TECHNICAL DATA
N-CHANNEL J-FET
Qualified per MIL-PRF-19500/ 385
Devices
Qualified Level
JAN
2N4856 2N4857
2N4858 2N4859
2N4860
2N4861
JANTX
JANTXV
ABSOLUTE MAXIMUM RATINGS (TC = +250C unless otherwise noted)
2N4856 2N4859
Parameters / Test Conditions
Symbol 2N4857 2N4860 Unit
2N4858 2N4861
Gate-Source Voltage
VGS
VDS
VDG
IG
-40
40
40
-30
30
30
V
V
V
Drain-Source Voltage
Drain-Gate Voltage
Gate Current
TO-18*
50
mA
(TO-206AA)
Power Dissipation
TA = +250C (1)
TC = +250C (2)
PT
0.36
1.8
-65 to +200
W
W
0C
Operating Junction & Storage Temperature Range
(1) Derate linearly 2.06 mW/0C for TA > 250C.
(2) Derate linearly 10.3 mW/0C for TC > 250C.
Tj, Tstg
*See appendix A for
package outline
ELECTRICAL CHARACTERISTICS (TC = 250C unless otherwise noted)
Parameters / Test Conditions
Gate-Source Breakdown Voltage
VDS = 0, IG = 1.0 mAdc
Symbol
Min.
Max.
Units
V(BR)GSS
-40
-30
Vdc
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
Gate-Source “Off” State Voltage
-4.0
-2.0
-0.8
-10
-6.0
-4.0
VDS = 15 Vdc, ID = 0.5 hAdc
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
VGS(on)
Vdc
Gate Reverse Current
VDS = 0, VGS = -20 Vdc
VDS = 0, VGS = -15 Vdc
Drain Current
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
IGSS
-0.25
-0.25
hA
hA
ID(off)
0.25
VGS = -10 Vds, VDS = 15 Vdc
6 Lake Street, Lawrence, MA 01841
120101
1-800-446-1158 / (978) 794-1666 / Fax: (978) 689-0803
Page 1 of 2