Optoisolators - Transistor, Photovoltaic Output

The SFH615A-4X017 Optoisolator is a transistor output, photovoltaic device designed for maximum transfer efficiency and very low power requirements. It enables the isolation of digital signals from the primary logic, eliminating the possibility of electrical noise interference. This device is suitable for a wide range of applications, including automation, measuring systems, and AC and DC resolvers.

Application Field

The SFH615A-4X017 Optoisolator is an effective device for isolating digital signals from the input stage of a signal processing chain. It forms an effective shield between the logic system and the input stage, enabling accurate data transmission without electrical interference. The device is especially useful with AC and DC resolvers, since it ensures accurate signal transmission with minimal electrical interference. It can also be used in process automation systems, such as factory automation and industrial robotics, to allow information to be reliably transmitted.

The device is suitable for use when a low-current, high-efficiency, and low-voltage signal is required. It is a good fit for the implementation of low-end digital equipment such as light switches, doorbells, smoke alarms, etc.

Working Principle

The SFH615A-4X017 Optoisolator works as a photovoltaic device, meaning it is activated by light. The device consists of two parts: the light-emitting diode (LED) and the integrated phototransistor. The LED generates a light signal that is received by the phototransistor and converted into a voltage signal (electric current). This voltage signal is used to control the primary logic system. In this way, the device avoids direct current leakage which can interfere with the primary logic system and cause errors in the data transmission.

On the other hand, the integrated phototransistor also reduces power consumption, since it needs low currents to function properly. This feature makes the SFH615A-4X017 Optoisolator an ideal device for low-voltage/low-power operations. Additionally, the device also features low ESD and EMI levels, making it particularly suitable for sensitive applications where EMI interference must be minimized.

Conclusion

The SFH615A-4X017 Optoisolator is a high-efficiency, low-voltage, photovoltaic Optoisolator suitable for isolating digital signals from the primary logic. It is an effective device for process automation, AC/DC resolvers, and low-end digital equipment applications. Additionally, its low power requirements and low ESD/EMI levels make it especially suitable for low-power and highly sensitive applications.