BFQ621 Datasheet, PDF (5/10 Pages) NXP Semiconductors – NPN 7 GHz wideband transistor

Philips Semiconductors
NPN 7 GHz wideband transistor
MEA260
Product specification
BFQ621
handbook, full pagewidth
VBB
input
75 Ω
10 nF
10 kΩ
10 nF
L1
L5
1 pF
L2 10 nF
240 Ω
L3
DUT
L4
L6
33 33
Ω
Ω
10 nF
VCC
4.7 µF
10 nF
output
75 Ω
1 pF
MEA260
L1 = 8 nH.
L2 = 15 nH, 2 turns copper wire, internal diameter 2 mm.
L3 = 10 nH, 2 turns copper wire, internal diameter 1.5 mm.
L5: Lp = 21 mm; Rc = 75 Ω.
L6: Lp = 16 mm; Rc = 75 Ω.
Fig.2 Intermodulation distortion and second order distortion MATV test circuit.
10
handbook, halfpage
fT
(GHz)
8
6
4
2
0
0
50
MLC991
100
150
200
I _C (mA)
V_CE = 18 V; f = 1 GHz.
Fig.3 Transition frequency as a function
of collector current; typical values.
1995 Sep 26
handbook², ^.h⁰alfpage
C _re
(pF)
1.5
MLC990
1.0
0.5
0
0
5
10
15
20
25
VCB (V)
I_C = 0; f = 1 MHz.
Fig.4 Feedback capacitance as a function of
collector-base voltage; typical values.
5