BFQ72 Datasheet, PDF (6/14 Pages) Siemens Semiconductor Group – NPN Silicon RF Transistor (For low-distortion broadband amplifiers up to 2 GHz at collector currents from 10 mA to 30 mA.)

BFQ 72
Circles of constant noise figure F = f (ZS)
in ZS-plane, IC = 10 mA, VCE = 8 V,
f = 800 MHz
Noise figure F = f (IC)
Power gain G = f (IC)
VCE = 8 V, f = 800 MHz, ZLopt (G)