BFG25A Datasheet, PDF (6/12 Pages) NXP Semiconductors – NPN 5 GHz wideband transistor

NXP Semiconductors
NPN 5 GHz wideband transistor
Product specification
BFG25A/X
4
handbook, halfpage
F
(dB)
3
2
MCD145
f = 2 GHz
1 GHz
500 MHz
1
0
10^−1
1
10
IC (mA)
V_CE = 1 V.
Fig.10 Minimum noise figure as a function of
collector current; typical values.
4
handbook, halfpage
F
(dB)
3
2
1
MCD146
IC = 2 mA
1 mA
0.5 mA
0
10²
10³
10⁴
f (MHz)
V_CE = 1 V.
Fig.11 Minimum noise figure as a function of
frequency; typical values.
handbook, full pagewidth
1
0.5
0.2
+
j
0
–j
0.2
unstable ^region
0.2
0.5
1
MSG
15.6 dB
14 dB
12 dB
2
6 dB
4 dB
2.5 dB
5 ^stability
circle
10
2
5 1_*0
∞ OPT
Fmin = 1.9 dB
10
5
0.5
2
1
MCD147
I_C = 1 mA; V_CE = 1 V; f = 500 MHz; Z_O = 50 Ω; Maximum stable gain = 15.6 dB; F_min = 1.9 dB; Γ_opt = 0.85, 5°; R_n/50 = 2.4.
Fig.12 Common emitter noise figure circles; typical values.
Rev. 04 - 27 November 2007
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