The WJA1021 from Qorvo is a RF Amplifier with Frequency 50 MHz to 4 GHz, Gain 16.7 dB, Noise Figure 5.6 dB, Output Power 19 dBm, Output Power 0.08 W. Tags: Surface Mount, Gain Block, Power Amplifier, Buffer Amplifier. More details for WJA1021 can be seen below.