The EL817S1(A)(TA)-F is a phototransistor optocoupler manufactured by Everlight Electronics. This four-pin device provides electrical isolation between the input and output circuits, using an infrared emitting diode (IRED) and a phototransistor. Signals are transferred optically, preventing direct electrical connection. The (A)(TA)-F likely indicates specific binning or testing parameters, and the -F signifies it's a lead-free component.

Applications

• Switching mode power supplies
• Programmable logic controllers (PLCs)
• Office automation equipment (e.g., copiers, printers)
• Motor control circuits
• Signal transmission in noisy environments

Features

• High isolation voltage: Ensures strong electrical isolation between input and output sides.
• Compact size: Suitable for high-density board layouts.
• Current transfer ratio (CTR): Indicates the efficiency of current transfer.
• Low saturation voltage: Improves output switching performance.
• Lead-free: Complies with RoHS environmental standards.

Benefits

• Enhances safety by providing electrical isolation between circuits.
• Reduces noise and interference in sensitive applications.
• Simplifies circuit design with isolated signal transmission.
• Protects control circuits from voltage spikes and surges.
• Offers reliable performance in various industrial and commercial applications.

Technical Specifications

The EL817S1(A)(TA)-F is characterized by its high isolation voltage (typically several kilovolts). The current transfer ratio (CTR) is specified within a given range, dependent on the specific bin. The collector-emitter saturation voltage is low for efficient operation. The device is packaged in a 4-pin DIP (Dual In-Line Package). Consult the Everlight datasheet for detailed electrical characteristics and operating conditions.