The FLM3135-12F from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 3.1 to 3.5 GHz, Power 40.5 to 41.5 dBm, Power(W) 11.22 to 14.13 W, P1dB 40.5 to 41.5 dBm, Power Gain (Gp) 10.5 to 11.5 dB. Tags: Flanged. More details for FLM3135-12F can be seen below.