Low input current optocouplers

According to Vishay, the new optocouplers provide exceptional isolation for human and equipment safety. The VO617A and VO618A devices, says Vishay, are available in the DIP-4 package, offer excellent high temperature performance and an isolation voltage of 5000V_RMS for switch mode power supply applications. A current transfer ratio (CTR) of 40% to 320% is achieved for the VO617A at input drive current of 5mA and at 1mA for the VO618A. Option 6 offers a creepage distance of = 8mm. The VOL617A and VOL618A optocouplers are offered in a low profile (2mm) SOP-4L package with = 8mm creepage distance and an isolation voltage of 5000 V_RMS. Optimised for AC adapter applications, the VOL617A and VOL618A have a CTR range of 40% to 320% at an input drive current of 5mA and 1mA respectively. The VOS618A and VOS628A, in the small SSOP-4 package with an isolation voltage of 3750V_RMS, are suited for programmable logic controller and industrial automation applications. These devices have a CTR range of 63% to 320% at a low input drive current of 1mA. The lower input currents reduce the amount of heat generated and complement the industry's move to lower power products. The VO617A, VO618A, VOL617A, and VOL618A optocouplers are manufactured using an eco-friendly 'green' molding compound. Samples and production quantities of the new optocouplers are available now, with lead times of six to eight weeks for large orders.