NPN Silicon RF Transistor
BFQ 70
ESD: Electrostatic discharge sensitive device, observe handling precautions!
Maximum Ratings
Type
Ordering Code
(tape and reel)
Marking
Package
1)
Pin Configuration
BFQ 70
Q62702-F774
70
Cerex-X
1
2
3
B
E
C
4
E
Parameter
Symbol
Values
Unit
Collector-emitter voltage
V
CE0
15
V
Emitter-base voltage
V
EB0
2.5
Collector current
I
C
35
mA
Collector-emitter voltage,
V
BE
= 0
V
CES
20
Base current
I
B
4
Junction temperature
T
j
175
C
Ambient temperature range
T
A
65 ... + 175
Total power dissipation,
T
S
121 C
3)
P
tot
300
mW
Storage temperature range
T
stg
65 ... + 175
Thermal Resistance
Junction - ambient
2)
R
th JA
260
K/W
Junction - soldering point
3)
R
th JS
180
Collector-base voltage
V
CB0
20
1)
For detailed dimensions see chapter Package Outlines.
2)
Package mounted on alumina 16 mm
25 mm
0.7 mm.
3)
T
S
is measured on the collector lead at the soldering point to the pcb.
q
For low-noise IF and broadband amplifiers in
antenna and telecommunications systems at
collector currents from 2 mA to 20 mA.
q
Hermetically sealed ceramic package
q
HiRel/Mil screening available.
Electrical Characteristics
at
T
A
= 25 C, unless otherwise specified.
Unit
Values
Parameter
Symbol
min.
typ.
max.
DC Characteristics
V
Collector-emitter breakdown voltage
I
C
= 1 mA,
I
B
= 0
V
(BR)CE0
15
A
Emitter-base cutoff current
V
EB
= 2 V,
I
C
= 0
I
EB0
10
DC current gain
I
C
= 3 mA,
V
CE
= 6 V
I
C
= 10 mA,
V
CE
= 6 V
h
FE
50
50
130
250
nA
Collector-base cutoff current
V
CB
= 10 V,
I
E
= 0
I
CB0
50
V
Collector-emitter saturation voltage
I
C
= 20 mA,
I
B
= 1 mA
V
CEsat
0.1
0.4
Base-emitter voltage
I
C
= 10 mA,
V
CE
= 6 V
V
BE
0.78
BFQ 70
Electrical Characteristics
at
T
A
= 25 C, unless otherwise specified.
AC Characteristics
Unit
Values
Parameter
Symbol
min.
typ.
max.
Power gain
I
C
= 20 mA,
V
CE
= 6 V,
f
= 800 MHz,
Z
S
=
Z
Sopt
,
Z
L
=
Z
Lopt
G
pe
18
GHz
Transition frequency
I
C
= 3 mA,
V
CE
= 6 V,
f
= 200 MHz
I
C
= 20 mA,
V
CE
= 6 V,
f
= 200 MHz
f
T
3.6
2.7
5
Collector-emitter capacitance
V
CE
= 6 V,
V
BE
=
v
be
= 0,
f
= 1 MHz
C
ce
0.41
Output capacitance
V
CE
= 6 V,
V
BE
=
v
be
= 0,
f
= 1 MHz
C
obs
0.87
1.3
dB
Noise figure
I
C
= 3 mA,
V
CE
= 6 V,
f
