U308 Datasheet, PDF (2/2 Pages) Calogic, LLC – N-Channel JFET High Frequency Amplifier

SPECIFIC ELECTRICAL CHARACTERISTICS @25 °C (unless otherwise stated)
SYM. CHARACTERISTIC
J/SST308 J/SST309 J/SST310
TYP
UNIT
MIN MAX MIN MAX MIN MAX
V_GS(off) Gate to Source Cutoff Voltage
I_DSS Source to Drain Saturation Current³
-1 -6.5 -1 -4 -2 -6.5 V
12 60 12 30 24 60 mA
C_iss Input Capacitance
4
5
5
5
pF
C_rss Reverse Transfer Capacitance
1.9
2.5
2.5
2.5
g_fs Forward Transconductance
14 8
10
8
mS
g_os Output Conductance
110
250
250
250 µS
CONDITIONS
V_DS = 10V, I_D = 1nA
V_DS = 10V, V_GS = 0V
V_DS = 10V, V_GS = -10V
f = 1MHz
V_DS = 10V, I_D = 10mA
f = 1kHz
SPECIFIC ELECTRICAL CHARACTERISTICS @25 °C (unless otherwise stated)
SYM. CHARACTERISTIC
U308
U309
U310
TYP
UNIT
MIN MAX MIN MAX MIN MAX
V_GS(off) Gate to Source Cutoff Voltage
I_DSS Source to Drain Saturation Current³
-1 -6.5 -1
12 60 12
-4 -2.5 -6.5 V
30 24 60 mA
C_iss Input Capacitance
4
5
5
5
pF
C_rss Reverse Transfer Capacitance
1.9
2.5
2.5
2.5
g_fs Forward Transconductance
14 10
10
10
mS
g_os Output Conductance
110
250
250
250 µS
CONDITIONS
V_DS = 10V, I_D = 1nA
V_DS = 10V, V_GS = 0V
V_DS = 10V, V_GS = -10V
f = 1MHz
V_DS = 10V, I_D = 10mA
f = 1kHz
TO-18
Three Lead
0.195 _DIA.
0.175
0.030
MAX.
0.230 _DIA.
0.209
0.150
0.115
3 LEADS
0.019 DIA.
0.016
0.500 MIN.
0.100
0.050
2
1
3
45°
0.046
0.036
0.048
0.028
TO-92
0.175
0.195
0.170
LS XXX
0.195
YYWW
0.130
0.155
0.045
0.060
0.500
0.610
0.016
0.022
0.014
0.020
1
2
3
0.095
0.105
0.045
0.055
DIMENSIONS
IN INCHES.
SOT-23
0.89
1.03
1
1.78
2.05
2
0.37
0.51
3
2.80
3.04
1.20
1.40
0.89
2.10
1.12
2.64
0.085
0.180
0.013
0.100
0.55
DIMENSIONS IN
MILLIMETERS
1. Absolute maximum ratings are limiting values above which serviceability may be impaired.
2. Measured at optimum input noise match.
3. Pulse test: PW ≤ 300µs, Duty Cycle ≤ 3%
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