SFH617A-4X016

Optoisolators - Transistor, Photovoltaic Output

A SFH617A-4X016 optoisolator is an optoelectronic component that transfers electrical signals between two isolated circuits by using light. This optoisolator has a photovoltaic output, which is a transistor that carries out voltage and/or current amplification. The SFH617A-4X016 optoisolator is ideal for applications that require isolation between the input and output circuits.

The SFH617A-4X016 is primarily used to isolate a low-level, low-voltage input from a high-level, high-voltage output, thus protecting the input from erratic or high voltage. It is also used to avoid ground loops, interference, and noise, which could interfere with the input signal. It is ideal for signals that are sensitive to electrical noise and EMI/RFI signal interference.

SFH617A-4X016 Application Field

The SFH617A-4X016 optoisolator has some key advantages, making it suitable for use in audio applications, power supply loop control, stepper motor control, thermocouples, and high-voltage relay control. It is also suitable for signal transmission in harsh environments, where high temperatures, shock, vibration, EMI/RFI, and high shock and vibration levels are present.

The optical isolation of the SFH617A-4X016 enables electrical signals to pass through it without having an effect on the input signal. This makes it ideal for use in a wide range of industrial, consumer, and medical applications, including industrial sensors and lighting control, industrial and consumer remote controls, instrumentation, automotive applications, motor and servo control, industrial process control, medical instrumentation, and patient monitoring.

SFH617A-4X016 Working Principle

The SFH617A-4X016 optoisolator works by providing a physical barrier between the input and output sides of the circuit. It consists of an infrared LED (light) that is coupled to a photodiode (light detector). The infrared LED emits a signal of infrared light, which is then detected by the photodiode. This allows the input signal to pass through the optoisolator without being affected by any external electrical noise or EMI/MSI signals.

The signal is then amplified by a transistor located in the output portion of the optoisolator. The amplified output is then sent back to the input circuit, providing a fully isolated signal. This ensures that the input signal remains unaffected by any electrical noise or EMI signals present in the environment.

The SFH617A-4X016 optoisolator is designed to operate in an ambient temperature range of -55C to +125C and is rated to withstand up to 250VAC. The optoisolator has a response time of 10µs, making it suitable for an array of fast switching applications. The SFH617A-4X016 is suitable for use with TTL, LSTTL, CMOS, and PMOS logic.

The SFH617A-4X016 optoisolator provides superior electrical isolation and signal transmission performance for a wide range of industrial and consumer applications. It is capable of isolating and amplifying signals in an efficient and cost-effective manner, allowing for reliable signal transmission in harsh environments.