3SK318
Rev.2.00 Aug 10, 2005 page 2 of 7
Absolute Maximum Ratings
(Ta = 25
°
C)
Item Symbol
Ratings
Unit
Drain to source voltage
V
DS
6 V
Gate1 to source voltage
V
G1S
±6 V
Gate2 to source voltage
V
G2S
±6 V
Drain current
I
D
20
mA
Channel power dissipation
Pch
100
mW
Channel temperature
Tch
150
°
C
Storage temperature
Tstg
–55 to +150
°
C
Electrical Characteristics
(Ta = 25
°
C)
Item Symbol
Min
Typ
Max
Unit
Test
conditions
Drain to source breakdown voltage
V
(BR)DSS
6 — — V
I
D
= 200
µ
A, V
G1S
= V
G2S
= 0
Gate1 to source breakdown voltage
V
(BR)G1SS
±6 — — V
I
G1
= ±10
µ
A, V
G2S
= V
DS
= 0
Gate2 to source breakdown
voltage
V
(BR)G2SS
±6 — — V
I
G2
= ±10
µ
A, V
G1S
= V
DS
= 0
Gate1 to source cutoff current
I
G1SS
— —
±100
nA
V
G1S
= ±5 V, V
G2S
= V
DS
= 0
Gate2 to source cutoff current
I
G2SS
— —
±100
nA
V
G2S
= ±5 V, V
G1S
= V
DS
= 0
Gate1 to source cutoff voltage
V
G1S(off)
0.5 0.7 1.0 V V
DS
= 5 V, V
G2S
= 3 V
I
D
= 100
µ
A
Gate2 to source cutoff voltage
V
G2S(off)
0.5 0.7 1.0 V V
DS
= 5 V, V
G1S
= 3 V
I
D
= 100
µ
A
Drain current
I
DS(op)
0.5 4 10 mA
V
DS
= 3.5 V, V
G1S
= 1.1 V
V
G2S
= 3 V
Forward transfer admittance
|y
fs
| 18 24 32 mS
V
DS
= 3.5 V, V
G2S
= 3 V
I
D
= 10 mA , f = 1 kHz
Input capacitance
C
iss
1.3 1.6 1.9 pF
Output capacitance
C
oss
0.9 1.2 1.5 pF
Reverse transfer capacitance
C
rss
—
0.019
0.03
pF
V
DS
= 3.5 V, V
G2S
= 3 V
I
D
= 10 mA , f= 1 MHz
Power
gain
PG 18 21 — dB
Noise figure
NF
—
1.4
2.2
dB
V
DS
= 3.5 V, V
G2S
= 3 V
I
D
= 10 mA , f = 900 MHz