The SGC8598-100A-R from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 8.5 to 9.8 GHz, Power 551 dBm, Power(W) 100 to 125.89 W, Power Gain (Gp) 9 to 10 dB, Power Added Effeciency 0.4. Tags: Flanged. More details for SGC8598-100A-R can be seen below.