VOM617A-1T

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Optoisolators are electrical components that transfer electrical signals between two parts of circuits while maintaining electrical isolation between them. The VOM617A-1T Optoisolator is a products from Vishay that comes from the Transistor, Photovoltaic Output Optoisolator family.

The VOM617A-1T is a surface mount optoisolator that provides an electrical isolation of up to 1500V. The device itself is made up of a gallium arsenide infrared LED that is optically coupled to a USV phototransistor. The LED provides the light source that excites the phototransistor, which then turns on to provide a collect current of up to 10 mA. The maximum forward current for the LED is 40mA with a reverse voltage of 5V.

An application field for this optoisolator is isolating incoming voltage or data signals between a microcontroller or a control circuit and a sensor or other external device. It can also be used for voltage-level shift applications, as it can provide up to 1500V of isolation. This makes the VOM617A-1T a suitable isolation component for applications such as instrumentation, industrial automation, and automotive.

The working principle of the VOM617A-1T is based on the photovoltaic effect; when the infrared LED is energized by the control circuitry, it emits light towards the phototransistor, exciting electrons on the collector. This creates a conduction path between the LED and the phototransistor, allowing current to flow between the two components. The device can operate up to 110KHz and provides a typical CTR of 140%.

The VOM617A-1T is an excellent optoisolator for applications that require high voltage isolation. It is compact in size and can be easily mounted on a PCB, making it suitable for use in tight spaces. The working principle and application field for this optoisolator make it a great choice for projects requiring the transmission of data and voltage signals while also maintaining electrical isolation.

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