Littelfuse Sxx25x Series - Manual (Page 3)

297
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor ® brand Thyristors
20 / 25 Amp Standard SCRs
Sxx20x & Sxx25x Series
Static Characteristics
Symbol Test Conditions Value Unit
V
TM
20A Device I
T
= 40A; t
p
= 380μs
MAX. 1.6 V
25A Device I
T
= 50A; t
p
= 380μs
I
DRM
/ I
RRM
V
DRM
/ V
RRM
T
J
= 25°C
o7
MAX.
10
μA
o7 20
T
J
= 100°C
o7 500
800V 1000
1000V 3000
T
J
= 125°C
o7 1000
800V 2000
Thermal Resistances
Symbol Parameter Value Unit
R
T(J-C)
Junction to case (AC)
Sxx25R /
Sxx25N
1.0
°C/W
Sxx20L 2.4
Sxx25L 2.35
R
T(J-A)
Junction to ambient
Sxx25R 40
°C/W
Sxx20L
/ Sxx25L
50
Note: xx = voltage
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
Figure 2: Normalized DC Gate Trigger Voltage
vs. Junction Temperature
125
0.0
0.5
1.0
1.5
2.0
-40 -15 10 35 60 85 110
Junction Temperature (T
J
) – (ºC)
Ratio of I
GT
/ I
GT
(T
J
= 2
5
ºC)
125
0.0
0.5
1.0
1.5
2.0
-40 -15 10 35 60 85 110
Junction Temperature (T
J
) – (ºC)
Ratio of
V
GT
/
V
GT
(T
J
= 2
5
ºC)