PRF957 データシートの表示（PDF） - NXP Semiconductors.
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PRF957 Datasheet PDF : 16 Pages
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Philips Semiconductors
UHF wideband transistor
Product specification
PRF957
handbook4,0h0alfpage
Ptot
(mW)
300
MGS512
200
100
0
0
50
100
150
200
Ts (°C)
Fig.2 Power derating as a function of soldering
point temperature.
handbook1,2h0alfpage
hFE
80
MGS513
40
0
0
10
20
30
40
50
IC (mA)
VCE = 6 V.
Fig.3 DC current gain as a function of collector
current; typical values.
0.8
handbook, halfpage
Cre
(pF)
0.6
MGS514
0.4
0.2
0
0
4
8 VCB (V) 12
IC = 0; f = 1 MHz.
Fig.4 Feedback capacitance as a function of
collector-base voltage; typical values.
1999 Jul 23
handbook,1h0alfpage
fT
(GHz)
8
MGS515
6
4
2
0
0
10
20
30
40
IC (mA)
VCE = 6 V; fm = 1 GHz; Tamb = 25 °C.
Fig.5 Transition frequency as a function of
collector current; typical values.
5
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