The ONSEMI MMBT3904WT1G is a high-performance NPN bipolar junction transistor (BJT) designed for a wide range of applications, offering excellent versatility in electronic circuits. This small-signal transistor is housed in a compact SOT-323 package, making it ideal for space-constrained designs. It features a maximum collector current of 200 mA and a collector-emitter voltage of 40 V, ensuring robust performance in various low-power amplification and switching applications. With its reliable and efficient design, it is perfect for use in audio amplifiers, signal processing, and general-purpose switching circuits. The MMBT3904WT1G promises outstanding durability and reliability, conforming to RoHS standards, and is an essential component for both hobbyists and professional engineers seeking reliable transistor solutions in compact applications.