The AC251 from Teledyne Microwave Solutions is a RF Amplifier with Frequency 10 to 200 MHz, Small Signal Gain 7 to 8 dB pk-pk, Gain Flatness ±0.6 to ±0.7 dB, Noise Figure 1.2 to 1.7 dB, Output Power 11.5 to 13.2 dBm. Tags: Drop-In, Power Amplifier. More details for AC251 can be seen below.