6N137#520

Optoisolators are components that use a combination of light and a photosensitive component to allow isolation of two circuits, so that one circuit’s electrical properties do not affect the other. They are most often used to prevent electrical interference from one circuit entering another. The 6N137#520 is a logic output optoisolator, and is used to transfer digital signals between two circuits with high levels of electrical integrity.

Characteristics of 6N137#520

The 6N137#520 contains a visible red LED and a photosensitive IC in a 14-pin DIP package. The LED has a minimum forward current of 4mA, a forward voltage of 1.6V, and a maximum reverse voltage of 6V. The IC is sensitive to light, with a sensitivity of 0.07 microamps per lumen. It also has a maximum off-current of 1nA, a minimum off-current of 0.02nA, and a maximum on-current of 1mA.

6N137#520 Application Field and Working Principle

The 6N137#520 is used in digital industrial process automation and instrumentation applications. Examples include motor and equipment control in factory automation systems, process monitoring in power plants, and building automation systems. It is also used in domestic and commercial lighting control systems.

The working principle of the optoisolator is based on the light-emitting diode (LED). When a voltage is applied across the LED, it emits light, and the light is detected by the photosensitive IC, which switches on. The combination of the two components creates a high-impedance path between the two circuits, preventing electrical interference from passing between them. The LED is configured to turn on when a digital signal is received, and the IC captures the light and switches on the transistor.

The 6N137#520 optoisolator is useful for applications that require electrical isolation between two circuits and accurate signal transfer without suffering from electrical interference. It is reliable, easy to use, and can be used in a wide range of industrial, commercial, and domestic applications.