The FLM0910-4F from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 9.5 to 10.5 GHz, Power 35.5 to 36 dBm, Power(W) 3.55 to 3.98 W, P1dB 35.5 to 36 dBm, Power Gain (Gp) 6.5 to 7.5 dB. Tags: Flanged. More details for FLM0910-4F can be seen below.