handling is required.
• Ideal for educational and prototyping purposes due to its robust electrical characteristics and ease of handling.

MMDT521LW Advantages vs Typical Alternatives

This transistor offers a balanced combination of voltage rating, current capability, and gain, making it a versatile choice compared to typical alternatives. Its high transition frequency and low noise characteristics provide superior switching and amplification performance. The compact TO-92L package supports easy integration with efficient thermal management. Overall, it delivers reliable operation with consistent electrical parameters, which is critical for industrial-grade applications requiring stable and predictable transistor behavior.

MMDT521LW Brand Info

The MMDT521LW is produced by a reputable semiconductor manufacturer known for delivering reliable, cost-effective discrete components. This product line focuses on ensuring quality and consistency in transistor performance for industrial and consumer electronics. The transistor is widely distributed through global electronic component suppliers, supporting engineers and sourcing specialists with comprehensive datasheets and application notes. The brand prioritizes manufacturing excellence and adherence to international standards, making this transistor a trusted choice in the electronics design community.

FAQ

What is the maximum collector current rating of the transistor?

The transistor supports a continuous collector current of up to 150 mA. This rating ensures safe operation within its specified limits in switching and amplification applications without risk of damage or performance degradation.

Can this transistor be used for high-frequency applications?

Yes, the typical transition frequency of 100 MHz allows the device to operate effectively in high-frequency signal processing and fast switching circuits, making it suitable for communication and control system applications.

What package type does this transistor come in?