Optocouplers

Optocouplers use light-based (optical) signal transmission to provide electrical galvanic isolation between circuits. They support reliable switching, feedback, control, and protection functions.

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Explore our semiconductor product portfolio, organized by category to help you quickly find the right solution for your design.

Phototransistors

Phototransistor optocouplers provide reliable signal isolation using a light-activated transistor output. They are widely used for switching, level shifting, and noise isolation.
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Photo buffer optocouplers combine optical isolation with digital buffering for fast, clean logic signal transfer. They help improve signal integrity in noisy environments.
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Additional function optocouplers integrate specialized features beyond basic signal isolation. These devices simplify system design for advanced monitoring, protection, and control functions.
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