You can check with different sub-category of products, you may find a certain product in different sub-category because of its different characteristics.

For exg, you want to find a 2W 1550nm isolator, then you may look into "High power isolator" category to find it, you may also find it in "Minisize devices", needsize isolator sub-category.

Anyway, the simplest way is just input the keyword what you need in "Search"  TOP, then you can find it easily.