The VMMK-2503 from Broadcom is a RF Amplifier with Frequency 1 to 12 GHz, Gain 12.5 to 18 dB, Noise Figure 3.04 to 4.1 dB, Output Power 17 dBm, Output Power 0.05 W. Tags: Surface Mount, Gain Block, Power Amplifier. More details for VMMK-2503 can be seen below.