Features: Designed to control the output loop current by regulating the electric field effect of the input loop. The control input terminal of the MOSFET requires a very low input voltage, resulting in high input resistance. Utilizes majority carriers for conduction, providing better temperature stability. The field effect transistor offers strong radiation resistance. Absence of shot noise caused by electron diffusion from random motion ensures low noise performance. Specification: Material: Electronic component Size: Approx. 1.5 x 3.5cm / 0.59 x 1.38in Color: Black Quantity: 1 Set Note: No retail packaging included. Please allow 01 cm error due to manual measurement. Ensure you are comfortable with this before purchasing. Due to differences in monitor displays, the actual color of the item may vary from the image. Package includes: 5 x Field Effect Tube