The HJF-A-500 SQ from Crane Aerospace & Electronics is a Space Qualified Coupler with Frequency 5 MHz to 1 GHz, Coupling 3 dB, Power 1 W, Amplitude Balance 0.2 to 0.4 dB, Phase Balance ±2 to 4 Degrees. Tags: Surface Mount. More details for HJF-A-500 SQ can be seen below.