The optical attenuator is packaged in Bulk solid enclosure.Due to its 0805 (2012 Metric) packaging, the RF Attenuator is convenient for international shipping.
E-TA2012 4DB N3 Features
E-TA2012 4DB N3 Applications
There are a lot of Nidec Copal Electronics E-TA2012 4DB N3 Attenuators applications.