UTC 2SK303
Low-Frequency General-Purpose
Amplifier Applications
FEATURES
* Ideal for potentiometers, analog switches, low
frequency amplifiers, constant current supplies, and
impedance conversion.
JFET
2
1
3
SOT-23
1: Drain
2: Source
3: Gate
ABSOLUTE MAXIMUM RATINGS
(Ta=25℃)
PARAMETER
Drain-to-Source Voltage
Gate-to-Drain Voltage
Gate Current
Drain Current
Allowable Power Dissipation
Junctin Temperature
Storage Temperature
SYMBOL
V
DSS
V
GDS
I
G
I
D
P
D
T
j
T
stg
RATINGS
30
-30
10
20
200
150
-55 ~ +150
UNIT
V
V
mA
mA
mW
℃
℃
ELECTRICAL CHARACTERISTICS
(Ta=25℃)
PARAMETER
Gate-to-Drain
Gate-to-Source Leakage Current
Zero-Gate Voltage Drain Current
Cutoff Voltage
Forward Transfer Admittance
Input Capacitance
Reverse Transfer Capacitance
Drain-to- Source ON Resistance
SYMBOL
V
(BR)GDS
I
GSS
I
DSS
*
V
GS(off)
| yfs |
C
i
SS
C
r
SS
R
DS (ON)
TEST CONDITIONS
I
G
=-10μA
V
GS
=-20V
V
DS
=10V, V
GS
=0
V
DS
=10V, I
D
=1μA
V
DS
=10V, V
GS
=0, f=1MHz
V
DS
=10V, V
GS
=0, f=1MHz
V
DS
=10V, V
GS
=0, f=1MHz
V
DS
=10mV, V
GS
=0
MIN
-30
0.6*
2.5
TYP
MAX
-1.0
12.0*
-4
UNIT
V
nA
mA
V
mS
pF
pF
Ω
-1
6.0
5
1.5
250
CLASSIFICATION OF I
DSS
RANK
MARKING CODE
I
DSS
(mA)
V2
V2
0.6 ~ 1.5
V3
V3
1.2 ~ 3.0
V4
V4
2.5 ~ 6.0
V5
V5
5.0 ~ 12.0
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R206-071,A
UTC 2SK303
TYPICAL PERFORMANCE CHARACTERISTICS
I
D
- V
DS
I
D
- V
DS
JFET
5
4
V
GS
=0
5.0
4.0
3.0
2.0
1.0
0
V
GS
=0
-0.1V
-0.2V
-0.3V
-0.4V
Drain Current, I
D
(mA)
Drain Current, I
D
(mA)
3
-0.1V
2
1
0
-0.2V
-0.3V
-0.4V
0
1.0
2.0
3.0
4.0
5.0
0
5
10
15
20
25
30
Drain-to-Source Voltage, V
DS
(V)
Drain-to-Source Voltage, V
DS
(V)
I
D
- V
GS
V
DS
=10V
12
10
8
mA
9.0
=
S
5 .0
mA
mA
3.0
mA
1.0
I
D
- V
GS
V
DS
=10V
Drain Current, I
D
(mA)
5
4
3
2
1
℃
25
I
DS
4
2
0
0
75
℃
Ta
=
6
-2.00 -1.75 -1.50 -1.25 -1.00 -0.75 -0.50 -0.25
Gate-to-Source Voltage, V
GS
(V)
V
GS(off)
- I
DSS
-1.2
0
-1.0
-0.8
-0.6
-0.4
-0.2
0
Gate-to-Source Voltage, V
GS
(V)
| yfs | - I
D
5
Cutoff Voltage, V
GS(off)
(V)
Forward Transfer Admittance, | yfs | (mS)
3
2
-1.0
7
5
3
2
5
7
1.0
2
3
5
V
DS
= 10V
I
D
= 1.0μA
2
10
7
5
3
2
1.0
7
5
3
V
DS
= 10V
f = 1kHz
mA
3.0
=1
S
.0 m
A
5.0m
A
9.0m
A
I
DS
7
10
2
2
0.1
2 3
5 7 1.0
2 3
5 7 10
2
3
Saturation Drain Current, I
DSS
(mA)
Drain Current, I
D
(mA)
UTC
UNISONIC TECHNOLOGIES CO., LTD.
QW-R206-071,A
Drain Current, I
D
(mA)
-2
5
℃
2
UTC 2SK303
Forward Transfer Admittance, | yfs | (mS)
| yfs | - I
DSS
Gate-to-Drain Ieak Current, I
GDL
(A)
3
2
10
7
5
3
2
1.0
5
7
1.0
2
3
5
7
10
2
Saturation Drain Current, I
DSS
(mA)
V
DS
= 10V
V
GS
= 0V
f = 1kHz
100n
3
10n
3
1n
3
100p
3
10p
3
1p
5
0
I
GDL
G
D
S
JFET
I
GDL
- V
DS
I
D
DC
DC
I
D
= 1mA
5
20
15
10
Drain-to-Source Voltage, V
DS
(V)
25
C
iss
- V
DS
C
rss
- V
DS
Reverse Transfer Capacitance, C
rss
(pF)
5
(pF)
3
2
10
7
5
3
2
1.0
7 1.0
2
3
5 7 10
2
V
GS
= 0V
f = 1MHz
10
7
5
3
2
1.0
7
5
3
2
7 1.0
2
3
5 7 10
2
V
GS
= 0V
f = 1MHz
Input Capacitance, C
iss
3
5 7
3
5 7
Drain-to-Source Voltage, V
DS
(V)
NF - f
Drain-to-Source Voltage, V
DS
(V)
NF - f
12
11
10
9
8
7
6
5
4
3
10
k
Ω
2
1
100
k
Ω
0
2 5
2 5
2
2 5
100
1k
10
10k
Rg
k
Ω
=1
16
14
Noise Figure, NF (dB)
V
DS
= 10V
Rg = 1kΩ
Noise Figure, NF (dB)
V
DS
= 10V
I
D
= 3.0mA
12
10
8
6
4
2
0
10
2 5
2 5
2
5
2
2
5
100k
5
I
D
= 0.1mA
0.3mA 3.0mA
100
1k
10k
1M
5
2
100k
5
1M
Frequency, f (Hz)
Frequency, f (Hz)
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R206-071,A
UTC 2SK303
Drain-to-Source ON Resistance, R
DS(ON)
(Ω)
R
DS(ON)
- I
DSS
P
D
- Ta
JFET
V
DS
= 10mV
V
GS
= 0
Allowable Power Dissipation, P (mW)
D
2
1000
7
5
3
2
240
200
160
120
80
40
0
0
20
40
60
80
100 120 140 160
Ambient Temperature, Ta (
℃
)
100
7
3
5 7 1.0
2
3
5 7 10
2
3
Drain Current, I
DSS
(mA)
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UTC
UNISONIC TECHNOLOGIES CO., LTD.
4
QW-R206-071,A
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