Excellent Current Performance: The NPN PNP transistor assortment kit made of excellent standard materials and have high voltage resistance, fast switching speeds and excellent current performance. 840 Pieces in Total: This diode transistor set with 840 transistors in one package, there are a total of 24 types of crystal kits, each including 35 pieces, namely: 2N2222 2N3904 2N3906 2N5401 2N5551 A1015 C1815 C945 S8050 S8550 S9012 S9013 S9014 S9015 BC327 BC337 BC517 BC547 BC548 BC549 BC550 BC556 BC557 BC558, for all your needs. Easy to Take: The transistor assortment kit is well organized and comes with a transparent plastic box for easy storage and carrying. The storage box has compartments for each value of the transistor, making it easy to find the component you need. Low Power Consumption: This component kit has high inrush current transmission capacity, high temperature soldering, low power consumption and high efficiency. Wide Application: Our 840pcs transistors widely used in audio video, DIY electronics and vehicle maintenance projects, beginner circuit learning, laboratory electronics experiment, design and experiment circuit.