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Motorola Electronic Components Datasheet



J308

(J308 / J309) JFET VHF/UHF AMPLIFIERS



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J308 pdf
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MOTOROLA
SEMICONDUCTOR TECHNICAL DATA
Order this document
by J308/D
JFET VHF/UHF Amplifiers
N–Channel — Depletion
3
GATE
1 DRAIN
J308
J309
J310
Motorola Preferred Devices
2 SOURCE
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Drain – Source Voltage
Gate–Source Voltage
Forward Gate Current
Total Device Dissipation @ TA = 25°C
Derate above 25°C
VDS
VGS
IGF
PD
25 Vdc
25 Vdc
10 mAdc
350 mW
2.8 mW/°C
Junction Temperature Range
TJ – 65 to +125
Storage Temperature Range
Tstg – 65 to +150
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Characteristic
°C
°C
Symbol
OFF CHARACTERISTICS
Gate – Source Breakdown Voltage
(IG = –1.0 µAdc, VDS = 0)
V(BR)GSS
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
IGSS
VGS(off)
ON CHARACTERISTICS
Zero – Gate –Voltage Drain Current(1)
(VDS = 10 Vdc, VGS = 0)
J308
J309
J310
IDSS
Gate–Source Forward Voltage
(VDS = 0, IG = 1.0 mAdc)
VGS(f)
SMALL– SIGNAL CHARACTERISTICS
Common–Source Input Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
J308
J309
J310
Re(yis)
Common–Source Output Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
Re(yos)
Common–Gate Power Gain
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
v v1. Pulse Test: Pulse Width 300 µs, Duty Cycle 3.0%.
Gpg
Min
– 25
– 1.0
– 1.0
– 2.0
12
12
24
1
2
3
CASE 29–04, STYLE 5
TO–92 (TO–226AA)
Typ Max Unit
— — Vdc
— –1.0 nAdc
— –1.0 µAdc
Vdc
— – 6.5
— – 4.0
— – 6.5
mAdc
— 60
— 30
— 60
— 1.0 Vdc
mmhos
0.7 —
0.7 —
0.5 —
0.25 — mmhos
16 — dB
Motorola Small–Signal Transistors, FETs and Diodes Device Data
© Motorola, Inc. 1997
1



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J308 pdf
J308 J309 J310
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) (Continued)
Characteristic
Symbol
SMALL– SIGNAL CHARACTERISTICS (continued)
Common–Source Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
Re(yfs)
Common–Gate Input Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 MHz)
Re(yig)
Common–Source Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
gfs
Common–Source Output Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
gos
Common–Gate Forward Transconductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
gfg
Common–Gate Output Conductance
(VDS = 10 Vdc, ID = 10 mAdc, f = 1.0 kHz)
J308
J309
J310
gog
Gate–Drain Capacitance
(VDS = 0, VGS = –10 Vdc, f = 1.0 MHz)
Cgd
Gate–Source Capacitance
(VDS = 0, VGS = –10 Vdc, f = 1.0 MHz)
Cgs
FUNCTIONAL CHARACTERISTICS
Noise Figure
(VDS = 10 Vdc, ID = 10 mAdc, f = 450 MHz)
NF
Equivalent Short–Circuit Input Noise Voltage
(VDS = 10 Vdc, ID = 10 mAdc, f = 100 Hz)
en
Min
8000
10000
8000
Typ
12
12
13000
13000
12000
150
100
150
1.8
4.3
1.5
10
Max Unit
— mmhos
— mmhos
20000
20000
18000
250
µmhos
µmhos
µmhos
µmhos
2.5 pF
5.0 pF
— dB
nVń ǸHz
2 Motorola Small–Signal Transistors, FETs and Diodes Device Data



Part Number J308
Description (J308 / J309) JFET VHF/UHF AMPLIFIERS
Maker Motorola - Motorola
Total Page 8 Pages
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