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MOC3043 IC – Zero-Cross Optoisolator Triac Driver IC

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₹38.00 (excluding 18% GST)

25 In stock

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Description

The MOC3043 consists of an infrared LED optically coupled to a photodiode that drives a triac. When the LED is activated by an input signal, it emits infrared light, which is detected by the photodiode. This triggers the triac when the AC voltage waveform crosses zero, thereby reducing noise and protecting the load from excessive inrush currents.

Features

  • Zero-Crossing Triggering: The MOC3043 triggers the triac when the AC voltage waveform crosses zero. This reduces EMI and minimizes inrush currents, making it suitable for both inductive and resistive loads.
  • High Isolation Voltage: Provides electrical isolation of up to 7500 Vrms between the input and output sides, ensuring safe operation in high-voltage environments.
  • Lower Input Trigger Current: The MOC3043 requires an even lower LED trigger current compared to the MOC3041, making it more sensitive and easier to drive with low-power control circuits.
  • Compact DIP Package: Available in a 6-pin Dual Inline Package (DIP), making it easy to integrate into various circuit designs.
  • High dv/dt Immunity: The device is designed to handle high rates of voltage change (dv/dt) without false triggering, ensuring reliable operation in noisy electrical environments.

Specifications

  • Input Type: Infrared LED
  • Output Type: Photodiode driving a triac
  • Isolation Voltage: 7500 Vrms (minimum)
  • LED Trigger Current: 5mA (maximum)
  • Peak Repetitive Off-State Voltage (VDRM): 400V
  • On-State Current (IT): 100mA (maximum)
  • Critical Rate of Rise of Off-State Voltage (dv/dt): 10,000 V/μs
  • Zero-Crossing Voltage: ±20V
  • Package: 6-pin Dual Inline Package (DIP)
  • Operating Temperature Range: -40°C to +85°C

Applications

  • AC Power Switching: Used to control AC loads such as lighting, motors, and heating elements in industrial and consumer electronics.
  • Solid-State Relays (SSRs): A crucial component in solid-state relays, which offer faster and more reliable switching compared to mechanical relays.
  • Light Dimming Circuits: Employed in dimming applications to control the brightness of incandescent and resistive load lighting.
  • Motor Speed Control: Used in circuits designed to control the speed of AC motors, offering smooth and efficient control.
  • Home Automation: Integrated into smart home systems for controlling various household appliances and lighting with enhanced safety and precision.

Note

* Product Images are shown for illustrative purposes only and may differ from actual product

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