Welcome to our shop! We offer a high-quality power transistor kit containing 10 different models: BC327 PNP, BC337 NPN, BC517 NPN, BC547 NPN, BC548 NPN, BC549 NPN, BC550 NPN, BC556 PNP, BC557 PNP, BC558 PNP. Each transistor model is clearly marked for easy identification, making it convenient to use. These transistors boast high dielectric strength, fast switching speed, high power dissipation, and excellent current performance. They're an excellent choice for DIY projects. Made from high-quality semiconductor material, these transistors offer stable performance. They are frequently used in various applications such as electric vehicles, smart home alarm monitoring, communication transmission, and electrical power supplies. The kit includes 200 transistors, with 20 pieces of each model. 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the goods, such as damage or incorrect quantity, please contact the seller immediately. We will do our best to provide you with satisfactory customer service.