Teccor, Brand thyristors, 4 amp sensitive & standard triacs – Littelfuse Qxx04xx Series User Manual
Page 3: Static characteristics, Thermal resistances, Figure 1: definition of quadrants
55
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor
®
brand Thyristors
4 Amp Sensitive & Standard Triacs
Lxx04xx & Qxx04xx Series
Static Characteristics
(T
J
= 25°C, unless otherwise specified)
Symbol
Test Conditions
Value
Unit
V
TM
I
TM
= 5.6A t
p
= 380 μs
MAX.
1.60
V
I
DRM
I
RRM
V
DRM
= V
RRM
MAX.
Lxx04xy
T
J
= 25°C
400-600V
5
μA
T
J
= 110°C
400-600V
200
μA
Qxx04xy
T
J
= 25°C
400-1000V
10
μA
T
J
= 125°C
400-800V
2
mA
T
J
= 100°C
1000V
3
Thermal Resistances
Symbol
Parameter
Value
Unit
R
T(J-C)
Junction to case (AC)
L/Qxx04Dy
3.5
°C/W
L/Qxx04Ly
3.6
L/Qxx04Ry
3.6
L/Qxx04Vy
6.0
R
T(J-A)
Junction to ambient
L/Qxx04Ly
50
°C/W
L/Qxx04Ry
45
L/Qxx04Vy
70
Note: xx = voltage, x = package, y = sensitivity
Figure 2: Normalized DC Gate Trigger Current for
All Quadrants vs. Junction Temperature
Junction Temperature (T
J
)- ºC
110
125
85
60
35
10
-40
-40
-65
4.0
0.0
Ratio of
I
GT
I
GT
(T
J
= 2
5
°C)
1.0
2.0
3.0
Figure 1: Definition of Quadrants
MT2 POSITIVE
(Positive Half Cycle)
MT2 NEGATIVE
(Negative Half Cycle)
MT1
MT2
+
I
G T
REF
QII
MT1
I
G T
GATE
MT2
REF
MT1
MT2
REF
MT1
MT2
REF
QI
QIV
QIII
ALL POLARITIES ARE REFERENCED TO MT1
(
-
)
I
G T
GATE
(+)
I
G T
-
I
G T
GATE
(
-
)
I
G T
GATE
(+)
+
-