MSC1308.PDF 10-25-99
BFR91
DESCRIPTION:
Designed primarily for use in high-gain, low noise, small-signal amplifiers. Also used in
applications requiring fast switching times.
ABSOLUTE MAXIMUM RATINGS
(Tcase = 25
C)
Symbol
Parameter
Value
Unit
V
CEO
Collector-Emitter Voltage
12
Vdc
V
CBO
Collector-Base Voltage
15
Vdc
V
EBO
Emitter-Base Voltage
3.0
Vdc
I
C
Collector Current
35
mA
Thermal Data
P
D
Total Device Dissipation @ TA = 60C
Derate above 60C
180
2.0
mWatts
mW/ C
Tstg
Storage Temperature
-65 to +150
C
R
JA
Total Device Dissipation @ TA = 60C
Derate above 60C
500
C/W
Macro T
(STYLE #2)
Features
High Current-Gain Bandwidth Product, fT = 5 GHz (typ) @ IC = 30 mA
Low Noise Figure NF = 1.9 dB (typ) @ f = 0.5 GHz, 2.5 dB (typ) @ 1GHz
High Power Gain Gmax = 16 dB (typ) @ f = 0.5 GHz, 10.9dB (typ) @ 1GHz
RF & MICROWAVE DISCRETE
LOW POWER TRANSISTORS
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
MSC1308.PDF 10-25-99
BFR91
ELECTRICAL SPECIFICATIONS (Tcase = 25
C)
STATIC
(off)
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
BVCEO
Collector-Emitter Breakdown Voltage
(IC = 1.0 mAdc, IB = 0)
12
-
-
Vdc
BVCB0
Collector-Base Breakdown Voltage
(IC = 0.1 mAdc, IE = 0)
15
-
-
Vdc
BVEBO
Emitter-Base Breakdown Voltage
(IE = 0.1 mAdc, IC = 0)
3.0
-
-
Vdc
ICBO
Collector Cutoff Current
(VCB = 5.0 Vdc, VBE = 0 Vdc)
-
-
50
nA
(on)
HFE
DC Current Gain
(IC = 30 mAdc, VCE = 5.0 Vdc)
25
-
250
-
DYNAMIC
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
Ftau
Current-Gain Bandwidth Product
(IC = 30 mA, VCE = 5.0 Vdc, f = 0.5 GHz)
-
5.0
-
GHz
CCB
Output Capacitance
(VCB = 10 Vdc, IE = 0, f = 1.0 MHz)
-
0.7
1.0
pF
MSC1308.PDF 10-25-99
BFR91
FUNCTIONAL
Symbol
Test Conditions
Value
Min.
Typ.
Max.
Unit
NF
Noise Figure
(IC = 2.0 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 2.0 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
-
1.9
2.5
-
dB
GNF
Power Gain at Optimum Noise Figure
(IC = 2.0 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 2.0 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
-
11
8.0
-
dB
|S
21
|
2
Insertion Gain
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
14.5
15.5
10.2
-
dB
MSG
Maximum Stable Gain
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
-
18.6
12.9
-
dB
G
U max
Maximum Unilateral Gain (1)
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
-
16.5
10.9
-
dB
Table 1. Common Emitter S-Parameters, @ VCE = 5.0 V, IC = 30 mA
f
S11
S21
S12
S22
(MHz)
|S11|
|S21|
|S12|
|S22|
100
0.258
-115
25.77
123
0.021
76
0.536
-33
200
0.290
-149
14.66
103
0.038
74
0.384
-43
300
0.298
-164
10.05
94
0.054
75
0.311
-45
500
0.305
-179
6.18
84
0.085
75
0.264
-49
700
0.302
170
4.5
77
0.117
73
0.256
-52
800
0.304
166
3.98
73
0.133
72
0.257
-54
1000
0.304
158
3.24
67
0.166
70
0.251
-57
1500
0.256
134
2.3
54
0.24
65
0.263
-69
MSC1308.PDF 10-25-99
BFR91
Efficiency (%)
GPE
Freq (MHz)
