An enclosure of Bulk is used to package the optical attenuator.This RF Attenuator is conveniently packaged in 0805 (2012 Metric), making it easy to ship abroad.
E-TA2012 4DB N5 Features
E-TA2012 4DB N5 Applications
There are a lot of Nidec Copal Electronics E-TA2012 4DB N5 Attenuators applications.