4N32S(TA)

Optoisolators - Transistor, Photovoltaic Output

The 4N32S(TA) optoisolator is a photorelays product from Vishay Semiconductors. This is a transistor output optoisolator featuring photovoltaic output, a power on/off trimming capacitor and a high insulation voltage. This optoisolator is designed specifically for the purpose of providing superior performance in applications requiring an extremely high switching speed, typical in industrial control, power control, and audio/video signal switching processes.

Application Field

The 4N32S(TA) is best used in switches which require a short switching time in a wide variety of application fields. The optoisolator utilizes photovoltaic power, providing superior performance in applications requiring the highest switching speeds. The typical application fields for this product is industrial control, power control, and audio/video signal switching.

Working Principle

The 4N32S(TA) optoisolator utilizes photovoltaic power to operate. It works by transmitting light from the light source (an LED) via a photo-transistor which is externally located, and the LED illuminates the photo-transistor. This in turn triggers an input current flow, which is then used to create an output current by outgoing transistor action (5mA driving current).

The optoisolator works under the principles of photo-transistor technology. The light source (LED) transmits light to the photo-transistor, which is placed in the opposite side of the optoisolator package, converting the light into an electrical signal. The output is then processed through a switching transistor, resulting in a 5mA driving current. This current is used to activate a relay, voltage regulator, light indicator, or other external device.

The optoisolator also has a trimming capacitor for power on/off switching, which allows the device to remain in a powered state or power-off state without having to manually power on/off the device. This is a convenient feature that prevents the transistors from getting damaged due to power supply instability.

Conclusion

In conclusion, the 4N32S(TA) is a transistor output optoisolator from Vishay Semiconductors. It is specifically designed for applications requiring an extremely high switching speed, typically used for industrial control, power control, and audio/video signal switching. It utilizes photovoltaic power and has a power-on/off trimming capacitor for added convenience.