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Explosion-proof high-voltage optocoupler

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VISHAY Intertechnology, represented by Braemac , has announced the release of a new high-voltage optocoupler that meets the European Union's ATEX standard for operation in potentially explosive atmospheres.

Designed to enable galvanically separated circuits in environments including coal mines, chemistry labs, refineries, and mills, the new Vishay Semiconductors CNY65Exi consists of a phototransistor optically coupled to a gallium arsenide (GaAs) infrared-emitting diode in a four-lead, plastic package.

The CNY65Exi's optical components are mounted opposite one another, maintaining the highest safety standards with an input-to-output distance of >3 mm.

The device's specially moulded plastic package measures 17.8mm by 9.6mm with a height of 6.1mm. It features a pin index of 15.24mm and is designed for a J coupling system.

The new optocoupler features a current transfer ratio (CTR) range of 50% to 300%. The creepage current resistance of the isolation material according to VDE 0303/DIN 53480 is >475, and the isolation test voltage is 11.6kV. A very low typical coupling capacity of 0.3pF provides resistance to high-noise voltage.

In addition to meeting EU health and safety guidelines EN 50014:1997+A1+A2 and EN 50020:1994, the CNY65Exi is ATEX-certified (PTB 03 ATEX 2033 U) for explosive atmospheres according to the European guideline 94/9/EG and meets specifications for isolation material according to UL94-VO-flammability class. The device also meets test class 25/100/21 DIN 40045 requirements.

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