The FLM4450-25F from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 4.4 to 5.0 GHz, Power 43.5 to 44.5 dBm, Power(W) 22.39 to 28.18 W, P1dB 43.5 to 44.5 dBm, Power Gain (Gp) 8.5 to 9.5 dB. Tags: Flanged. More details for FLM4450-25F can be seen below.