The FOD819W is a high-performance 4-Pin Full-Pitch Mini-Flat Package Phototransistor Optocoupler developed by ON Semiconductor. This optoelectronic device combines a high-speed phototransistor with a light-emitting diode (LED), encapsulated in a compact, surface-mountable package. It is designed to provide electrical insulation and signal transfer between two isolated circuits by using light as a means of communication, ensuring both safety and data integrity.

Key Features

• High Isolation Voltage: The FOD819W offers an excellent isolation voltage of 3750Vrms, making it suitable for applications requiring stringent electrical isolation.
• High Collector-Emitter Voltage: With a collector-emitter voltage (VCEO) of 70V, this optocoupler can handle a wide range of signal levels, providing versatility in various applications.
• Current Transfer Ratio (CTR): The device features a Current Transfer Ratio ranging from 50% to 600% at IF=5mA, VCE=5V, which ensures reliable signal transmission between the input and output.
• Speed: The FOD819W is known for its fast switching times, which are essential for high-speed signal transmission and critical in modern electronic applications.
• Temperature Range: It operates over a wide temperature range from -55°C to +110°C, making it suitable for industrial applications.
• Lead-Free and RoHS Compliant: The device is lead-free and RoHS compliant, meeting environmental standards and reducing hazardous waste.

Applications

The FOD819W is ideal for a variety of applications, including but not limited to:

• Power supply regulators
• DC-DC converters
• Signal transmission between systems of different potentials and impedances
• Computer peripheral interfaces
• Microprocessor system interfaces
• Audio signal interfacing

With its robust design and reliable performance, the FOD819W from ON Semiconductor is a preferred choice for designers looking to enhance system safety and signal integrity in their electronic designs.