The IL351D is a high-performance optocoupler manufactured by Vishay. It consists of an infrared emitting diode (IRED) optically coupled to a silicon phototransistor. This optocoupler provides electrical isolation between the input and output circuits, making it ideal for applications where safety and noise immunity are critical. The IL351D offers a high current transfer ratio (CTR) and is available in various package options to suit different mounting requirements.

Applications

• Isolated switch mode power supplies
• Industrial control systems
• Digital logic inputs
• Microprocessor system interfaces
• Solid-state relays

Features

• High Current Transfer Ratio (CTR)
• High Isolation Voltage (typically 5 kV)
• Compact Package
• Industry Standard Pinout
• Operating temperature range: -55°C to +100°C
• RoHS compliant

Benefits

• Provides electrical isolation, protecting sensitive circuits from high voltages and transients.
• High CTR ensures efficient signal transfer with minimal power consumption.
• Compact package saves valuable board space.
• Industry-standard pinout simplifies design and integration.
• High isolation voltage enhances safety and reliability.

Additional Details

The IL351D optocoupler features a typical isolation voltage of 5000 Vrms. The current transfer ratio (CTR) varies depending on the specific part number suffix. It's commonly available in DIP and SMD packages. The device is designed for through-hole and surface mount configurations. It is often used in safety-critical applications due to its high isolation capabilities. Detailed electrical characteristics, such as CTR, isolation voltage, and switching speeds, can be found in the Vishay datasheet.