U309 Datasheet, PDF (2/3 Pages) New Jersey Semi-Conductor Products, Inc. – N-Channel JFETs

ABSOLUTE MAXIMUM RATINGS
Gate-Drain, Gate-Source Voltage
-25 V
Gate Current :
(J/SST Prefixes)
....................
(U Prefix)
..........................
10 mA
20 mA
Lead Temperature (V^" from case for 10 sec.) ................... 300°C
Storage Temperature :
(J/SST Prefixes) .............. -55 to 150°C
(U Prefix) .................... -65 to 175°C
Operating Junction Temperature
Power Dissipation :
(J/SST Prefixes)3
(U Prefix)"
Notes
a. Derate 2.8 mW/°C above 25°C
b. Derate 4 mW/°C above 25° C
-55 to 150"C
350 mW
500 mW
SPECIFICATIONS FOR J/SST308, J/SST309 AND J/SST310 (TA = 25 C UNLESS NOTED)
Parameter
Static
Symbol
Test Conditions
Typa
J/SST308
Min Max
Limits
J/SST309
Min Max
J/SST310
Min Max
Unit
Gate-Source
Breakdown Voltage
Gate-Source Cutoff Voltage
Saturation Drain Current
Gate Reverse Current
Gate Operating Current
Drain-Source On-Resistance
Gate-Source Forward Voltage
Dynamic
Common-Source
Forward Transconductance
Common-Source
Output Conductance
Common-Source
Input Capacitance
Common-Source
Reverse Transfer Capacitance
Equivalent Input
Noise Voltage
High Frequency
V(BR)GSS
VGS(off)
bss
IGSS
IG
rDS(on)
VoS(F)
Qfs
9os
ciss
Crss
en
IG = -1 MA ,VDS = 0 V
VDS = 10V ID = 1 nA
VDS = 10V, VGS = 0 v
VGS = -15V , VDS = 0 V
TA=125°C
VDG = 9V, ID= 10mA
VGS = 0 V, D = 1 mA
IG = 10mA
VDS = 0 V
J
-35
-25
-25
-25
V
-1 -6.5 -1
-4
-2 -6.5
V
12
60
12
30
24
60
mA
-0.002
-1
-1
-1
nA
-0.001
-1
-1
-1
uA
-15
PA
35
Q
0.7
1
1
1
V
VDS=10 V, ID = 10mA
f = 1 kHz
14
8
10
8
mS
110
250
250
250 uS
J
4
VDS =10 \^t = 1 MHz SST
4
J
J
1.9
SST
1.9
VDS = 10 V, b = 10mA
f = 100 Hz
6
5
5
5
2.5
2.5
2.5
pF
nV/
VHZ
Common-Gate
f = 105 MHz
14
Forward Transconductance
9fg
f = 450 MHz
13
mS
Common-Gate
Output Conductance
f = 105MHz
0.16
9og
VDS =10 V
f = 450 MHz
0.55
ID = 10 mA
f = 105 MHz
16
Common-Gate Power Gainc
Gpg
f = 450 MHz
11.5
dB
f = 105 MHz
1.5
Noise Figure
NF
f = 450 MHz
2.7
Notes
a. Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
b. Pulse test: PW < 300 us duty cycle < 3%.
c. Gain (Gpg) measured at optimum input noise match.