1N4002

The 1N4002 is a general-purpose silicon rectifier diode in the 1N400x family. It is designed for low- to moderate-voltage rectification and is commonly used in power supplies, adapters, and other electronic circuits that require a simple one-way current path. The device is rated for an average rectified current of 1 A and a maximum reverse voltage of 100 V.

Electrical characteristics typical for the 1N4002 include a maximum repetitive reverse voltage (Vrwm) of 100 V, an average forward current (If(av)) of 1 A, and a peak surge current (Ifsm) of about 30 A for 8.3 ms (half-sine). The forward voltage drop is approximately 0.7 V at 1 A, and the junction temperature range is from -55 to 150 degrees Celsius. The diode is capable of being mounted in an axial package, typically a molded epoxy DO-41 style case.

Construction and packaging: The 1N4002 is a through-hole, axial-leaded diode packaged in a molded epoxy body. It has robust mechanical characteristics suitable for use on breadboards and in socketed or chassis-mounted circuits, and it is widely available from multiple manufacturers.

Applications and usage: This diode is widely used for rectification in low-voltage power supplies, polarity protection, and general purpose blocking in various consumer electronics and industrial equipment. It is often chosen for cost-effective, moderate-energy rectification tasks where voltage requirements are within its 100 V rating.

Variants and relation: The 1N4002 is one of the 1N400x family, with the primary difference among the versions being the reverse voltage rating. For example, the 1N4001 is rated for 50 V, the 1N4003 for 200 V, and so on. See also: 1N4001, 1N4003, 1N4004, and other 1N400x diodes.