Signal diodes are small, fast-acting semiconductor diodes designed for low-current and low-voltage applications. Their main purpose is to process and control electronic signals rather than handle power. They can switch on and off very quickly, making them ideal for high-frequency circuits.
Signal diodes allow current to flow in one direction while blocking it in the opposite direction, helping to rectify, clip, clamp, or protect signals in electronic systems. Compared to power diodes, they have low forward voltage drop, low capacitance, and fast recovery time.