The BW1609 from Sainty-Tech Communications Limited is a Power Divider with Frequency 10 to 20 GHz, Insertion Loss 0.8 to 0.9 dB, Isolation 25 to 27 dB, Input Power 2 W, Return Loss Input 16 to 20 dB. Tags: Die. More details for BW1609 can be seen below.