The SGFCF20T-D from Sumitomo Electric Device Innovations is a RF Transistor with Frequency DC to 3.7 GHz, Power 38 dBm, Power(W) 6.31 W, Saturated Power 40 to 41 dBm, Power Gain (Gp) 18.5 to 19.5 dB. Tags: Surface Mount. More details for SGFCF20T-D can be seen below.