Vishay's low-current optocouplers offer multiple CTR ranges, now available from TTI


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Now available from TTI, VOS627A and VOS628A low input current optocouplers with phototransistor output from Vishay come in the compact SSOP-4 mini-flat package, and offer the flexibility to choose from variable transfer ratio (CTR) ranges. The optocouplers offer extensive CTR (current transfer ratio) ranges from 40% to 600%, low power dissipation, and a low input drive current down to 1mA. Available in several other package sizes including DIP-4, LSOP-4, SOP-4 and SSOP-4, the components in the SOP-4, SSOP-4 and LSOP-4 package are only 2mm high, making them ideal for applications with height constraints. Compared with the standard DIP-4 package, the devices in the smaller package sizes offer considerable board space savings, saving 60% board space in the SSOP-4 package and 30% in the SOP-4 package. Certified to UL, CSA, VDE, Fimko, and CQC safety standards and fully RoHS-compliant, as well as lead (Pb)-free, Vishay's new optocouplers benefit from an eco-friendly "green" compound. Main target applications are AC adapters, switch mode power supplies, programmable logic controllers, industrial controls, office equipment, telecom systems, Power on Ethernet, smart meters and solar. TTI