TYPICAL CHARACTERISTICS
109
108
VDD = 50 Vdc
Pout = 125 W CW
107
106
105
104
90
110 130 150 170 190 210
TJ, JUNCTION TEMPERATURE (°C)
230 250
Note: The MTTF calculation for this graph is based on the thermal
resistance of the part using thermal grease TIM mounting.
MTTF calculator available at http://www.freescale.com/rf. Select
Software & Tools/Development Tools/Calculators to access MTTF
calculators by product.
Figure 12. MTTF versus Junction Temperature -- CW
VDD = 50 Vdc, IDQ = 1400 mA, Pout = 125 W Avg.
f
MHz
Zsource
Ω
Zload
Ω
860
1.14 + j0.88
2.61 + j1.84
Zsource = Test circuit impedance as measured from
gate to gate, balanced configuration.
Zload = Test circuit impedance as measured
from drain to drain, balanced configuration.
Input
Matching
Network
Device
+ Under
Test
Output
--
Matching
Network
--
Z source
+
Z load
Figure 13. Series Equivalent Source and Load Impedance
MRFE6VP8600HR6 MRFE6VP8600HR5 MRFE6VP8600HSR6 MRFE6VP8600HSR5
8
RF Device Data
Freescale Semiconductor