TECHNICAL DATA
N-CHANNEL J-FET
Qualified per MIL-PRF-19500/385
Devices
Qualified Level
2N4856 2N4857 2N4858 2N4859 2N4860 2N4861
JAN
JANTX
JANTXV
ABSOLUTE MAXIMUM RATINGS (T
C
= +25
0
C unless otherwise noted)
Parameters / Test Conditions
Symbol
2N4856
2N4857
2N4858
2N4859
2N4860
2N4861
Unit
Gate-Source Voltage
V
GS
-40
-30
V
Drain-Source Voltage
V
DS
40
30
V
Drain-Gate Voltage
V
DG
40
30
V
Gate Current
I
G
50
mA
Power Dissipation
T
A
= +25
0
C
(1)
T
C
= +25
0
C
(2)
P
T
0.36
1.8
W
W
Operating Junction & Storage Temperature Range
T
j
, T
stg
-65 to +200
0
C
(1) Derate linearly 2.06 mW/
0
C for T
A
> 25
0
C.
(2) Derate linearly 10.3 mW/
0
C for T
C
> 25
0
C.
TO-18*
(TO-206AA)
*See appendix A for
package outline
ELECTRICAL CHARACTERISTICS (T
C
= 25
0
C unless otherwise noted)
Parameters / Test Conditions
Symbol
Min.
Max.
Units
Gate-Source Breakdown Voltage
V
DS
= 0, I
G
= 1.0
Adc
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
V
(BR)GSS
-40
-30
Vdc
Gate-Source "Off" State Voltage
V
DS
= 15 Vdc, I
D
= 0.5
Adc
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
V
GS(on)
-4.0
-2.0
-0.8
-10
-6.0
-4.0
Vdc
Gate Reverse Current
V
DS
= 0, V
GS
= -20 Vdc
2N4856, 2N4857, 2N4858
V
DS
= 0, V
GS
= -15 Vdc
2N4859, 2N4860, 2N4861
I
GSS
-0.25
-0.25
A
Drain Current
V
GS
= -10 Vds, V
DS
= 15 Vdc
I
D(off)
0.25
A
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 794-1666 / Fax: (978) 689-0803
120101
Page 1 of 2
2N4856, 2N4857, 2N4858, 2N4859, 2N4860, 2N24861 JAN SERIES
ELECTRICAL CHARACTERISTICS (T
C
= 25
0
C unless otherwise noted) (con't)
Parameters / Test Conditions
Symbol
Min.
Max.
Units
Drain Current
V
GS
= 0, V
DS
= 15 Vdc 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
I
DSS
50
20
8.0
175
100
80
mA
Static Drain - Source "On" State Resistance
V
GS
= 0, I
D
= 1.0 mAdc
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
r
ds(on)
25
40
60
Drain-Source "On" State Voltage
V
GS
= 0, I
D
= 20 mAdc
2N4856, 2N4859
V
GS
= 0, I
D
= 10 mAdc
2N4857, 2N4860
V
GS
= 0, I
D
= 5.0 mAdc
2N4858, 2N4861
V
DS(on)
0.75
0.50
0.50
Vdc
Small-Signal, Common-Source Reverse Transfer Capacitance
V
GS
= -10 Vdc, V
DS
= 0, f = 1.0 MHz
C
1
= 0.1
F, L
1
= L
2
500
H
C
rss
8.0
pF
Small-Signal, Common-Source Short-Circuit Input Capacitance
V
GS
= -10 Vdc, V
DS
= 0, f = 1.0 MHz
C
1
= 0.1
F, C
2
= 20.1 m
FL
1
= L
2
500
H
C
iss
18
pF
Turn-On Delay Time 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
t
d
on
6
6
10
s
Rise Time 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
t
r
3
4
10
s
Turn-Off Delay Time 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
See Figure 3
of MIL-PRF-
19500/385
t
d
off
25
50
100
s
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 794-1666 / Fax: (978) 689-0803
120101
Page 2 of 2
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