2N4856-2N4861
N CHANNEL JFETS
High-reliability discrete products
and engineering services since 1977
FEATURES
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.
MAXIMUM RATINGS
Parameters
Symbol
VGS
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
Unit
V
Gate-source voltage
Drain-source voltage
Drain-gate voltage
Gate current
-40
40
-30
30
VDS
V
VDG
40
30
V
IG
50
mA
Power dissipation
TA = 25°C(1)
TC = 25°C(2)
PT
0.36
1.8
W
°C
Operating and storage temperature range
TJ, Tstg
-65 to +200
1.
2.
Derate linearly 2.06 mW/°C for TA > 25°C.
Derate linearly 10.3 mW/°C for TC > 25°C
ELECTRICAL CHARACTERISTICS (TC = 25°C unless otherwise noted)
Parameters
Symbol
Min
Max
Unit
Gate-source breakdown voltage
2N4856, 2N4857, 2N4858
V(BR)GSS
-40
-30
Vdc
(VDS = 0, IG = 1.0µAdc)
2N4859, 2N4860, 2N4861
Gate-source “off” voltage
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
-4.0
-2.0
-0.8
-10
-6.0
-4.0
VGS(off)
Vdc
ŋAdc)
(VDS = 15Vdc, ID = 0.5
Gate-reverse current
(VDS = 0, VGS = -20Vdc)
(VDS = 0, VGS = -15Vdc)
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
IGSS
-0.25
-0.25
ŋA
ŋA
Drain current
ID(off)
0.25
(VGS = -10Vdc, VDS = 15 Vdc)
Drain current
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
50
20
175
100
80
IDSS
mA
Ω
(VGS = 0, VDS = 15Vdc)
8.0
Static drain – source “on” state resistance
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
25
40
60
rds(on)
(VGS = 0, ID = 1.0mAdc)
Drain source “on” state voltage
(VGS = 0, ID = 20mAdc)
2N4856, 2N4859
2N4857, 2N4860
2N4858, 2N4861
0.75
0.50
0.50
VDS(on)
Vdc
pF
(VGS = 0, ID = 10mAdc)
(VGS = 0, ID = 5.0mAdc)
Small signal, common source reverse transfer capacitance
(VGS = -10Vdc, VDS = 0, f = 1.0MHz)
Crss
8.0
≥ 500µH)
(C1 = 0.1µF, L1 = L2
Rev. 20150515