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B-62 01/99
J310
N-Channel Silicon Junction Field-Effect Transistor
¥ Mixer
¥ Oscillator
¥ VHF/UHF Amplifier
Absolute maximum ratings at TA= 25¡C
Reverse Gate Source Voltage – 25 V
Reverse Gate Drain Voltage – 25 V
Continuous Forward Gate Current 10 mA
Continuous Device Power Dissipation 360 mW
TOÐ226AA Package
Dimensions in Inches (mm)
Pin Configuration
1 Drain, 2 Source, 3 Gate
Surface Mount
SMPJ310
At 25°C free air temperature: J310 Process NJ72
Static Electrical Characteristics Min Typ Max Unit Test Conditions
Gate Source Breakdown Voltage V
(BR)GSS
– 25 V IG= – 1 µA, VDS= ØV
Gate Reverse Current I
GSS
– 1 nA VGS= – 15V, VDS= ØV
– 1 µA VGS= – 15V, VDS= ØV TA= + 125°C
Gate Source Cutoff Voltage V
GS(OFF)
– 2 – 6.5 V VDS= 10V, ID= 1 nA
Gate Source Forward Voltage V
GS(F)
1VVDS= ØV, IG= 1 mA
Drain Saturation Current (Pulsed) I
DSS
24 60 mA VDS= 10V, VGS= ØV
Dynamic Electrical Characteristics
Common Source Forward Transconductance g
fs
8000 17000 µS VDS= 10V, ID= 10 mA f = 1 kHz
Common Source Output Conductance g
os
250 µS VDS= 10V, ID= 10 mA f = 1 kHz
Common Gate Forward Transconductance g
fg
1200 µS VDS= 10V, ID= 10 mA f = 1 kHz
Common Gate Output Transconductance g
og
150 µS VDS= 10V, ID= 10 mA f = 1 kHz
Gate Drain Capacitance C
dg
1.8 2.5 pF VDS= ØV, VGS= – 10V f = 1 MHz
Gate Source Capacitance C
gs
45pFVDS= ØV, VGS= – 10V f = 1 MHz
Equivalent Short Circuit
¯e
N
10 nV/√Hz VDS= 10V, ID= 10 mA f = 100 Hz
Input Noise Voltage
Common Source Forward Transconductance Re (Y
fs
)12µSV
DS
= 10V, ID= 10 mA f = 105 MHz
Common Gate Input Conductance Re (Y
ig
)14µSV
DS
= 10V, ID= 10 mA f = 105 MHz
Common Source Input Conductance Re (Y
is
) 0.4 µS VDS= 10V, ID= 10 mA f = 105 MHz
Common Source Output Conductance Re (g
os
) 0.15 µS VDS= 10V, ID= 10 mA f = 105 MHz
Common Gate Power Gain
G
pg
16 dB VDS= 10V, ID= 10 mA f = 105 MHz
at Noise Match
11 dB VDS= 10V, ID= 10 mA f = 450 MHz
Noise Figure NF
1.5 dB VDS= 15V, ID= 10 mA f = 105 MHz
2.7 dB VDS= 15V, ID= 10 mA f = 450 MHz
1000 N. Shiloh Road, Garland, TX 75042
(972) 487-1287 FAX (972) 276-3375
www.interfet.com
Databook.fxp 1/13/99 2:09 PM Page B-62
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