Vishay low input current optocouplers

Vishay has released six low input current optocouplers with phototransistor output in the DIP-4, SSOP-4 half-pitch miniflat and SOP-4L long miniflat packages. The optocouplers provide isolation for human and equipment safety.

The VO617A and VO618A devices, available in the DIP-4 package, offer good high temperature performance and an isolation voltage of 5000 RMS for switch mode power supply applications. A current transfer ratio of 40 - 320% is achieved for the VO617A at input drive current of 5 mA and at 1 mA for the VO618A.

The optocouplers are optimised for AC adapter applications and are offered in a low-profile (2 mm) SOP-4L package with ≥ 8 mm creepage distance.

The VOS618A and VOS628A, in the small SSOP-4 package with an isolation voltage of 3750 RMS, are suitable for programmable logic controller and industrial automation applications. These devices have a CTR range of 63 - 320% at a low input drive current of 1 mA.

The lower input currents reduce the amount of heat generated and complement the industry's move to low power products.