The SGN2731-500H-R from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 2.7 to 3.1 GHz, Power 56.81 to 57.4 dBm, Power(W) 480 to 550 W, Power Gain (Gp) 11.8 to 12.4 dB, VSWR 10.00:1. Tags: Flanged. More details for SGN2731-500H-R can be seen below.