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140 COMMERCE DRIVE
MONTGOMERYVILLE, PA
18936-1013
PHONE: (215) 631-9840
FAX: (215) 631-9855
RF & MICROWAVE DISCRETE
LOW POWER TRANSISTORS
Features
• Silicon NPN, To-39 packaged VHF/UHF Transistor
• Specified 400 MHz, 28Vdc Characteristics
- Output Power = 1.0 Watt
- Minimum Gain = 10 dB
- Efficiency = 45%
• 800 MHz Current-Gain Bandwidth Product
2N3866 / 2N3866A
1. Emitter
2. Base
3. Collector
TO-39
DESCRIPTION:
Silicon NPN transistor, designed for VHF and UHF equipment. Applications include amplifier; pre-driver, driver, and
output stages. Also suitable for oscillator and frequency-multiplier functions.
ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C)
Symbol Parameter Value Unit
V
CEO
V
CBO
V
EBO
I
C
Collector-Emitter 30 Vdc
Collector-Base Voltage 55 Vdc
Emitter-Base Voltage 3.5 Vdc
Collector Current 400 mA
Thermal Data
P
D
Total Device Dissipation
Derate above 25ºC
5.0
28.6
Watts
mW/ ºC
MSC1067.PDF 3-10-99
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ELECTRICAL SPECIFICATIONS (Tcase = 25°C)
STATIC
(off)
Symbol Test Conditions Value
BVCER Collector-Emitter Breakdown Voltage
(IC = 5.0 mAdc, RBE = 10 ohms) 55 - - Vdc
BVCEO Collector-Emitter Sustaining Voltage
(IC=5.0 mAdc, IB=0) 30 - - Vdc
BVCBO Collector-Base Breakdown Voltage
(IE = 0, IC = 0.1 mAdc) 55 - - Vdc
BVEBO Emitter-Base Breakdown Voltage
(IE = 0.1 mAdc, IC = 0) 3.5 - - Vdc
ICEO Collector Cutoff Current
(VCE = 28 Vdc, IB = 0) - - 20
ICEX Collector Cutoff Current
(VCE = 55 Vdc, VBE = 1.5 Vdc) - - 100
2N3866 / 2N3866A
Min. Typ. Max. Unit
µA
µA
(on)
HFE DC Current Gain
VCE(sat) Collector-Emitter Saturation Voltage
DYNAMIC
Symbol Test Conditions Value
f
T
COB Output Capacitance
MSC1067.PDF 3-10-99
(IC = 360 mAdc, VCE = 5.0 Vdc) Both
(IC = 50 mAdc, VCE = 5.0 Vdc) 2N3866
(IC = 50 mAdc, VCE = 5.0 Vdc) 2N3866A
(IC = 100 mAdc, IB = 20 mAdc)
Current-Gain - Bandwidth Product
(IC = 50 mAdc, VCE = 15 Vdc, f = 200 MHz) 2N3866
2N3866A
(VCB = 30 Vdc, IE = 0, f = 1.0 MHz)
5.0
10
25
- -
Min. Typ. Max. Unit
500
800
-
-
-
-
800
-
2.8 3.5 pF
200
200
1.0 Vdc
-
-
MHz
-
-
-
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2N3866 / 2N3866A
FUNCTIONAL
Symbol Test Conditions Value
Min. Typ. Max. Unit
G
PE
Pout Output Power Test Circuit-Figure 1
η
C
Power Gain Test Circuit-Figure 1
Pin = 0.1 W, VCE = 28Vdc
f = 400 MHz, TC = 25 C
Pin = 0.1 W, VCE = 28Vdc
f = 400 MHz, TC = 25 C
Collector Efficiency Test Circuit-Figure 1
Pin = 0.1 W, VCE = 28Vdc
f = 400 MHz, TC = 25 C
10 - - dB
1.0
45
- - Watts
- - %
L
1
3-35
8-60
RFC
12
1000
VCE = -28V
P
IN
(RS=50 OHMS)
Figure 1 - 400 MHz RF AMPLIFIER CIRCUIT FOR GPE, P
8-60
RFC
RFC
5.6 OHMS
, AND EFFICIENCY SPECIFICATIONS.
OUT
L
S
0.9-7
P
OUT
(RL=50 OHMS)
L1: 2 TURNS No. 18 wire, ¼” ID, 1/8” long Ls: 2 ¾ TURNS No. 18 wire, ¼” ID, 3/16” long
Capacitor values in pF unless Tuning capacitors are air variable
otherwise indicated.
MSC1067.PDF 3-10-99
Page 4
.
Efficiency (%)
GPE Freq (MHz)
Freq (MHz)
Gu Max (dB)
IC max (
Package
Device
IC max (mA)
RF (Low Power PA / General Purpose) Selection
Pout
GPE (dB)
GPE VCC
BVCEO
Type
Packag
Device
Type
NF (dB)
NF IC (
NF VCE
GNF (dB)
Ftau (MHz)
Ccb
BVCEO
RF (LNA / General Purpose) Selection Guide
Low Cost RF Plastic Package Options
RF Low Power PA, LNA, and General Purpose Discrete Selector GuideRF Low Power PA, LNA, and General Purpose Discrete Selector Guide
2N3866 / 2N3866A
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)
MSC1067.PDF 3-10-99
Macro T
SO-8
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2N3866 / 2N3866A
MSC1067.PDF 3-10-99
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