H11L13SD

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An optoisolator or photoelectric isolator uses a component called an LED (light-emitting diode) to transfer electrical signals between two isolated circuits, usually using light as the medium of transmission. Optoisolators are typically used to provide a measure of protection from high voltage or high-current signals. The H11L13SD optoisolator belongs to the class of optoisolators known as logic output, where the output is a simple logic signal, such as high or low, that can be decoded by the receiving circuit.

Overview

The H11L13SD is a 6-pin 12V logic output optoisolator featuring a GaAlAs LED, an integrated detector output voltage, and a tantalum IR protection diode. An onboard reverse-setup protection diode provides additional safety in the event of an incorrect connection. The optoisolator is rated to operate in temperatures range of -25C to +85C, with a power dissipation capability of 200mW.

Technical Details

The H11L13SD has a nominal CTR (current transfer ratio) of 400% at 17mA and the transfer current can range from 7mA to 29mA. The high-output current of the optoisolator is rated at 80mA at 25°C. This optoisolator can also withstand a voltage up to 36V and the input current is rated at 2mA max. It also has a response time of 4µs max and a guaranteed isolation voltage of 1,500Vrms.

Application Field

The H11L13SD optoisolator is typically used in motor-speed control, optical switches, level-sensor systems, industrial and medical instrumentation, automotive electronic systems, and digital systems. It is also used in applications that require signal isolation, especially where it’s either impractical or unsafe to establish a direct electrical connection.

Working Principle

The operation of an optoisolator is based on the basic principles of light transfer. The H11L13SD optoisolator consists of two parts – an LED component and a phototransistor – that are joined together in one package. The LED emits light when connected to a power source and is connected to the input of the optoisolator. The light generated by the LED is received by the phototransistor, which is connected to the output of the optoisolator. The received light is converted into an electrical signal that can be used as an input to another circuit. In this way, the optoisolator allows a signal or data to be passed from one isolated circuit to another without creating a direct electrical connection.

Conclusion

The H11L13SD optoisolator is an extremely versatile and useful device that offers many advantages. It provides a very high degree of electrical isolation, which makes it ideal for a wide range of applications. It also allows signals and data to be passed between isolated circuits without creating a direct electrical connection, which is an important safety feature.

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