PC3SD12NTZA

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Optoisolators - Triac, SCR Output

PC3SD12NTZA optoisolators are a type of optoelectronic component used in many industrial and home applications that require electrical isolation. They are designed to provide an end user with the ability to use a low input characteristic to manipulate the output current. PC3SD12NTZA optoisolators employ a gallium arsenide infrared LED and a silicon phototransistor as the active components. The input signal is an electric current from the attached circuitry and the output is a precise isolated voltage.

Application Field

The PC3SD12NTZA optoisolator is suitable for use in a wide variety of industrial and domestic applications where high isolation voltages are critical. Its various potential applications include industrial motor control systems, medical imaging systems, and power supplies for professional lighting. This optoisolator is also well-suited to applications like controlling of pump motors, solenoids, long-distance controlling of household appliances, and powering of lights from an input voltage of 25V AC/DC. Meanwhile, the relay contacts of this optoisolator specially designed with a broad range of complementary surfaces which allows for the connection of different wattage loadings.

Working Principle

The PC3SD12NTZA optoisolator combines a gallium arsenide LED and silicon phototransistor. Along with a built-in triac or SCR output, the PC3SD12NTZA allows the input and output grounds to be completely isolated from each other. As a result, the user does not have to worry about induction of noise or incorrect operation from other electrical components in the system. When current flows into the LED, the emitted light triggers the phototransistor to generate a voltage, which in turn activates the triac or SCR output. This output is used to control the current that supplies the load. The output is reverse biased from the power source in order to protect the found interface circuit from current overload. The optoisolator allows reliable switching of load current to create a pulse-width modulated effect, if required.

Overall, the PC3SD12NTZA optoisolator provides a convenient interface between an input signal voltage and a corresponding output current. It ensures timely control of the high voltage currents needed to control heavy loads with low input current. This optoisolator is perfect for applications where safety and protection from EMI interference are critical, such as motor and lighting control, and is ideal for the home as well as the industrial sector.

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