The BWSBF-12/18-5 from Sainty-Tech Communications Limited is a Switched Filter Bank with Frequency 12 to 18 GHz, Band 1 12 to 13 GHz, Band 2 13 to 14 GHz, Band 3 14 to 15 GHz, Insertion Loss 12 dB. Tags: Die. More details for BWSBF-12/18-5 can be seen below.