ON Semiconductor 2SD1817 Bipolar Transistor

The ON Semiconductor 2SD1817 is a high-performance NPN bipolar junction transistor (BJT) designed for use in a wide range of electronic applications. This versatile component is recognized for its reliability and efficiency, making it an ideal choice for designers and engineers looking to build robust circuits in both commercial and industrial environments.

Key Features

• Type: NPN
• Collector-Emitter Voltage (Vceo): 80V
• Collector Current (Ic): 3A
• Power Dissipation (Pd): 25W
• DC Current Gain (hFE): 40 to 320
• Operating Junction Temperature (Tj): -55°C to +150°C
• Package: TO-220AB

Performance and Applications

The 2SD1817 transistor is designed to handle a collector current of up to 3A, which makes it suitable for moderate power switching and amplification tasks. With a collector-emitter voltage rating of 80V, it can comfortably operate in circuits with relatively high voltage requirements. The device also features a power dissipation capacity of 25W, allowing it to manage significant levels of energy without overheating.

The transistor's DC current gain range is quite broad, from 40 to 320, which provides flexibility in amplification applications, ensuring that it can be used in various configurations to meet specific circuit requirements. The operating junction temperature range of -55°C to +150°C ensures that the 2SD1817 remains operational across extreme temperature variations, which is crucial for industrial and automotive applications.

Housed in the robust TO-220AB package, the 2SD1817 ensures ease of mounting on printed circuit boards (PCBs) and is designed for optimal heat dissipation. This packaging is well-known for its durability and is commonly used for power transistors.

Typical applications for the ON Semiconductor 2SD1817 include power regulators, DC-DC converters, motor controls, and audio amplifiers. Its versatility and reliability make it a preferred choice for professionals seeking a high-quality component that delivers consistent performance across a range of electronic projects.