S4PGHM3/87A

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S4PGHM3/87A is a type of MOS Gate Controlled Thyristor (GCT) mainly used for AC switch applications. It is a single diode rectifier type of device and is available in the TO-220, SOT-223, SMD package types. It is essentially a MOS gated diode, as opposed to its counterparts, the thyristor and the triac, which are both two diode rectifier devices.

The main parameter of the S4PGHM3/87A is its rated turn-on voltage, which is about 14.5V. This parameter is important for the operation of the device, since it is the voltage required for it to start conducting current. This turn-on voltage is also used to calculate the maximum power ratings of the device. Other parameters of the S4PGHM3/87A include its maximum non-repetitive peak pulse current, its leakage current and its maximum junction temperature.

The working principle of the S4PGHM3/87A involves a number of steps. First, the gate voltage is applied to the device. The voltage should be higher than the turn-on voltage of the device. At this point, the device has not started conducting current. Next, the voltage applied across the anode and cathode (the main terminals of the device) increases. This voltage overcomes the insulation of the device and allows current to flow through the device. As current passes through the device, the device gets charged up. This in turn causes the voltage across the device terminals to increase further, resulting in the device being permanently "turned on".

The major application areas of S4PGHM3/87A are in home appliances, including washing machines, microwave ovens and other large household appliances. It is also used in a wide range of industrial applications such as electric arc welding, automotive air conditioning and electric power tools. In addition, it is used in AC power controls for industrial automation, dimmers for lighting control and AC switch applications.

The S4PGHM3/87A is a reliable and robust device for AC switch applications. It has a wide range of useful features and is suitable for a range of industrial as well as home applications. Its turn-on voltage and maximum power ratings make it an ideal choice for many applications. In short, the S4PGHM3/87A can be regarded as an excellent choice for controlling AC power in various applications.

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