NTE-ELECTRONICS–INC–NTE5437

Part #NTE-ELECTRONICS–INC–NTE5437
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NTE-ELECTRONICS–INC–NTE5437
NTE5437 & NTE5438  
Silicon Controlled Rectifier (SCR)  
8 Amp Sensitive Gate, TO220  
Description:  
The NTE5437 and NTE5438 are silicon controlled rectifiers (SCR) in a TO220 type package designed  
to provide a high dv/dt rate with strong resistance to electromagnetic interfaces. They are especially  
recommended for use on residual current circuit breakers, straight hair, igniters, etc.  
Absolute Maximum Ratings:  
Non
−
Repetitive Peak Off
−
State Voltage, V

DSM  

NTE5437 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400V  
NTE5438 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600V  
Non
−
Repetitive Peak Reverse Voltage, V

RSM  

NTE5437 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400V  
NTE5438 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 600V  
RMS On
−
State Current (T

C

= +90
C), I

T(RMS)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
8A  
Non
−
Repetitive Surge Peak On
−
State Current (t

p

= 10ms), I

TSM

. . . . . . . . . . . . . . . . . . . . . . . . . 100A  
Fusing Current (t

p

= 10ms), I

2

t .
 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
50A

2

s  
Critical rate of Rise of ON
−
State Current, dI/dt
 
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
50A/
m
s  
Peak Gate Current (t

p

= 20
s, T

J

= +110
C), I

GM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
1.2A  
Peak Gate Dissipation (t

p

= 20
s, T

J

= +110
C), P

GM

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
3W  
Average Gate Dissipation (T

J

= +110
C), P

G(AV)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.2W  
Operating Junction
T
e
mperature Range, T

J

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
−
40
to +110
C  
Storage
T
e
mperature Range, T

stg

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
−
40
to +150
C  
Thermal Resistance, Junction
−
to
−
Case, R

thJC

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
 
2.3
C/W  
Electrical Characteristics:
 
(T

J

= +25
C unless otherwise specified)  
Parameter  
Gate Trigger Current  
Gate Trigger Voltage  
Gate Non
−
Trigger Voltage  
Latching Current  
Symbol  
Test Conditions  
Min  
−
Typ Max Unit  
I
GT  
V =
 
12V, R
 
= 33
 
60  
−
200  
0.8  
−
A  
V
D
L
V
GT  
V =
 
12V, R
 
= 33
  
−
D
L
V
GD  
V =
 
V  
D
, T
 
= +110
C  
0.2  
−
−
V
DRM  
J
I
L
I =
 
1.2 I  
G GT  
−
6
mA  
Holding Current  
I
H
I =
 
0.05A  
T
−
−
5
mA  
Critical Rate of Voltage Rise  
dV/dt  
V =
 
526V, R
 
= 100
, T
 
= +110
C  
50  
100  
−
V/
s  
Rev. 11
−
19  
D
GK  
J

Electrical Characteristics (Cont’d):
 
(T

J

= +25
C unless otherwise specified)  
Parameter  
Symbol  
Test Conditions  
Min  
Typ Max Unit  
Static Characteristics  
Maximum On
−
State Voltage  
Off
−
State Leakage Current  
V
I
= 24A, t
 
= 380
s  
−
−
−
−
−
−
1.6  
10  
2
V
TM  
TM  
p
I
, I  
V =
 
V  
, V
 
= V  
DRM RRM  
A  
mA  
DRM RRM  
D
R
T =
 
+110
C  
J
.420 (10.67)  
Max  
.110 (2.79)  
Anode  
.147 (3.75)  
Dia Max  
.500  
(12.7)  
Max  
.250 (6.35)  
Max  
.500  
(12.7)  
Min  
.070 (1.78) Max  
Cathode  
Gate  
Anode  
.100 (2.54)