The 3668S series are super‑bright LEDs encapsulated in a 3 mm diameter epoxy package. They are offered in four pastel colors—red, green, yellow and orange—and are designed for back‑lighting with low‑current drive and quick response for pulsed operation.
The datasheet provides absolute maximum ratings, forward and peak current limits, reverse voltage, power dissipation, operating and storage temperature ranges, as well as detailed optical characteristics and performance graphs.