BAV21WS-7

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The BAV21WS-7 is a single-phase rectifier diode. It is designed for use in small-signal and high-speed switching applications. It is ideal for use in a variety of applications such as reverse battery protection, flyback protection, and power supply design. This diode is characterized by low forward voltage drop and fast reverse recovery time.

The BAV21WS-7 is a surface mounted device (SMD) that is available in an SOD-323 package. Its lead frame is made of copper with tin plating and it has a black mold compound material. This diode also has an epoxy package that is flame-retardant and halogen-free. The anode of the diode is marked with a white portion of the package body.

The operating temperature of the BAV21WS-7 is from -65°C to 175°C. The maximum reverse voltage (VRM) is 7V. The maximum peak repetitive forward current (IFRM) is 0.4A with a peak working voltage (VWM) of 6V. It also has a reverse current (IR) of 1 μA at 25°C.

The working principle of the BAV21WS-7 is based on the p–n junction diode which allows current to flow in one direction only. When a forward bias voltage is applied to the diode, the majority and minority carriers in the depletion region exchange energy and become free to move. This results in the formation of a population inversion which causes a depletion region to acquire a negative voltage. As a result, the current flows in the forward direction, and the voltage drop across the diode is minimal. On the other hand, when the reverse bias voltage is applied, the minority carriers are swept out, the depletion region increases and the current flow is blocked.

In the BAV21WS-7, the use of a highly efficient junction design reduces the amount of power required for current flow. This diode is used in automotive, aerospace, telcommunication, consumer, industrial and medical applications. In automotive applications, it can be used as an overvoltage protector, an ignition protect circuit switch, a starter motor, and an alternator rectifier circuit.

In aerospace applications, it can be used as an anti-parasitic spike suppression diode. In telecommunications applications, it is used as a high speed switch, while in consumer and industrial application, it is used as an ESD (Electrostatic Discharge) suppressor. In medical applications, it is used as X-ray protection diodes. Due to the low forward voltage drop of the diode and its fast reverse recovery time, it can be used in all these application fields.

In summary, the BAV21WS-7 is a rectifier diode designed for use in small-signal and high-speed switching applications. It is characterized by low forward voltage drop and fast reverse recovery time, making it suitable for a variety of applications. It is available in an SOD-323 package, with an operating temperature range of -65°C to 175°C, and a maximum reverse voltage (VRM) of 7V.

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