The 1N4002-E3/4 is a standard, 1A continuous current-carrying, low-power, silicon-rectifier diode made by Vishay. It is designed for use in electronic applications such as general-purpose rectification, switching, and signal processing. It offers high surge capability at all temperatures, high surge current capability, low leakage current, and low forward voltage drop. It has an operating temperature of -55°C to +155°C and a storage temperature of -55°C to +175°C. It is coated in a tin-plated copper case with gold-plated copper terminals. The package size is DO-204AL (Axial Leaded).