What's the function of 1N4007 diode

What's the function of 1N4007 diode

1N4007 is a general-purpose silicon material rectifier diode, available in DO-41 package and SMA package. It is widely used in various AC-to-DC rectifier circuits, and can also be used in bridge rectifier circuits. Utilizing the unidirectional conductivity of the diode, the alternating current with alternating directions can be transformed into a pulsed direct current with a single direction.

First, understand the basic parameters of 1N4007 diode: 1N4007 rectifier diode maximum forward average rectification current: 1.0A; maximum reverse withstand voltage: 1000V; maximum forward peak surge current: 30A; forward voltage drop: 1.1V

Maximum reverse leakage current: 5.0uA.

1N4007 diodes are used as rectifier diodes: rectifier diodes are mainly various low-frequency half-wave rectifier circuits. If full-wave rectification is required, they must be connected into a rectifier bridge.

Usually it consists of a PN junction with anode and cathode terminals. The carriers in the P region are holes, and the carriers in the N region are electrons. When a positive voltage is applied to make the P region relative to the N region, it can pass a large current and have a low voltage drop (typical value 0.7V), which is called a forward conduction state. If the opposite voltage is applied, the reverse current is very small (reverse leakage current), which is called the reverse blocking state.

Silicon rectifier diodes have high breakdown voltage, low reverse leakage current, and good high temperature performance. Usually high-voltage and high-power rectifier diodes are made of high-purity single crystal silicon (it is easy to reverse breakdown when doped more). This kind of device has a large cross-sectional area and can pass a large current (up to thousands of amps), but the operating frequency is not high, generally below tens of KHz.