01/99
B-15
2N4856, 2N4857, 2N4858, 2N4859, 2N4860, 2N4861
N-Channel Silicon Junction Field-Effect Transistor
Absolute maximum ratings at T
A
= 25C
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
Reverse Gate Source Voltage
40 V
30 V
Reverse Gate Drain Voltage
40 V
30 V
Continuous Device Dissipation
1.8 W
1.8 W
Power Derating
10 mW/C
10 mW/C
Continuous Forward Gate Current
50 mA
50 mA
TO18 Package
See Section G for Outline Dimensions
Pin Configuration
1 Source, 2 Drain, 3 Gate &Case
Surface Mount
SMP4856, SMP4857, SMP4858,
SMP4859, SMP4860, SMP4861
2N4856
2N4857
2N4858
At 25C free air temperature:
2N4859
2N4860
2N4861
Process NJ132
Static Electrical Characteristics
Min
Max
Min
Max
Min
Max
Unit
Test Conditions
Gate Source Breakdown Voltage
2N4856, 2N4857, 2N4858
V
(BR)GSS
40
40
40
V
I
G
= 1 A, V
DS
= V
2N4859, 2N4860, 2N4861
30
30
30
V
I
G
= 1 A, V
DS
= V
Gate Reverse Current
I
GSS
250
250
250
pA
V
GS
= 20V, V
DS
= V
2N4856, 2N4857, 2N4858
500
500
500
nA
V
GS
= 20V, V
DS
= V
T
A
= 150C
Gate Reverse Current
I
GSS
250
250
250
pA
V
GS
= 15V, V
DS
= V
2N4859, 2N4860, 2N4861
500
500
500
nA
V
GS
= 15V, V
DS
= V
T
A
= 150C
Gate Source Cutoff Voltage
V
GS(OFF)
4
10
2
6
0.8
4
V
V
DS
= 15V, I
D
= 0.5 nA
Drain Saturation Current (Pulsed)
I
DSS
50
20
100
8
80
mA
V
DS
= 15V, V
GS
= V
Drain Cutoff Current
I
D(OFF)
250
250
250
pA
V
DS
= 15V, V
GS
= 10V
500
500
500
nA
V
DS
= 15V, V
GS
= 10V
T
A
= 150C
Drain Source ON Voltage
V
DS(ON)
0.75
0.5
0.5
V
V
GS
= V, I
D
= ( )
(20)
(10)
(5)
(mA)
Dynamic Electrical Characteristics
Common Source ON Resistance
r
ds(on)
25
40
60
V
GS
= V, I
D
= A
f = 1 kHz
Common Source Input Capacitance
C
iss
18
18
18
pF
V
DS
= V, V
GS
= 10V
f = 1 MHz
Common Source Reverse
C
rss
8
8
8
pF
V
DS
= V, V
GS
= 10V
f = 1 MHz
Transfer Capacitance
Switching Characteristics
6
6
10
ns
Turn ON Delay Time
t
d(on)
(20)
(10)
(5)
(mA)
[10]
[ 6]
[ 4]
[V]
V
DD
= 10V, V
GS
= V
3
4
10
ns
I
D(ON)
= ( )
Rise Time
t
r
(20)
(10)
(5)
(mA)
V
GS(OFF)
= [ ]
[10]
[ 6]
[ 4]
[V]
(2N4856, 2N4859)
R
L
= 465
25
50
100
ns
(2N4857, 2N4860)
R
L
= 953
Turn OFF Delay Time
t
d(off)
(20)
(10)
(5)
(mA)
(2N4858, 2N4861)
R
L
= 1910
[10]
[ 6]
[ 4]
[V]
Choppers
Commutators
Analog Switches
1000 N. Shiloh Road, Garland, TX 75042
(972) 487-1287
FAX
(972) 276-3375
www.interfet.com
Databook.fxp 1/14/99 11:30 AM Page B-15
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