Product Name: IRF1404 Large Chip N-Channel MOSFET Color: Black + Silver Material: Plastic + Metal MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) is a type of field-effect transistor (FET) that controls current flow by varying the width of a conductive channel using a gate voltage. Charge carriers enter through the source and exit through the drain. The gate electrode—positioned between source and drain—is insulated from the channel by a thin oxide layer. MOSFETs operate in two modes: - Depletion Mode: Maximum channel conductance occurs with zero gate voltage; conductivity decreases as gate voltage increases. - Enhancement Mode: No channel exists at zero gate voltage; a conductive channel forms only when sufficient gate voltage is applied. Higher gate voltage increases conductivity. Package Contents: 5 pcs x MOSFET Note: Lighting conditions and screen settings may cause slight color variation between the image and the actual product. Measurement tolerance: ±1–3 cm.