4N28/4N25 Opto Coupler IC

via Jaycar
$2.45
SKU TB-ZD1928
The 4N25, 4N26, 4N27 and 4N28 series of optocoupulers have a NPN silicon planar phototransistor optically coupled to a gallium arsenide diode. 

Specifications
Optocoupler Type Phototransistor optocoupler
Minimum Isolation Voltage 5300