Freq (MHz)
Gu Max (dB)
IC max (
mA)
Package
Device
IC max (
mA)
RF (Low Power PA / General Purpose) Selection Guide
MA C R O X
MRF559
NPN 870
0.5
6.5
70
7.5
16
150
MA C R O X
MRF559
NPN 870
0.5
9.5
65 12.5 16
150
S O - 8
MRF8372,R1,R2
NPN 870 0.75
8
55 12.5 16
200
P O W ER MA C R O
MRF557
NPN 870
1.5
8
55 12.5 16
400
P O W ER MA C R O
MRF557T
NPN 870
1.5
8
55 12.5 16
400
MA C R O X
MRF559
NPN 512
0.5
10
65
7.5
16
150
MA C R O X
MRF559
NPN 512
0.5
13
60 12.5 16
150
T O - 3 9
2N3866A
NPN 400
1
10
45
28
30
400
S O - 8
MRF3866, R1, R2 NPN 400
1
10
45
28
30
400
P O W ER MA C R O
MRF555
NPN 470
1.5
11
50 12.5 16
400
P O W ER MA C R O
MRF555T
NPN 470
1.5
11
50 12.5 16
400
SO-8
MRF4427, R2
NPN 175 0.15
18
60
12
20
400
TO-39
2N4427
NPN 175
1
10
50
12
20
400
POWER MACRO
MRF553
NPN 175
1.5
11.5 60
12.5
16
500
POWER MACRO
MRF553T
NPN 175
1.5
11.5 50
12.5
16
500
TO-39
MRF607
NPN 175 1.75
11.5 50
12.5
16
330
TO-39
2N6255
NPN 175
3
7.8
50
12.5
18 1000
TO-72
2N5179
NPN 200
20
6
12
50
Pout (watts)
GPE (dB)
GPE VCC
BVCEO
Type
Package
Device
Type
NF (dB)
NF IC (
mA)
NF VCE
GN (dB)
Ftau (MHz)
Ccb
(
pF)
BVCEO
TO-39
2N5109
NPN 200
3
10
15
12
1200
3.5
20 400
TO-39
MRF5943C
NPN 200
3.4 30
15
11.4 1000
30 400
S O - 8
MRF5943, R1, R2 NPN 200
3.4 30
15
15
1300
30 400
TO-72
2N5179
NPN 200
4.5 1.5
6
17
900
1
12
50
TO-72
2N2857
NPN 300
5.5 50
6
13
1600
1
15
40
TO-39
MRF517
NPN 300
7.5 50
15
5.5
4600
3
25 150
T O - 7 2
M R F 9 0 4
N P N
4 5 0
1 . 5
5
6
1 1
4 0 0 0
1
1 5
3 0
T O - 7 2
2 N 6 3 0 4
N P N
4 5 0
5
2
5
1 4
1 4 0 0
1
1 5
5 0
M A C R O T
B F R 9 1
N P N
5 0 0
1 . 9
2
5
1 1
1 6 . 5 5 0 0 0
1
1 2
3 5
M A C R O T
B F R 9 6
N P N
5 0 0
2
1 0
1 0
1 4 . 5
5 0 0
2 . 6
1 5 1 0 0
S O - 8
M R F 5 8 1 2 , R 1 , R 2 N P N
5 0 0
2
5 0
1 0
1 5 . 5
1 7 . 8 5 0 0 0
1 5 2 0 0
M A C R O X
M R F 5 8 1 A
N P N
5 0 0
2
5 0
1 0
1 4
1 5
5 0 0 0
1 5 2 0 0
M a c r o
B F R 9 0
N P N
5 0 0
2 . 4
2
1 0
1 5
1 8
5 0 0 0
1
1 5
3 0
T O - 7 2
B F Y 9 0
N P N
5 0 0
2 . 5
2
5
2 0
1 3 0 0
1 5
5 0
T O - 7 2
M R F 9 1 4
N P N
5 0 0
2 . 5
5
1 0
1 5
4 5 0 0
1 2
4 0
M A C R O X
M R F 5 8 1
N P N
5 0 0
2 . 5
5 0
1 0
1 5
1 7 . 8 5 0 0 0
1 6 2 0 0
T O - 3 9
M R F 5 8 6
N P N
5 0 0
3
9 0
1 5
1 1
1 4 . 5 4 5 0 0
2 . 2
1 7 2 0 0
M A C R O X
M R F 9 5 1
N P N 1 0 0 0
1 . 3
5
6
1 4
1 7
8 0 0 0
0 . 4 5
1 0 1 0 0
M A C R O X
M R F 5 7 1
N P N 1 0 0 0
1 . 5
1 0
6
1 0
8 0 0 0
1
1 0
7 0
M A C R O T
B F R 9 1
N P N 1 0 0 0
2 . 5
2
5
8
1 1
5 0 0 0
1
1 2
3 5
M A C R O T
B F R 9 0
N P N 1 0 0 0
3
2
1 0
1 0
1 2 . 5 5 0 0 0
1
1 5
3 0
TO-39
MRF545
PNP
14
1400
2
70 400
TO-39
MRF544
NPN
13.5 1500
70 400
RF (LNA / General Purpose) Selection Guide
2
1
2
3
1
2
4
4
5
Macro X
Power Macro
Macro T
SO-8
RF Low Power PA, LNA, and General Purpose RF Discrete Selector Guide
MSC1308.PDF 10-25-99
BFR91
1.
2.
3.
PIN 1. COLLECTOR
2. EMITTER
3. BASE
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