PC3H712NIP1B

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Optoisolators are essential components for the electronic device or circuit. Generally speaking, they are divided into two main categories-Transistor, Photovoltaic Output and Phototransistor, Photocurrent Output. The PC3H712NIP1B is belong to the former one-Transistor, Photovoltaic Output.

PC3H712NIP1B is a compact optoisolator of GaAs infrared LED and Photovoltaic output transistor mounted in one package. It is suitable for properly designed applications where it is necessary to provide electrical isolation between the input and output circuitry. With its small size and high speed response, it provides a perfect solution for customers’ requirement.

The features of PC3H712NIP1B includes low current transfer ratio (CTR), non-zero voltage turn-on, and minimum isolation of 3,500 Vrms as well as high voltage isolation of up to 6,000Vrms. It also has a wide operating temperature range (from -50 to +125 degree Celsius) and a highly reliable mechanical design with glass sealing and lead-frame pin structure.

In terms of applications, the PC3H712NIP1B is widely used in power monitoring, security systems, computer peripherals, automotive electronics, and industrial automation processes as an electrical isolation device. It also can be used in photoelectric applications, such as transmissive sensing, proximity sensing, indoor lighting, and energy saving.

The working principle of PC3H712NIP1B is based on its construction. It contains two parts- a light-generating diode (LED) and a photovoltaic output photodiode enclosed in a single package. Due to its small size, the transfer ratio is very low, ranging from 9% to 12%. When the LED is excited with an external voltage, it emits light under the control of DC or AC current, and the photodiode will convert this light into electrical energy. Therefore, when the external voltage or electric current changes, the current transfer ratio of the optoisolator will also change accordingly, resulting in the output transistor being triggered.

In summary, the PC3H712NIP1B optoisolator is a high speed, low cost isolation device with good performance as well as high reliability. It is widely used in various fields, such as power monitoring, security systems, computer peripherals, automotive electronics, and industrial automation. And its working principle is based on the principle of the LED and photodiode conversion.

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