The PDF-4E-250 SQ from Crane Aerospace & Electronics is a Power Divider with Frequency 10 to 500 MHz, Insertion Loss 1 to 1.2 dB, Isolation 25 to 28 dB, Input Power 1 W, Amplitude Balance 0.1 to 0.2 dB. Tags: Flatpack, Lumped Element Power Divider. More details for PDF-4E-250 SQ can be seen below.