LOC117S

Transistor, Photovoltaic Output Optoisolators Overview

The Littelfuse LOC117S is a single linear optocoupler featuring an infrared LED optically coupled with two photodiodes. One feedback (input) photodiode generates a control current proportional to the LED output, enabling closed-loop linearity correction. The second photodiode serves as the signal output channel. This architecture ensures high common-mode rejection and precise analog signal transmission across the isolation barrier in surface-mount configurations.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrated feedback photodiode for automatic linearity compensation
• Dual photodiode configuration for isolated signal transfer
• Infrared LED source for optical coupling

Transistor, Photovoltaic Output Optoisolators Applications

• Analog signal isolation in industrial control systems
• Linear voltage regulation feedback loops
• Precision measurement instrumentation requiring galvanic isolation

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'S' indicates the surface-mount package variant when sourcing. Confirm that the component matches the official Littelfuse datasheet specifications for pinout and isolation ratings. Ensure compatibility with automated placement equipment if used in high-volume manufacturing. Cross-reference part numbers with authorized distributors to avoid counterfeit components.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when closed-loop linearity is critical for analog signal integrity. The internal feedback mechanism reduces distortion compared to open-loop optocouplers. Consider the surface-mount form factor for compact PCB designs. Evaluate isolation voltage requirements against application standards before finalizing the design.

Transistor, Photovoltaic Output Optoisolators Part Context

The LOC117 belongs to Littelfuse's linear optocoupler family, designed for applications demanding high accuracy and stability. Unlike digital isolators or standard transistor-output optocouplers, this series utilizes photodiode-based feedback to maintain signal fidelity over temperature variations and aging.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Consult official Littelfuse documentation for direct cross-references. Generic replacements may lack the integrated feedback loop required for linear performance. Verify pin compatibility and isolation ratings before substituting.