The EL817S1(TU)-V is a general-purpose phototransistor optocoupler manufactured by Everlight Electronics. It consists of an infrared emitting diode optically coupled to a phototransistor. This configuration provides electrical isolation between the input and output circuits, making it ideal for applications requiring safety isolation or noise reduction.

Applications

• Power Supplies: Used for feedback control in switched-mode power supplies.
• Industrial Control Systems: Employed for isolating control signals in PLCs and motor drives.
• Telecommunications Equipment: Integrated into modems and network interfaces for signal isolation.
• Consumer Electronics: Utilized in audio and video equipment for ground loop isolation.
• Microcontroller Interfaces: Used to isolate sensitive microcontroller inputs from noisy external circuits.

Features

• High Isolation Voltage: Provides a high degree of electrical isolation between input and output.
• Compact Package: Small outline package (SOP) allows for high-density mounting on PCBs.
• Current Transfer Ratio (CTR): Offers a specified CTR range for predictable performance.
• Fast Switching Speed: Enables rapid signal transmission.
• RoHS Compliant: Complies with Restriction of Hazardous Substances directive.

Benefits

• Electrical Isolation: Prevents ground loops and protects sensitive circuits from voltage spikes.
• Compact Design: Saves valuable board space.
• Reliable Signal Transfer: Ensures accurate and consistent signal transmission.
• Fast Response Time: Enables high-speed data communication.
• Safety Compliance: Meets safety standards for electrical isolation.

Additional Details

The EL817S1(TU)-V features a collector-emitter voltage (VCEO) of 35V and an isolation voltage of 5000Vrms. The forward current (IF) is typically 50mA. The current transfer ratio (CTR) varies depending on the specific grade of the optocoupler. This optocoupler is commonly used for isolating digital and analog signals in various electronic applications. The (TU) indicates tape and reel packaging, while the -V suggests a specific CTR rank within the EL817 series. The operating temperature range is -30°C to +100°C. This optocoupler is a reliable and cost-effective solution for providing electrical isolation in a wide range of applications.