= 10 MHz,
Z
S
= 75
I
C
= 4 mA,
V
CE
= 6 V,
f
= 800 MHz,
Z
S
= 50
F
0.9
1.5
1.2
pF
Collector-base capacitance
V
CB
= 6 V,
V
BE
=
v
be
= 0,
f
= 1 MHz
C
cb
0.46
0.6
Input capacitance
V
EB
= 0.5 V,
I
C
=
i
c
= 0,
f
= 1 MHz
C
ibo
2.2
Transducer gain
I
C
= 10 mA,
V
CE
= 6 V,
f
= 1 GHz,
Z
0
= 50
I
S
21e
I
2
13
mV
Linear output voltage
two-tone intermodulation test
I
C
= 20 mA,
V
CE
= 6 V,
d
IM
= 60 dB,
f
1
= 806 MHz,
f
2
= 810 MHz,
Z
S
=
Z
L
= 50
V
o1
=
V
o2
170
dBm
Third order intercept point
I
C
= 20 mA,
V
CE
= 6 V,
f
= 800 MHz
IP
3
27.5
BFQ 70
Total power dissipation
P
tot
=
f
(
T
A
*;
T
S
)
*Package mounted on alumina
Collector-base capacitance
C
cb
=
f
(
V
CB
)
V
BE
=
v
be
= 0,
f
= 1 MHz
Transition frequency
f
T
=
f
(
I
C
)
V
CE
= 6 V,
f
= 200 MHz
BFQ 70
Noise figure
F
=
f
(
Z
S
)
V
CE
= 6 V,
f
= 10 MHz
Common Emitter Noise Parameters
I
C
= 3 mA,
V
CE
= 6 V,
Z
0
= 50
I
C
= 5 mA,
V
CE
= 6 V,
Z
0
= 50
0.01
0.8
(
Z
S
= 150
)
1.2
f
opt
GHz
dB
dB
MAG
ANG
dB
dB
F
min
G
p
(
F
min
)
R
N
N
F
50
G
p
(
F
50
)
0.01
0.8
0.85
1.3
15.5
(
Z
S
= 100
)
79
12
0.19
1.1
1.5
14.8
0.28
BFQ 70
Circles of constant noise figure
F
=
f
(
Z
S
)
in
Z
S
-plane,
I
C
= 5 mA,
V
CE
= 6 V,
f
= 800 MHz
Noise figure
F
=
f
(
I
C
)
Power gain
G
=
f
(
I
C
)
V
CE
= 6 V,
f
= 800 MHz,
Z
Lopt
(
G
)
BFQ 70
Common Emitter Power Gain
Power gain
G
ms
, I
S
21e
I
2
=
f
(
I
C
)
V
CE
= 6 V,
f
= 200 MHz,
Z
0
= 50
Power gain
G
ms
, I
S
21e
I
2
=
f
(
I
C
)
V
CE
= 6 V,
f
= 800 MHz,
Z
0
= 50
Power gain
G
ms
, I
S
21e
I
2
=
f
(
I
C
)
V
CE
= 6 V,
f
= 500 MHz,
Z
0
= 50
Power gain
G
ma
, I
S
21e
I
2
=
f
(
I
C
)
V
CE
= 6 V,
f
= 1.5 GHz,
Z
0
= 50
BFQ 70
Power gain
G
ms
, I
S
21e
I
2
=
f
(
f
)
I
C
= 2 mA,
V
CE
= 6 V,
Z
0
= 50
Power gain
G
ma
,
G
ms
, I
S
21e
I
2
=
f
(
f
)
I
C
= 10 mA,
V
CE
= 6 V,
Z
0
= 50
Power gain
G
ma
,
G
ms
, I
S
21e
I
2
=
f
(
f
)
I
C
= 5 mA,
V
CE
= 6 V,
Z
0
= 50
Power gain
G
ma
,
G
ms
, I
S
21e
I
2
=
f
(
f
)
I
C
= 20 mA,
V
CE
= 6 V,
Z
0
= 50
BFQ 70
Common Emitter S Parameters
f
S
11
S
21
S
12
S
22
GHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.1
0.2
0.3
0.4
0.6
0.8
1.0
1.2
1.5
1.8
2.0
2.5
3.0
0.92
0.89
0.84
0.80
0.74
0.71
0.69
0.68
0.67
0.68
0.69
0.70
0.72
23
45
65
82
110
130
146
158
