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J308

JFET VHF/UHF Amplifiers



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J308 pdf
J308
JFET VHF/UHF Amplifiers
NChannel — Depletion
MAXIMUM RATINGS
Rating
Drain Source Voltage
GateSource Voltage
Forward Gate Current
Total Device Dissipation
@ TA = 25°C
Derate above 25°C
Junction Temperature Range
Storage Temperature Range
Symbol
VDS
VGS
IGF
PD
TJ
Tstg
Value
25
25
10
350
2.8
65 to +125
65 to +150
Unit
Vdc
Vdc
mAdc
mW
mW/°C
°C
°C
http://onsemi.com
1
23
CASE 2911, STYLE 5
TO92 (TO226AA)
1 DRAIN
3
GATE
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic
OFF CHARACTERISTICS
Gate Source Breakdown Voltage
(IG = 1.0 μAdc, VDS = 0)
Gate Reverse Current
(VGS = 15 Vdc, VDS = 0, TA = 25°C)
(VGS = 15 Vdc, VDS = 0, TA = +125°C)
Gate Source Cutoff Voltage
(VDS = 10 Vdc, ID = 1.0 nAdc)
J308
J309
J310
ON CHARACTERISTICS
Zero Gate Voltage Drain Current(1)
(VDS = 10 Vdc, VGS = 0)
J308
J309
J310
GateSource Forward Voltage
(VDS = 0, IG = 1.0 mAdc)
Symbol
V(BR)GSS
IGSS
VGS(off)
IDSS
VGS(f)
Min
25
1.0
1.0
2.0
12
12
24
2 SOURCE
Typ Max
Unit
— — Vdc
1.0 nAdc
1.0 μAdc
Vdc
6.5
4.0
6.5
mAdc
— 60
— 30
— 60
— 1.0 Vdc
© Semiconductor Components Industries, LLC, 2006
August, 2006 Rev. 2
1
Publication Order Number:
J308/D



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J308 pdf
J308
Characteristic
SMALLSIGNAL CHARACTERISTICS
CommonSource Input Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
J308
J309
J310
CommonSource Output Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
CommonGate Power Gain
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
1. Pulse Test: Pulse Width v 300 μs, Duty Cycle v 3.0%.
SMALLSIGNAL CHARACTERISTICS (continued)
CommonSource Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
CommonGate Input Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
CommonSource Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
CommonSource Output Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
CommonGate Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
CommonGate Output Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
GateDrain Capacitance
(VDS = 0, VGS = 10 Vdc, f = 1.0 MHz)
GateSource Capacitance
(VDS = 0, VGS = 10 Vdc, f = 1.0 MHz)
FUNCTIONAL CHARACTERISTICS
Noise Figure
(VDS = 10 Vdc, ID = 10 mAdc, f = 450 MHz)
Equivalent ShortCircuit Input Noise Voltage
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 Hz)
Symbol
Min
Typ
Max Unit
Re(yis)
mmhos
— 0.7 —
— 0.7 —
— 0.5 —
Re(yos)
0.25
— mmhos
Gpg — 16 — dB
Re(yfs)
Re(yig)
gfs
gos
gfg
gog
Cgd
Cgs
— 12 — mmhos
— 12 — mmhos
μmhos
8000
— 20000
10000 — 20000
8000
— 18000
— — 250 μmhos
μmhos
— 13000 —
— 13000 —
— 12000 —
μmhos
— 150 —
— 100 —
— 150 —
— 1.8 2.5 pF
— 4.3 5.0 pF
NF — 1.5 — dB
en — 10 — nVń ǸHz
http://onsemi.com
2



Part Number J308
Description JFET VHF/UHF Amplifiers
Maker ON Semiconductor - ON Semiconductor
Total Page 6 Pages
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