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Philips Semiconductors
VHF push-pull power MOS transistor
Class-AB operation
RF performance in CW operation in a common source push-pull test circuit. T
otherwise specified. R
GS
MODE OF OPERATION
CW, class-AB
Ruggedness in class-AB operation
The BLF278 is capable of withstanding a load mismatch corresponding to VSWR = 7:1 through all phases under the
following conditions: V
DS
2003 Sep 19
= 2.8
per section; optimum load impedance per section = 0.74 + j2 ; (V
f
(MHz)
225
= 50 V; f = 225 MHz at rated output power.
V
I
DS
DQ
(V)
(A)
50
2
0.5
13
Product Specification
= 25 C; R
= 0.15 K/W unless
h
th mb-h
P
G
L
p
(W)
(dB)
250
>14
typ. 16
BLF278
= 50 V).
DS
D
(%)
>50
typ. 55
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