The SGC8598-200A-R from Sumitomo Electric Device Innovations is a RF Transistor with Frequency 8.5 to 9.8 GHz, Power 53 to 54 dBm, Power(W) 251.19 W, Power Gain (Gp) 9 to 10 dB, Power Added Effeciency 0.38. Tags: Flanged. More details for SGC8598-200A-R can be seen below.