Vishay Phototransistor Optocouplers Deliver Accuracy and Energy Efficiency for Industrial Applications

Vishay Intertechnology introduced a new series of phototransistor optocouplers that combine a high and linear current transfer ratio (CTR) over temperature with a low forward current of 0.5 mA. Offering high temperature operation up to +125 °C in a choice of four packages - the DIL-4; long creepage LSOP-4; compact SOP-4; and half-pitch SSOP-4 - the Vishay Semiconductors VOx619A series is designed to deliver accuracy and energy efficiency in industrial applications.

Offering 50 % lower forward current than the previous-generation solution, the optocouplers released today reduce power consumption for more energy-efficient designs in micro mobility, industrial, energy metering, telecom, and consumer applications, in which they are optimized for signal transmission with galvanic and noise isolation in DC/DC converters, programmable controllers, and power supplies. They can also be used with devices that have limited current-driving capabilities, such as microcontrollers.

While CTR can drop to less than 50 % of the specified value at 25 °C for traditional optocouplers, it remains at > 75 % for the VOx619A series over its wide temperature range (more info).

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