The ASL 2003M2 from Aelius Semiconductors is a Digital Phase Shifter with Frequency 3 to 4 GHz, Phase_Shift 0 to 360 Degree, Phase Step 5.625 Degree, Insertion Loss 5.5 dB, Control Voltage 5 V. Tags: Surface Mount. More details for ASL 2003M2 can be seen below.