01/99
B-15
2N4856, 2N4857, 2N4858, 2N4859, 2N4860, 2N4861
N-Channel Silicon Junction Field-Effect Transistor
Absolute maximum ratings at T = 25¡C
¥ Choppers
¥ Commutators
¥ Analog Switches
A
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
Reverse Gate Source Voltage
Reverse Gate Drain Voltage
Continuous Device Dissipation
Power Derating
– 40 V
– 40 V
– 30 V
– 30 V
1.8 W
1.8 W
10 mW/°C
50 mA
10 mW/°C
50 mA
Continuous Forward Gate Current
2N4856
2N4859
2N4857
2N4860
2N4858
2N4861
Process NJ132
Test Conditions
At 25°C free air temperature:
Static Electrical Characteristics
Min Max Min Max Min Max Unit
Gate Source Breakdown Voltage
2N4856, 2N4857, 2N4858
2N4859, 2N4860, 2N4861
V
– 40
– 30
– 40
– 30
– 40
– 30
V
V
I = – 1µA, V = ØV
G DS
(BR)GSS
I = – 1µA, V = ØV
G
DS
– 250
– 500
– 250
– 500
– 10 – 2
20
– 250
– 500
– 250
– 500
– 250 pA
– 500 nA
– 250 pA
– 500 nA
V
= – 20V, V = ØV
DS
Gate Reverse Current
2N4856, 2N4857, 2N4858
GS
I
GSS
V
= – 20V, V = ØV
DS
T = 150°C
A
GS
V
= – 15V, V = ØV
DS
Gate Reverse Current
2N4859, 2N4860, 2N4861
GS
I
GSS
V
= – 15V, V = ØV
DS
T = 150°C
A
GS
Gate Source Cutoff Voltage
V
– 4
50
– 6 – 0.8 – 4
V
V = 15V, I = 0.5 nA
DS D
GS(OFF)
Drain Saturation Current (Pulsed)
I
100
250
500
8
80
mA
pA
nA
V
= 15V, V = ØV
DSS
DS GS
250
250
500
V
= 15V, V = – 10V
GS
DS
I
Drain Cutoff Current
D(OFF)
500
V
= 15V, V = – 10V
GS
T = 150°C
A
DS
0.75
(20)
0.5
(10)
0.5
(5) (mA)
V
V
Drain Source ON Voltage
V
= ØV, I = ( )
D
DS(ON)
GS
Dynamic Electrical Characteristics
Common Source ON Resistance
Common Source Input Capacitance
r
25
18
40
18
60
18
Ω
V
= ØV, I = Ø A
f = 1 kHz
f = 1 MHz
ds(on)
GS D
C
pF
V
= ØV, V = – 10V
iss
DS GS
Common Source Reverse
Transfer Capacitance
C
8
8
8
pF
V
= ØV, V = – 10V
f = 1 MHz
rss
DS GS
Switching Characteristics
6
6
10
ns
Turn ON Delay Time
t
t
t
(20)
[–10]
(10)
[– 6]
(5) (mA)
[– 4] [V]
d(on)
V
= 10V, V = ØV
GS
= ( )
DD
I
D(ON)
3
4
(10)
[– 6]
10
ns
V
= [ ]
GS(OFF)
Rise Time
(20)
[–10]
(5) (mA)
[– 4] [V]
r
(2N4856, 2N4859) RL = 465Ω
(2N4857, 2N4860) RL = 953Ω
(2N4858, 2N4861) RL = 1910Ω
25
(20)
[–10]
50
(10)
[– 6]
100
ns
Turn OFF Delay Time
(5) (mA)
[– 4] [V]
d(off)
TOÐ18 Package
Surface Mount
SMP4856, SMP4857, SMP4858,
SMP4859, SMP4860, SMP4861
See Section G for Outline Dimensions
Pin Configuration
1 Source, 2 Drain, 3 Gate &Case
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