The PDF-4A-100 from Crane Aerospace & Electronics is a Power Divider with Frequency 1 to 200 MHz, Insertion Loss 1 to 1.5 dB, Isolation 20 to 25 dB, Input Power 0.05 W, Amplitude Balance 0.2 to 0.4 dB. Tags: Flatpack, Lumped Element Power Divider. More details for PDF-4A-100 can be seen below.