TTI - Low Input Current Optocoupler Offering Spans Multiple CTR Ranges

A new series of Vishay low input current optocouplers with phototransistor output can now be ordered from TTI. The VOS627A and VOS628A series optocouplers feature the compact SSOP-4 mini-flat package and 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 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. 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 systems, says the company.