174
174
167
152
138
7.00
6.42
5.74
5.21
4.14
3.35
2.78
2.39
1.96
1.66
1.51
1.24
1.05
165
150
137
126
109
95
85
76
64
53
47
33
20
0.025
0.049
0.068
0.081
0.096
0.103
0.105
0.105
0.104
0.102
0.100
0.100
0.107
77
65
55
46
34
26
20
17
14
13
14
19
24
0.98
0.93
0.87
0.81
0.71
0.65
0.61
0.58
0.55
0.54
0.53
0.51
0.51
8
16
22
28
34
38
41
44
49
55
60
73
87
I
C
= 2 mA,
V
CE
= 6 V,
Z
0
= 50
S
11
,
S
22
=
f
(
f
)
I
C
= 2 mA,
V
CE
= 6 V,
Z
0
= 50
S
12
,
S
21
=
f
(
f
)
I
C
= 2 mA,
V
CE
= 6 V,
Z
0
= 50
BFQ 70
Common Emitter S Parameters (continued)
f
S
11
S
21
S
12
S
22
GHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.1
0.2
0.3
0.4
0.6
0.8
1.0
1.2
1.5
1.8
2.0
2.5
3.0
0.84
0.78
0.72
0.69
0.65
0.63
0.63
0.63
0.63
0.63
0.65
0.66
0.69
35
66
90
109
135
152
165
175
173
164
158
145
133
14.47
12.38
10.21
8.66
6.32
4.90
3.97
3.38
2.74
2.29
2.07
1.70
1.44
159
139
125
114
99
88
79
72
62
53
48
35
23
0.023
0.042
0.053
0.060
0.068
0.072
0.075
0.079
0.083
0.090
0.095
0.109
0.127
73
58
47
40
34
31
30
30
31
33
34
36
36
0.95
0.83
0.72
0.63
0.52
0.46
0.43
0.40
0.38
0.37
0.36
0.34
0.34
14
26
33
37
42
44
45
47
51
56
61
73
87
I
C
= 5 mA,
V
CE
= 6 V,
Z
0
= 50
S
11
,
S
22
=
f
(
f
)
I
C
= 5 mA,
V
CE
= 6 V,
Z
0
= 50
S
12
,
S
21
=
f
(
f
)
I
C
= 5 mA,
V
CE
= 6 V,
Z
0
= 50
BFQ 70
Common Emitter S Parameters (continued)
f
S
11
S
21
S
12
S
22
GHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.1
0.2
0.3
0.4
0.6
0.8
1.0
1.2
1.5
1.8
2.0
2.5
3.0
0.73
0.67
0.63
0.62
0.60
0.60
0.61
0.61
0.61
0.62
0.64
0.65
0.68
50
89
114
132
153
167
177
175
165
157
152
141
130
22.77
17.57
13.44
10.84
7.56
5.75
4.62
3.90
3.15
2.62
2.37
1.94
1.65
151
129
115
105
92
83
76
70
60
52
47
35
24
0.021
0.034
0.041
0.045
0.051
0.057
0.062
0.068
0.078
0.089
0.096
0.117
0.138
65
52
43
41
39
40
41
43
44
44
44
44
41
0.89
0.71
0.57
0.49
0.39
0.35
0.32
0.30
0.29
0.28
0.27
0.25
0.25
21
34
41
44
45
46
47
48
51
56
61
73
88
I
C
= 10 mA,
V
CE
= 6 V,
Z
0
= 50
S
11
,
S
22
=
f
(
f
)
I
C
= 10 mA,
V
CE
= 6 V,
Z
0
= 50
S
12
,
S
21
=
f
(
f
)
I
C
= 10 mA,
V
CE
= 6 V,
Z
0
= 50
BFQ 70
Common Emitter S Parameters (continued)
f
S
11
S
21
S
12
S
22
GHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.1
0.2
0.3
0.4
0.6
0.8
1.0
1.2
1.5
1.8
