JFET VHF/UHF Amplifiers
NChannel -- Depletion
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
DrainGate Voltage
VDG
25
Vdc
Reverse GateSource Voltage
VGSR
25
Vdc
Drain Current
ID
30
mAdc
Forward Gate Current
IG(f)
10
mAdc
Total Device Dissipation @ TC = 25
C
Derate above 25
C
PD
350
2.8
mW
mW/
C
Operating and Storage Junction
Temperature Range
TJ, Tstg
65 to +150
C
ELECTRICAL CHARACTERISTICS
(TA = 25
C unless otherwise noted)
Characteristic
Symbol
Min
Typ
Max
Unit
OFF CHARACTERISTICS
GateSource Breakdown Voltage
(IG = 1.0
Adc, VDS = 0)
V(BR)GSS
25
--
--
Vdc
Gate Reverse Current
(VGS = 20 Vdc, VDS = 0)
(VGS = 20 Vdc, VDS = 0, TA = 100
C)
IGSS
--
--
--
--
1.0
0.2
nAdc
Adc
Gate Source Cutoff Voltage
(VDS = 15 Vdc, ID = 10 nAdc)
VGS(off)
2.0
--
6.0
Vdc
ON CHARACTERISTICS
ZeroGateVoltage Drain Current
(VDS = 15 Vdc, VGS = 0)
IDSS
8.0
--
20
mAdc
SMALLSIGNAL CHARACTERISTICS
Forward Transfer Admittance
(VDS = 15 Vdc, VGS = 0, f = 1.0 kHz)
yfs
4000
--
8000
m
mhos
Input Admittance
(VDS = 15 Vdc, VGS = 0, f = 400 MHz)
Re(yis)
--
--
1000
m
mhos
Output Admittance
(VDS = 15 Vdc, VGS = 0, f = 1.0 kHz)
yos
--
--
75
m
mhos
Output Conductance
(VDS = 15 Vdc, VGS = 0, f = 400 MHz)
Re(yos)
--
--
100
m
mhos
Forward Transconductance
(VDS = 15 Vdc, VGS = 0, f = 400 MHz)
Re(yfs)
3500
--
--
m
mhos
ON Semiconductort
Semiconductor Components Industries, LLC, 2001
May, 2001 Rev. 0
1
Publication Order Number:
2N5486/D
CASE 2911, STYLE 5
TO92 (TO226AA)
1
2
3
2N5486
1 DRAIN
2 SOURCE
3
GATE
2N5486
http://onsemi.com
2
ELECTRICAL CHARACTERISTICS
(TA = 25
C unless otherwise noted) (Continued)
Characteristic
Symbol
Min
Typ
Max
Unit
SMALLSIGNAL CHARACTERISTICS (continued)
Input Capacitance
(VDS = 15 Vdc, VGS = 0, f = 1.0 MHz)
Ciss
--
--
5.0
pF
Reverse Transfer Capacitance
(VDS = 15 Vdc, VGS = 0, f = 1.0 MHz)
Crss
--
--
1.0
pF
Output Capacitance
(VDS = 15 Vdc, VGS = 0, f = 1.0 MHz)
Coss
--
--
2.0
pF
f, FREQUENCY (MHz)
30
10
bis @ IDSS
f, FREQUENCY (MHz)
5.0
Figure 1. Input Admittance (yis)
Figure 2. Reverse Transfer Admittance (yrs)
COMMON SOURCE CHARACTERISTICS
ADMITTANCE PARAMETERS
(VDS = 15 Vdc, Tchannel = 25
C)
f, FREQUENCY (MHz)
20
f, FREQUENCY (MHz)
10
Figure 3. Forward Transadmittance (yfs)
Figure 4. Output Admittance (yos)
g is
, INPUT
CONDUCT
ANCE (mmhos)
20
10
0.3
0.5
0.7
1.0
2.0
3.0
5.0
7.0
20
30
50 70 100
200 300
500 700 1000
b is
, INPUT
SUSCEPT
ANCE (mmhos)
g fs
, FOR
W
ARD
TRANSCONDUCT
ANCE (mmhos)
|b
fs|, FOR
W
ARD SUSCEPT
ANCE (mmhos)
g rs
, REVERSE
TRANSADMITT
ANCE (mmhos)
b rs
, REVERSE SUSCEPT
ANCE (mmhos)
0.2
0.3
0.5
0.7
1.0
2.0
3.0
5.0
7.0
10
g os
, OUTPUT
ADMITT
ANCE (mhos)
b os
, OUTPUT
SUSCEPT
ANCE (mhos)
3.0
0.05
0.07
0.1
0.2
0.3
0.7
0.5
1.0
2.0
10
20
30
50 70 100
200 300
500 700 1000
10
20
30
50 70 100
200 300
500 700 1000
0.01
0.02
0.05
0.1
0.2
0.5
1.0
2.0
5.0
10
20 30
50 70 100
200 300
500 700 1000
bis @ 0.25 IDSS
gis @ IDSS
gis @ 0.25 IDSS
brs @ IDSS
0.25 IDSS
grs @ IDSS, 0.25 IDSS
gfs @ IDSS
|bfs| @ IDSS
|bfs| @ 0.25 IDSS
bos @ IDSS and 0.25 IDSS
gos @ IDSS
gos @ 0.25 IDSS
gfs @ 0.25 IDSS
2N5486
http://onsemi.com
4
f, FREQUENCY (MHz)
10
gig @ IDSS
f, FREQUENCY (MHz)
0.5
Figure 9. Input Admittance (yig)
Figure 10. Reverse Transfer Admittance (yrg)
COMMON GATE CHARACTERISTICS
ADMITTANCE PARAMETERS
(VDG = 15 Vdc, Tchannel = 25
C)
f, FREQUENCY (MHz)
f, FREQUENCY (MHz)
Figure 11. Forward Transfer Admittance (yfg)
Figure 12. Output Admittance (yog)
g ig
, INPUT
CONDUCT
ANCE (mmhos)
20
10
0.3
0.5
0.7
1.0
2.0
3.0
5.0
7.0
20 30
50 70 100
200 300
500 700 1000
b ig
, INPUT
SUSCEPT
ANCE (mmhos)
g fg
, FOR
W
ARD
TRANSCONDUCT
ANCE (mmhos)
b fg
, FOR
W
ARD SUSCEPT
ANCE (mmhos)
g rg
, REVERSE
TRANSADMITT
ANCE (mmhos)
b rg
, REVERSE SUSCEPT
ANCE (mmhos)
0.2
0.3
0.5
0.7
1.0
2.0
3.0
5.0
7.0
10
g og
, OUTPUT
ADMITT
ANCE (mmhos)
b og
, OUTPUT
SUSCEPT
ANCE (mmhos)
0.3
0.01
0.1
0.2
10
20
30
50 70 100
200 300
500 700 1000
10
20 30
50 70 100
200 300
500 700 1000
0.01
0.02
0.03
0.3
10
20
30
50 70 100
200 300
500 700 1000
big @ 0.25 IDSS
big @ IDSS
grg @ 0.25 IDSS
gfg @ IDSS
gfg @ 0.25 IDSS
brg @ 0.25 IDSS
bog @ IDSS, 0.25 IDSS
gog @ IDSS
gog @ 0.25 IDSS
0.2
0.005
0.007
0.02
0.03
0.05
0.07
0.1
0.05
0.07
0.1
0.2
0.5
0.7
1.0
brg @ IDSS
0.25 IDSS
gig @ IDSS, 0.25 IDSS
bfg @ IDSS
PDF 
ZIP
