SFH6916-- SOP-16, Half Pitch Mini-Flat Package eagle library needed
Sometimes, and especially with low-volume niche products, there isn't an existing Eagle library for a part, and you need to create your own. It isn't difficult; sometimes you can find a different part with the same footprint (SOIC-16 is actually pretty common) and create a new schematic symbol for it. Otherwise, you can create a new library from scratch; all of the details you need are in the datasheet.