Page 1
140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
RF & MICROWAVE DISCRETE
LOW POWER TRANSISTORS
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
BFR91
Macro T
(STYLE #2)
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
V
CBO
V
EBO
I
C
Collector-Emitter Voltage 12 Vdc
Collector-Base Voltage 15 Vdc
Emitter-Base Voltage 3.0 Vdc
Collector Current 35 mA
Thermal Data
P
Tstg
R
θJA
D
Total Device Dissipation @ TA = 60ºC
Derate above 60ºC
Storage Temperature
Total Device Dissipation @ TA = 60ºC
Derate above 60ºC 500 ºC/W
180
2.0
-65 to +150 ºC
mWatts
mW/ ºC
MSC1308.PDF 10-25-99
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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
BFR91
(on)
DYNAMIC
ICBO Collector Cutoff Current
(VCB = 5.0 Vdc, VBE = 0 Vdc) - - 50 nA
HFE DC Current Gain
(IC = 30 mAdc, VCE = 5.0 Vdc) 25 - 250
Symbol Test Conditions Value
Min. Typ. Max. Unit
Ftau Current-Gain – Bandwidth Product
(IC = 30 mA, VCE = 5.0 Vdc, f = 0.5 GHz)
CCB Output Capacitance
(VCB = 10 Vdc, IE = 0, f = 1.0 MHz)
-
-
5.0 - GHz
0.7 1.0 pF
-
MSC1308.PDF 10-25-99
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FUNCTIONAL
Symbol Test Conditions Value
Min. Typ. Max. Unit
Noise Figure
NF
GNF
|S21|
MSG Maximum Stable Gain
G
U max
(IC = 2.0 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 2.0 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
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)
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)
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 0.5 GHz)
(IC = 30 mAdc, VCE = 5.0 Vdc, f = 1.0 GHz)
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)
- 1.9
- 11
14.5 15.5
- 18.6
- 16.5
2.5
8.0
10.2
12.9
10.9
BFR91
- dB
- dB
- dB
-
-
dB
dB
Table 1. Common Emitter S-Parameters, @ VCE = 5.0 V, IC = 30 mA
(MHz) |S11|
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
∠ φ
MSC1308.PDF 10-25-99
|S21|
∠ φ
|S12|
∠ φ
|S22|
∠ φ
Page 4
BFR91
Efficiency (%)
GPE Freq (MHz)
Freq (MHz)
Gu Max (dB)
IC max (
Package
Device
IC max (mA)
RF (Low Power PA / General Purpose) Selection Guide
Pout (watts)
GPE (dB)
GPE VCC
BVCEO
Type
Package
Device
Type
NF (dB)
NF IC (
NF VCE
GN (dB)
Ftau (MHz)
Ccb
BVCEO
RF (LNA / General Purpose) Selection Guide
Macro X
Power Macro
RF Low Power PA, LNA, and General Purpose RF Discrete Selector Guide
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
MACRO X MRF559 NPN 512 0.5 10 65 7.5 16 150
MACRO X MRF559 NPN 512 0.5 13 60 12.5 16 150
TO-39 2N3866A NPN 400 1 10 45 28 30 400
SO-8 MRF3866, R1, R2 NPN 400 1 10 45 28 30 400
POWER MACRO MRF555 NPN 470 1.5 11 50 12.5 16 400
POWER MACRO MRF555T NPN 470 1.5 11 50 12.5 16 400
MACRO X MRF559 NPN 870 0.5 6.5 70 7.5 16 150
MACRO X MRF559 NPN 870 0.5 9.5 65 12.5 16 150
SO-8 MRF8372,R1,R2 NPN 870 0.75 8 55 12.5 16 200
POWER MACRO MRF557 NPN 870 1.5 8 55 12.5 16 400
POWER MACRO MRF557T NPN 870 1.5 8 55 12.5 16 400
mA)
(pF)
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
SO-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
TO-72 MRF904 NPN 450 1.5 5 6 11 4000 1 15 30
TO-72 2N6304 NPN 450 5 2 5 14 1400 1 15 50
MACRO T BFR91 NPN 500 1.9 2 5 11 16.5 5000 1 12 35
MACRO T BFR96 NPN 500 2 10 10 14.5 500 2.6 15 100
SO-8 MRF5812, R1, R2 NPN 500 2 50 10 15.5 17.8 5000 15 200
MACRO X MRF581A NPN 500 2 50 10 14 15 5000 15 200
Macro BFR90 NPN 500 2.4 2 10 15 18 5000 1 15 30
TO-72 BFY90 NPN 500 2.5 2 5 20 1300 15 50
TO-72 MRF914 NPN 500 2.5 5 10 15 4500 12 40
MACRO X MRF581 NPN 500 2.5 50 10 15 17.8 5000 16 200
TO-39 MRF586 NPN 500 3 90 15 11 14.5 4500 2.2 17 200
MACRO X MRF951 NPN 1000 1.3 5 6 14 17 8000 0.45 10 100
MACRO X MRF571 NPN 1000 1.5 10 6 10 8000 1 10 70
MACRO T BFR91 NPN 1000 2.5 2 5 8 11 5000 1 12 35
MACRO T BFR90 NPN 1000 3 2 10 10 12.5 5000 1 15 30
TO-39 MRF545 PNP 14 1400 2 70 400
TO-39 MRF544 NPN 13.5 1500 70 400
mA)
Macro T
MSC1308.PDF 10-25-99
SO-8
Page 5
BFR91
PIN 1. COLLECTOR
2. EMITTER
3. BASE
1.
2.
3.
MSC1308.PDF 10-25-99
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