This is a simple, subminiature size, axial lead mounted rectifier diode. Often used for reverse voltage protection, the 1N4001 is a staple for many power, DC to DC step up, and breadboard projects. The 1N4001 is rated for up to 1A/50V.
Features
Rectification: Its primary function is to convert alternating current (AC) into pulsating direct current (DC), making it a staple in power supply circuits and AC adapters. Reverse Polarity Protection: It is commonly used as a protection device to prevent damage to sensitive components from accidentally connecting a power source incorrectly (reverse polarity). High Surge Capability: The diode can withstand a non-repetitive peak forward surge current of up to 30A for a short duration, which helps protect the circuit from sudden power fluctuations. Low Forward Voltage Drop: It has a relatively low forward voltage drop, typically around 0.7V to 1.1V when conducting current at 1A, minimizing power loss during operation. Low Leakage Current: When reverse-biased, the diode exhibits a very low reverse leakage current, typically only 5µA, ensuring efficient blocking of reverse voltage. Durable Package: It comes in a rugged, axial-lead DO-41 molded plastic case, which is corrosion-resistant and allows for easy through-hole mounting onto printed circuit boards or breadboards. Polarity Marking: The cathode (negative) terminal is clearly indicated by a colored (usually gray or silver) band on the body of the diode, which helps ensure correct installation.
Specification