2.0
2.5
3.0
0.67
0.62
0.59
0.60
0.59
0.59
0.60
0.60
0.61
0.62
0.63
0.65
0.68
62
104
128
143
162
173
178
171
162
154
150
139
128
27.86
20.01
14.73
11.63
7.97
6.02
4.82
4.07
3.28
2.73
2.47
2.02
1.71
146
123
110
101
89
81
75
68
60
52
47
35
24
0.019
0.029
0.035
0.038
0.045
0.051
0.058
0.065
0.077
0.090
0.097
0.120
0.142
64
49
44
43
44
46
48
49
50
49
49
47
43
0.84
0.63
0.50
0.42
0.34
0.30
0.28
0.27
0.25
0.25
0.24
0.22
0.22
25
38
43
44
45
45
45
47
50
55
60
72
87
I
C
= 15 mA,
V
CE
= 6 V,
Z
0
= 50
S
11
,
S
22
=
f
(
f
)
I
C
= 15 mA,
V
CE
= 6 V,
Z
0
= 50
S
12
,
S
21
=
f
(
f
)
I
C
= 15 mA,
V
CE
= 6 V,
Z
0
= 50
BFQ 70
Common Emitter S Parameters (continued)
f
S
11
S
21
S
12
S
22
GHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.1
0.2
0.3
0.4
0.6
0.8
1.0
1.2
1.5
1.8
2.0
2.5
3.0
0.63
0.60
0.58
0.59
0.59
0.59
0.60
0.60
0.61
0.62
0.64
0.65
0.68
71
113
136
150
166
177
175
169
160
153
149
138
128
31.01
21.18
15.24
11.90
8.08
6.09
4.87
4.11
3.31
2.75
2.49
2.03
1.72
142
119
107
98
88
80
74
68
59
51
47
35
24
0.017
0.026
0.031
0.034
0.041
0.048
0.056
0.064
0.076
0.089
0.098
0.120
0.143
59
48
45
45
47
50
52
53
53
52
51
49
44
0.81
0.58
0.45
0.38
0.32
0.29
0.27
0.26
0.25
0.24
0.23
0.21
0.21
28
40
43
44
43
43
44
45
48
54
58
70
86
I
C
= 20 mA,
V
CE
= 6 V,
Z
0
= 50
S
11
,
S
22
=
f
(
f
)
I
C
= 20 mA,
V
CE
= 6 V,
Z
0
= 50
S
12
,
S
21
=
f
(
f
)
I
C
= 20 mA,
V
CE
= 6 V,
Z
0
= 50
BFQ 70
Common Emitter S Parameters (continued)
f
S
11
S
21
S
12
S
22
GHz
MAG
ANG
MAG
ANG
MAG
ANG
MAG
ANG
0.1
0.2
0.3
0.4
0.6
0.8
1.0
1.2
1.5
1.8
2.0
2.5
3.0
0.75
0.69
0.63
0.62
0.59
0.59
0.59
0.59
0.59
0.60
0.62
0.63
0.66
45
83
109
127
149
164
174
178
167
159
153
142
131
22.64
17.84
13.82
11.23
7.88
6.01
4.83
4.09
3.29
2.75
2.49
2.03
1.73
153
131
117
107
93
84
77
70
61
53
48
36
25
0.018
0.030
0.037
0.041
0.046
0.051
0.056
0.061
0.070
0.080
0.087
0.106
0.126
67
53
45
42
40
41
43
44
46
47
47
47
45
0.91
0.75
0.63
0.55
0.46
0.42
0.40
0.38
0.37
0.37
0.36
0.34
0.33
18
29
34
36
37
37
38
40
43
48
52
62
75
I
C
= 10 mA,
V
CE
= 10 V,
Z
0
= 50
S
11
,
S
22
=
f
(
f
)
I
C
= 10 mA,
V
CE
= 10 V,
Z
0
= 50
S
12
,
S
21
=
f
(
f
)
I
C
= 10 mA,
V
CE
= 10 V,
Z
0
= 50
BFQ 70
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