PC3SG21YIZ

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Optoisolators - Triac, SCR Output

Optoisolators are phototranistors, LEDs, and optocouplers packaged in a small device that carries signals from one circuit to another. The PC3SG21YIZ is the PC3SG optoisolator family’s triac and SCR output type. This optoisolator is a hybrid device consisting of a digital triac and an integrated circuit cavity filled with a photocoupler. It provides isolation between the high voltage control signal and the low voltage control signal, making it an ideal choice for applications that require signal isolation in electronics and power supplies.

PC3SG21YIZ Characteristics

The PC3SG21YIZ’s operating voltage measures between 50V and 300VAC, and between 40V and 300VDC. The on-state current is 50mA while the off-state voltage is 300V minimum. This optoisolator has a highly efficient light-emitting diode and a wide ambient temperature range. In addition, it has a high sensitivity of 18mW/mA and high CMR characteristics.

Application Field

The PC3SG21YIZ optoisolator is best suited for ac/dc converters, ac light dimmers, and ac motor control applications due to its isolation rating and low electrical noise sensitivity. It is also an excellent choice for copier circuit control, home automation applications, outside unit TV sets, with high EMI immunity and excellent heat, moisture, and mechanical shock resistance.

Working Principle

The main component of the PC3SG21Y73 optoisolator is a dual isolated triac. The triac is composed of a series of optical elements such as a phototransistor, a control circuit, a photo-diode, and an integrated circuit. When a voltage signal is applied between the anode and cathode terminals, the photocoupler isolates the signal and a light is emitted from the LED. The emitted light activates the modulated phototransistor control circuit and allows current to flow through the triac. The triac’s output signal is then fed to the circuit, which is regulated by the current and the voltage.

The PC3SG21Y73 is an effective optoisolator for power applications such as AC/DC converters and Motor Control. It is an ideal choice for applications requiring signal isolation in electronics and power supplies due to its robust isolation rating and low electrical noise sensitivity. The efficient light emitting diode and wide ambient temperature range make it a great choice for applications that require high performance optoisolation.

Conclusion

The PC3SG21Y73 optoisolator is a ideal choice for isolating signals in electronics and power supplies. It is a dual isolated triac with a low electrical noise sensitivity and highly efficient light-emitting diode. The device has wide ambient temperature ranges and can support high CMR characteristics. With its optoisolation features and high performance, the PC3SG21Y73 makes a great choice for AC/DC converters, AC light dimmers, and AC Motor Control applications.

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