BOJACK 200pcs High Quality Power Transistors Specifications: Product Name: 2N3904 Transistors Transistor Type:NPN Package Quantity: 200pcs Packed in A Rugged Convenient Re-sealable Plastic Storage Case. These Transistors have high dielectric strength.The current amplification factor of the transistor is related to the operating frequency. If the transistor exceeds its operating frequency range, the amplification capability will be reduced or even the amplification will be lost. 2N3904 transistor is widely used in product development, production, student experiments, maintenance,etc.