The SFH617A-4X016-D is a high-isolation, single-channel phototransistor optocoupler from Vishay. It consists of an infrared emitting diode (IRED) optically coupled to a silicon NPN phototransistor. This configuration provides electrical isolation between the input and output circuits, making it ideal for applications where safety and noise immunity are critical.

Applications

• Industrial Control Systems
• Power Supplies
• Telecommunications Equipment
• Medical Equipment
• Motor Control
• Digital Logic Inputs

Features

• High Isolation Voltage: Provides electrical isolation up to 5300 VRMS.
• CTR (Current Transfer Ratio): High CTR ensures efficient signal transfer.
• Low Saturation Voltage: Minimizes power dissipation in the output transistor.
• Fast Switching Speed: Suitable for high-frequency applications.
• Compact Package: Saves valuable board space.
• UL and VDE Approved: Meets stringent safety standards.

Benefits

• Enhanced Safety: Protects circuits and personnel from high voltages.
• Improved Noise Immunity: Isolates sensitive circuits from noise and interference.
• Reduced Ground Loops: Eliminates ground loop currents.
• Simplified Circuit Design: Provides a convenient interface between different voltage domains.
• Increased System Reliability: Protects against voltage transients and overcurrent conditions.

Additional Details

The SFH617A-4X016-D optocoupler is designed for applications requiring a high degree of electrical isolation. It is widely used in industrial control systems to isolate sensitive control circuits from high-voltage power circuits. The high CTR ensures efficient signal transfer, while the low saturation voltage minimizes power dissipation. The fast switching speed makes it suitable for applications requiring high-frequency signal transmission. The compact package allows for easy integration into densely populated circuit boards. The UL and VDE approvals ensure that the device meets stringent safety standards. The device is RoHS compliant. It finds common usage in switching power supplies for feedback control and safety isolation, isolating microcontroller outputs from external high voltage circuits, and in any environment requiring electrical separation for safety or performance reasons.