The MGF4964BL from Mitsubishi Electric US, Inc. is a RF Transistor with Frequency DC to 20 GHz, Gain 11.5 to 13.5 dB, Noise Figure 0.65 to 0.90 dB, Supply Voltage 2 V, Operating Temperature -55 to 125 Degree C. Tags: Flanged. More details for MGF4964BL can be seen below.