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 (TC = +250C unless otherwise noted)
Parameters / Test Conditions
Symbol 2N4856
2N4857
2N4858
2N4859
2N4860
2N4861
Unit
Gate-Source Voltage VGS -40 -30 V
Drain-Source Voltage VDS 40 30 V
Drain-Gate Voltage VDG 40 30 V
Gate Current IG 50 mA
Power Dissipation
TA = +250C (1)
TC = +250C (2) PT 0.36
1.8 W
W
Operating Junction & Storage Temperature Range Tj, Tstg -65 to +200 0C
(1) Derate linearly 2.06 mW/0C for TA > 250C.
(2) Derate linearly 10.3 mW/0C for TC > 250C.
TO-18*
(TO-206AA)
*See appendix A for
package outline
ELECTRICAL CHARACTERISTICS (TC = 250C unless otherwise noted)
Parameters / Test Conditions Symbol Min. Max. Units
Gate-Source Breakdown Voltage
VDS = 0, IG = 1.0 µAdc 2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
V(BR)GSS
-40
-30
Vdc
Gate-Source “Off” State Voltage
VDS = 15 Vdc, ID = 0.5 ηAdc 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
VGS(on)
-4.0
-2.0
-0.8
-10
-6.0
-4.0
Vdc
Gate Reverse Current
VDS = 0, VGS = -20 Vdc 2N4856, 2N4857, 2N4858
VDS = 0, VGS = -15 Vdc 2N4859, 2N4860, 2N4861
IGSS
-0.25
-0.25
ηA
Drain Current
VGS = -10 Vds, VDS = 15 Vdc ID(off) 0.25 ηA
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 (TC = 250C unless otherwise noted) (con’t)
Parameters / Test Conditions Symbol Min. Max. Units
Drain Current
VGS = 0, VDS = 15 Vdc 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
IDSS
50
20
8.0
175
100
80
mA
Static Drain - Source “On” State Resistance
VGS = 0, ID = 1.0 mAdc 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
rds(on)
25
40
60
Ω
Drain-Source “On” State Voltage
VGS = 0, ID = 20 mAdc 2N4856, 2N4859
VGS = 0, ID = 10 mAdc 2N4857, 2N4860
VGS = 0, ID = 5.0 mAdc 2N4858, 2N4861
VDS(on)
0.75
0.50
0.50
Vdc
Small-Signal, Common-Source Reverse Transfer Capacitance
VGS = -10 Vdc, VDS = 0, f = 1.0 MHz
C1 = 0.1µF, L1 = L2 ≥ 500 µH
Crss
8.0 pF
Small-Signal, Common-Source Short-Circuit Input Capacitance
VGS = -10 Vdc, VDS = 0, f = 1.0 MHz
C1 = 0.1µF, C2 = 20.1 m
FL1 = L2 ≥ 500 µH
Ciss
18 pF
Turn-On Delay Time 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
tdon 6
6
10 ηs
Rise Time 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
tr 3
4
10 ηs
Turn-Off Delay Time 2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
See Figure 3
of MIL-PRF-
19500/385
tdoff 25
50
100 ηs
6 Lake Street, Lawrence, MA 01841
1-800-446-1158 / (978) 794-1666 / Fax: (978) 689-0803
120101
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