The FLM3135-18F from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 3.1 to 3.5 GHz, Power 42 to 43 dBm, Power(W) 15.85 to 19.95 W, P1dB 42 to 43 dBm, Power Gain (Gp) 9.5 to 10.5 dB. Tags: Flanged. More details for FLM3135-18F can be seen below.