H11F3 Optocoupler IC DIP 6 Package

H11F3 Optocoupler IC DIP 6 Package

The H11F3 is a photo-MOS (MOSFET output) optocoupler designed to provide electrical isolation between input and output while enabling analog signal transfer and high-linearity switching. Unlike conventional optocouplers that use phototransistors or photodiodes, the H11F3 features an N-channel MOSFET output stage controlled by an internal infrared LED.

This structure allows the H11F3 to handle AC or DC signals, support low on-resistance, and provide excellent linearity, making it ideal for applications requiring isolated analog signal control, variable resistance, or precise switching.

It offers high isolation voltage, low distortion, and reliable performance in industrial, communication, and instrumentation systems. The MOSFET output makes it suitable for applications that require low leakage, fast switching, and virtually no mechanical wear, unlike relays.

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Features

• Photo-MOS analog switch optocoupler
• N-channel MOSFET output stage
• Can switch AC or DC loads
• High isolation voltage (typically 5300 Vrms)
• Low on-resistance for efficient conduction
• High linearity and low signal distortion
• No mechanical contacts ? silent switching
• Fast switching speed compared to electromechanical relays
• Compact DIP-6 package
• Low input drive current due to infrared LED
• Excellent reliability and long service life

Applications

• AC/DC analog signal switching
• Audio signal isolation
• Industrial control systems
• Microcontroller-isolated analog interfacing
• Medical equipment (galvanic isolation)
• Telecommunication circuit isolation
• PLC input/output isolation
• Test and measurement equipment
• Sensor signal isolation
• Replacing small electromechanical relays
• Low-level switching applications
• Battery monitoring and protection circuits

H11F Datasheet

*Product image for illustration purposes only, actual product may vary.