FODM3051R3

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The FODM3051R3 is a triac output type optocoupler, also known as an optoisolator. It provides a photocoupled interface between low voltage digital logic circuits and higher voltage AC or DC supply systems. The FODM3051R3 uses an infrared light-emitting diode (LED) on the input side that is optically coupled to a monolithic integrated circuit with an AC output switch on the output side. The optocoupler has an isolation barrier between the input and output sides, ensuring that signals can be safely transmitted between the two electrical circuits.

The FODM3051R3 is widely used in various applications, such as motor control, power supplies, lighting control, home appliances, industrial equipment, and automotive applications. It can be used to trigger high voltage AC or DC loads, such as AC motors. It has a high isolation voltage and wide input-output coupling capacitance range, making it a reliable and cost-effective solution for industrial processes.

The FODM3051R3 has a wide operational temperature range of -55°C to +125°C, making it suitable for a variety of challenging applications. The device works on an input-output voltage ratio of 1:100 and has an isolation voltage of 4.8 kV. The optoisolator has a nominal LED current rating of 5 mA, and a surge current rating of 15 mA. It has a response time of 350 ns max at 10 mA increasing to 1.2 ms max at 1 mA.

The working principle of the FODM3051R3 involves the conversion of an electrical signal on the input side into a light signal generated by the LED. The output side of the optocoupler consists of an integrated circuit which detects this light signal and triggers the AC output switch accordingly. This switch controls an AC or DC load connected to the output terminals. When the LED is in the “ON” state, current flows through the LED and is detected by the integrated circuit on the output side, triggering the AC switch. When the LED is in the “OFF” state, current does not flow through the LED and the AC output switch opens. This enables the device to safely control higher voltage and current AC or DC loads.

The FODM3051R3 is a reliable optoisolator with a wide range of applications. Its features of wide operational temperature range, high isolation voltage, wide input-output coupling capacitance range, and short response time makes it suitable for a wide range of industrial applications.

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