AB817B-B

Transistor, Photovoltaic Output Optoisolators Overview

The AB817B-B is a single-channel surface-mount photocoupler manufactured by Kingbright. It integrates a Gallium Arsenide (GaAs) infrared emitting diode with an NPN silicon phototransistor within a compact four-lead SMD package. The device provides electrical isolation between input and output circuits via optical transmission. Key electrical specifications include a maximum collector-emitter saturation voltage, a reverse voltage rating of 9V for the LED, and a total power dissipation capability of 200mW. The unit supports an isolation voltage of 5kVrms and delivers a maximum output current of 50mA.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates GaAs infrared LED with NPN silicon phototransistor for signal transmission across isolated barriers
• Provides high-voltage electrical isolation rated at 5kVrms between input and output circuits
• Designed for surface-mount technology applications utilizing a compact four-lead SMD package

Transistor, Photovoltaic Output Optoisolators Applications

• Signal isolation in general-purpose electronic circuits
• Interface circuits requiring galvanic separation between control and load sides
• Switching applications involving low-power signal transmission

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify that the specific order matches the AB817B-B part number to ensure correct surface-mount packaging and lead configuration. Confirm that the required isolation voltage and output current ratings align with the system design constraints before finalizing procurement. Ensure compatibility with standard reflow soldering profiles for SMD components.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when a surface-mount form factor is required for single-channel optoisolation. Consider the 50mA output current limit and 5kVrms isolation rating against circuit requirements. Evaluate thermal management needs relative to the 200mW power dissipation specification during continuous operation.

Transistor, Photovoltaic Output Optoisolators Part Context

This component belongs to Kingbright's family of transistor-output optocouplers. It shares functional similarities with other models in the series but is distinguished by its specific surface-mount footprint and lead pitch. The device serves as a direct replacement for through-hole variants where board space optimization is necessary.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

The KB817-B is a documented alternative within the same product line. Verify pinout compatibility and package dimensions when substituting, as the through-hole variant differs from the surface-mount AB817B-B form factor.