MOC3021

Part points

• The MOC3021 is an optocoupler chip commonly used for isolating high-voltage circuits from low-voltage control circuits in applications such as dimmer switches, motor controls, and power supplies. It consists of a phototransistor and an infrared LED housed in a single package, providing electrical isolation while allowing for signal transfer. The MOC3021 is compatible with triac and SCR output circuits.

• Equivalent

  The equivalent products of MOC3021 chip are MOC3020, MOC3022, MOC3023, MOC3020-M, and MOC3020-TA. These are all opto-isolators used for controlling high voltage loads with low voltage input signals, typically in applications like lighting control, motor control, and power supplies.

• Features

  MOC3021 is an optically isolated TRIAC driver output solid-state device. It has a peak repetitive off-state voltage of 400V, an isolatio voltage of 5300V, an output current of 100mA, and a maximum input current of 60mA. It is commonly used for controlling AC power in industrial and consumer applications.

• Pinout

  MOC3021 is a 6-pin DIP optocoupler IC. Pin 1 is Anode, pin 2 is Cathode, pin 3 is No Connection, pin 4 is Anode, pin 5 is Cathode, and pin 6 is Anode. It is commonly used for interfacing low-voltage logic circuitry with high-voltage AC loads.

• Manufacturer

  MOC3021 is manufactured by Fairchild Semiconductor, an American semiconductor company that produces power management semiconductor devices. Fairchild Semiconductor specializes in designing and manufacturing a wide range of components, including power and signal path products for applications in various industries such as automotive, communications, consumer electronics, and industrial automation.

• Application Field

  MOC3021 is commonly used in applications such as solid-state relays, lighting control, motor control, and isolated AC switching circuits. It is often utilized in consumer electronics, industrial machinery, and power management systems where precise and reliable switching of AC loads is required.

• Package

  The MOC3021 chip is in a 6-SMD package type, in the SOP form, with a size of 4.80mm x 3.90mm. It is commonly used as an optocoupler for controlling AC power and signal isolation applications in electronic circuits.