The FLM5964-18F from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 5.9 to 6.4 GHz, Power 42 to 43 dBm, Power(W) 15.85 to 19.95 W, P1dB 42 to 43 dBm, Power Gain (Gp) 9 to 10 dB. Tags: Flanged. More details for FLM5964-18F can be seen below.