Planeta
JSC Planeta, 2/13, Fedorovsky Ruchei, Veliky Novgorod, 173004, Russia
E l e c t r o n i c c o m p a n y
Ph/Fax: +7 (81622) 3-17-36, 3-32-86 E-mail: planeta@novgorod.net
http://www.novgorod.net/~planeta
2N4990
Silicon unilateral switch (SUS)
in package TO-92
2.5
0.7max
5.2
1.6
0.45max
14.5
4.2
5.2
1
2
3
Ratings
Symbol
Parameter, units
Limits
V
rrm
Peak reverse voltage, V
-30
I
T(rms)
DC forward anode current, mA
175
I
gm
DC gate current, mA
5
I
T(sm)
Peak recurrent forward current, A,
(1% duty cycle, 10
sec pulse width)
1
P
Power dissipation, mW
300
Electrical Characteristics (T
A
=25њC)
Limits
Symbol
Parameter, unit, test conditions
min
max
V
S
Switching voltage, V
7
9
I
S
Switching current,
A
200
I
H
Holding current, mA
0.75
I
R
Revers current,
A,
V
R
=-30V
0.1
I
B
Forward current (off-state),
A,
V
F
=5V
0.1
V
F
On-State voltage, V,
I
F
=175mA
1.5
Pinouts:
1- Cathode, 2- Gate, 3- Anode
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