PC3SD11NTZBF

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Optoisolators – Triac, SCR Output

Optoisolators, also known as optocouplers, are devices used to isolate two circuits, preventing electrical noise from one circuit to affect the other. The PC3SD11NTZBF optoisolator is a three-pin, two channel optoisolator from STMicroelectronics that combines an LED and a phototriac to switch AC loads in industrial and commercial applications.

The PC3SD11NTZBF optoisolator is housed in a single-in-line package and is available in a variety of isolation voltages ranging from 4kV to 25kV. It features a fast response time, up to one milli-second, and can be used with frequencies ranging from 50Hz to 400Hz. It has an output power up to 500 mW, a high noise immunity, and an operating temperature range of -50°C to +100°C.

The PC3SD11NTZBF optoisolator’s primary application field is in industrial and commercial applications where AC loads need to be switched, such as in HVAC, lighting, or refrigeration equipment. It can also be used for power supply devices, switch gear, and motion controllers.

The primary working principles of the PC3SD11NTZBF optoisolator is to provide electrical isolation between the input and output circuits. The device consists of a light-emitting diode (LED) and a phototriac. The LED emits light, which is detected by the phototriac, generating a trigger signal to turn on the output triac or SCR. This allows the output load to be switched in an isolated manner, preventing electrical noise from the input circuit to affect the output load.

The PC3SD11NTZBF optoisolator’s dual channel configuration also makes it ideal for switching two AC loads, either in parallel or independently. By connecting two of these devices in series, it is possible to switch a total of three AC loads.

In summary, the PC3SD11NTZBF optoisolator from STMicroelectronics is a three-pin, two channel optoisolator that features a fast response time, high noise immunity, and an extended operating temperature range, making it ideally suited for applications where AC loads need to be switched while providing isolation between the input and output circuits.

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