0

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

10

1.0

-1

0.5

SINGLE PULSE

0.1

0.3

0.7

0.05

D = 0.9

Peak TJ = PDM x ZθJC + TC

Duty Factor D =

2

t2

t1

Note:

RECTANGULAR PULSE DURATION (seconds)

Figure 5. Maximum Effective Transient Thermal Impedance Junction-to-Case vs Pulse Duration

0

50

100

150

200

250

300

350

400

0

2

4

6

8

10

INPUT POWER (WATTS PEP)

Figure 6. P

Typical Performance Curves

Vdd=50V, Idq = 250mA,

Freq=150MHz

150MHz

VRF151G

175MHz

200MHz