--- title: Optocouplers and Opto-Isolators url: https://www.broadcom.com/products/optocouplers description: Broadcom's optoelectronics are designed and manufactured to meet the stringent power isolation requirements of industrial applications. --- # Optocouplers and Opto-Isolators Optocouplers, also called opto-isolators, are semiconductor devices that isolate unwanted signals by physically separating high-voltage circuit systems from neighboring low-voltage systems. Broadcom delivers optocouplers that are designed and manufactured to meet the stringent power isolation requirements of industrial applications and offer the industry's leading common mode rejection (CMR) of up to 100kV/µs. Broadcom supplies high-reliability hermetic optocouplers for military use, galvanic isolation optocouplers for industrial applications, and optocouplers specifically designed to meet the insulation and reliability requirements for automotive-grade applications. **[Learn more](https://www.broadcom.com/info/go-with-opto)** - [Broadcom Optoisolation and Optical Sensor Products Selection Guide](https://docs.broadcom.com/docs/AV00-0254EN) - [Industrial Photo-MOSFET Relay and Photovoltaic Driver Products Selection Guide](https://docs.broadcom.com/docs/industrial-photo-mosfet-relay-and-photovoltaic-driver-products-selection-guide) - [Avago Optocouplers for Extended Temperature Industrial Applications](https://docs.broadcom.com/docs/AV00-0389EN) - [Fiber Optic and Isolation Solutions for Renewable Energy Applications](https://docs.broadcom.com/docs/AV00-0167EN) - [Smart Gate Drive Optocoupler with Integrated Flyback Controller](https://docs.broadcom.com/docs/AV00-0304EN) - [Analog Isolation using linearity optocouplers, HCNR201/200](https://docs.broadcom.com/docs/AV00-0291EN) - [Reduce IGBT Gate Drive Design Costs and Space](https://docs.broadcom.com/docs/AV00-0289EN) - [Optocoupler Upgrade Selection Guide](https://docs.broadcom.com/docs/AV00-0280EN) - [Optocouplers in Intrinsic Safety Apps](https://docs.broadcom.com/docs/AV00-0302EN) - [Voltage/Current Threshold Sensing Using Avago ACPL-K370 / K376 Optocouplers](https://docs.broadcom.com/docs/AV00-0310EN) ## [Automotive Optocouplers](https://www.broadcom.com/products/optocouplers/automotive) ![Optocouplers isolation automotive thumbnail image](https://www.broadcom.com/media/blt4ac44e0e6c6d8341/blt38e9ef55acbd4e92/6035482e6260773d197566ec/Optocouplers_isolation_automotive_thumbnail_image) Automotive-grade optocoupler gate drives, IPM interfaces and isolation amplifiers for automotive applications in electric vehicles. **Select Products** - [Digital Optocouplers](https://www.broadcom.com/products/optocouplers/automotive/digital-optocouplers) - [Isolated Gate Drive Optocouplers](https://www.broadcom.com/products/optocouplers/automotive/gate-drives) - [IPM Interfaces](https://www.broadcom.com/products/optocouplers/automotive/ipm-interfaces) - [Isolation Amplifiers and Modulators](https://www.broadcom.com/products/optocouplers/automotive/isolation-amplifiers-and-modulators) - [Optocoupler with transistor or MOSFET output](https://www.broadcom.com/products/optocouplers/automotive/optocoupler-with-transistor-or-mosfet-output) - [Non-Optical Isolators](https://www.broadcom.com/products/optocouplers/automotive/non-optical-isolators) ## [Hermetic Optocouplers](https://www.broadcom.com/products/optocouplers/hermetic) ![Optocouplers isolation hermetic category thumbnail image](https://www.broadcom.com/media/blt4ac44e0e6c6d8341/blt974790551b711c56/60354830f12d6c39e270d025/Optocouplers_isolation_hermetic_category_thumbnail_image) Hermetic optocouplers designed to withstand the harsh environments required by military and aerospace applications. **Select Products** - [Hermetic Digital Optocouplers](https://www.broadcom.com/products/optocouplers/hermetic/digital-optocouplers) - [AC-DC to Logic Interfaces](https://www.broadcom.com/products/optocouplers/hermetic/ac-dc-to-logic-interface) - [High-Speed Logic Gates](https://www.broadcom.com/products/optocouplers/hermetic/high-speed-logic-gates) - [IPM Interfaces](https://www.broadcom.com/products/optocouplers/hermetic/ipm-gate-drive-interfaces) - [Isolation Amplifiers](https://www.broadcom.com/products/optocouplers/hermetic/isolation-amplifiers) - [Hermetic Isolated Gate Drive Optocouplers](https://www.broadcom.com/products/optocouplers/hermetic/gate-drive) - [Power MOSFETs](https://www.broadcom.com/products/optocouplers/hermetic/power-mosfet) - [Transistor Outputs](https://www.broadcom.com/products/optocouplers/hermetic/transistor-output) ## [Industrial Plastic Optocouplers](https://www.broadcom.com/products/optocouplers/industrial-plastic) ![Optocouplers isolation industrial plastic thumbnail image](https://www.broadcom.com/media/blt4ac44e0e6c6d8341/blt45b86bb8be06082a/603548ea0ebd9d3ac9b3ebf5/Optocouplers_isolation_industrial_plastic_thumbnail_image) Galvanic isolation optocouplers include the smart current sensors, intelligent gate drivers, digital optocouplers, drivers for intelligent power modules, high temperature R²Coupler™ and other application-specific devices. **Select Products** - [Digital Optocouplers](https://www.broadcom.com/products/optocouplers/industrial-plastic/digital-optocouplers) - [IPM Interfaces](https://www.broadcom.com/products/optocouplers/industrial-plastic/ipm-interfaces) - [Isolation Amplifiers](https://www.broadcom.com/products/optocouplers/industrial-plastic/isolation-amplifiers) - [Industrial Plastic Isolated Gate Drive Optocouplers](https://www.broadcom.com/products/optocouplers/industrial-plastic/isolated-gate-drive-optocouplers) - [Sigma-Delta Modulators](https://www.broadcom.com/products/optocouplers/industrial-plastic/sigma-delta-modulators) - [Specific Function Optocouplers](https://www.broadcom.com/products/optocouplers/industrial-plastic/specific-function) - [Other Products](https://www.broadcom.com/products/optocouplers/industrial-plastic/other) ## [Reference Designs](https://www.broadcom.com/products/optocouplers/reference-designs) ![Reference Designs](https://www.broadcom.com/media/blt4ac44e0e6c6d8341/blt22ec769ee145b8df/6035471acdb8913b17615bc6/Reference_Designs_) **Select Products** - [IGBT](https://www.broadcom.com/products/optocouplers/reference-designs/igbt) - [SiC MOSFET](https://www.broadcom.com/products/optocouplers/reference-designs/sic-mosfet) - [Isolation Solutions](https://www.broadcom.com/products/optocouplers/reference-designs/isolation-solutions) - [GaN Transistor](https://www.broadcom.com/products/optocouplers/reference-designs/gan-transistor) ## Also of Interest - [Automotive Optocouplers](https://www.broadcom.com/products/optocouplers/automotive) - [Digital Optocouplers](https://www.broadcom.com/products/optocouplers/industrial-plastic/digital-optocouplers) - [IGBT](https://www.broadcom.com/products/optocouplers/reference-designs/igbt)