The 1N4001–1N4007 is a general-purpose silicon rectifier diode series housed in a DO-41 axial-lead package, designed for through-hole mounting. Rated at 1A forward current with reverse voltage ratings ranging from 50V (1N4001) to 1000V (1N4007), this series offers low forward voltage drop, strong surge current capability, and excellent reliability. Widely used in AC-DC rectification, power adapters, transformer secondary rectifiers, battery chargers, and LED drivers, it is an ideal choice for low to medium power rectifier applications.