The optical attenuator is packaged in Tape & Reel (TR) solid enclosure.The RF Attenuator comes in 0805 (2012 Metric) packaging, which makes it convenient to ship overseas.
E-TA2012 T 5DB N4 Features
E-TA2012 T 5DB N4 Applications
There are a lot of Nidec Copal Electronics E-TA2012 T 5DB N4 Attenuators applications.