Tape & Reel (TR) is the solid enclosure in which optical attenuator is packaged.As the RF Attenuator is packed in 0805 (2012 Metric), international shipping is convenient.
E-TA2012 T 4DB N6 Features
E-TA2012 T 4DB N6 Applications
There are a lot of Nidec Copal Electronics E-TA2012 T 4DB N6 Attenuators applications.