2N4859
2N4859A
www.centralsemi.com
N-CHANNEL
SILICON JFET
DESCRIPTION:
The CENTRAL SEMICONDUCTOR 2N4859 and
2N4859A are N-Channel silicon JFETs designed for
analog switching and chopper applications.
MARKING: FULL PART NUMBER
TO-18 CASE
MAXIMUM RATINGS: (T =25°C)
Drain-Source Voltage
SYMBOL
UNITS
V
A
V
30
DS
Drain-Gate Voltage
V
30
30
V
V
DG
Reverse Gate-Source Voltage
Forward Gate Current
V
GSR
I
50
mA
mW
°C
GF
Power Dissipation (T =25°C)
A
Operating and Storage Junction Temperature
P
360
D
T , T
-65 to +200
J
stg
ELECTRICAL CHARACTERISTICS: (T =25°C unless otherwise noted)
A
SYMBOL
TEST CONDITIONS
MIN
MAX
UNITS
I
I
I
I
I
V
V
V
V
V
=15V, V =0
0.25
nA
GSS
GS
GS
DS
DS
DS
DS
=15V, V =0, T =150°C
DS
0.5
μA
mA
nA
μA
V
GSS
A
=15V, V =0
50
DSS
GS
=15V, V =10V
GS
0.25
0.5
D(OFF)
D(OFF)
=15V, V =10V, T =150°C
GS
A
BV
I =1.0μA, V =0
30
GSS
G
DS
V
V
V
=15V, I =0.5nA
4.0
10
0.75
25
V
GS(OFF)
DS(ON)
DS(ON)
DS
D
I =20mA, V =0
V
D
GS
=0, I =0, f=1.0kHz
r
V
Ω
GS
GS
GS
GS
GS
DD
DD
DD
DD
DD
D
C
C
C
C
V
V
V
V
V
V
V
V
V
=10V, V =0, f=1.0MHz (2N4859)
8.0
4.0
18
pF
pF
pF
pF
ns
ns
ns
ns
ns
rss
rss
iss
iss
DS
=10V, V =0, f=1.0MHz (2N4859A)
DS
=10V, V =0, f=1.0MHz (2N4859)
DS
=10V, V =0, f=1.0MHz (2N4859A)
DS
10
t
t
t
t
t
=10V, V
=10V, V
=10V, V
=10V, V
=10V, V
=10V, I =20mA (2N4859)
6.0
5.0
3.0
25
d
GS(OFF)
GS(OFF)
GS(OFF)
GS(OFF)
GS(OFF)
D
=10V, I =20mA (2N4859A)
d
D
=10V, I =20mA
r
D
=10V, I =20mA (2N4859)
off
off
D
=10V, I =20mA (2N4859A)
20
D
R0 (11-June 2012)