The FLM5053-18F from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 5.0 to 5.3 GHz, Power 42 to 43 dBm, Power(W) 15.85 to 19.95 W, P1dB 42 to 43 dBm, Power Gain (Gp) 7.5 to 8.5 dB. Tags: Flanged. More details for FLM5053-18F can be seen below.