6N140A

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Possessing the properties of optical isolation, the 6N140A is an optoisolator in the form of a transistor, photovoltaic output. This optoisolator is mainly used in circuit breaker control, specifically, in the protection of high-voltage electrical connection for various kinds of circuits, such as those in automotive and industrial applications. Mounted on a printed circuit board, it utilizes both its photovoltaic output and transistor output to control the protection of a circuit breaker, whether it is an AC or DC circuit breaker. This is advantageous to connected appliances that may force the circuit breaker to trip because high current rush through the circuit while simultaneously ensuring that the installation remains electrically safe.

The 6N140A optoisolator consists of a phototransistor and a photo-emitting diode both sealed within a transparent plastic package. The photo-emitting diode is the optically isolated mechanism at work in this optoisolator. This component is used as the input and it emits light when activated. The phototransistor, on the other hand, is used as the output. When it receives light from the photo-emitting diode, it switches on the circuit that it is connected to. Thus filling the role of an electronic switch.

When operating, the 6N140A optoisolator provides an output when it is exposed to a minimum light energy of approximately 1070 µW/cm², with a current of up to 20mA when it is connected to a DC circuit breaker. Because the optoisolator is a voltage-controlled device, its output will be proportional to the voltage applied to it when connected to an AC circuit breaker. Other aspects such as dark current and isolation resistance are also taken into consideration to ensure optimum performance.

In addition to having circuit protection capabilities, the 6N140A also features high dielectric strength and provides signal isolation between the input and output. Its 6kV isolation resistance is suitable for various operating conditions, enabling the protection of the circuit breaker and the connected appliances at all times. Its small size and light weight are also convenient for various applications, including remote control, security alarms, and power tools.

The 6N140A optoisolator is an effective tool in the protection of circuit breakers. As a photovoltaic output and transistor output optoisolator, it functions as an electronic switch that is triggered when a light source is applied. Activating integrated photo-emitting diodes and phototransistors, it switches on the circuit to protect the connected appliances from danger. Furthermore, its dielectric strength, isolation resistance, small size, and light weight make it an ideal choice for a variety of circuit breaker protection requirements.

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