Littelfuse QxxxxLTx Series - Manual (Page 3)

171
Revised: 09/23/13
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Teccor ® brand Thyristors
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Trigger DIAC Specifications
Symbol Test Conditions Value Unit
ΔV
BO
Breakover Voltage Symmetry MAX. 3 V
V
BO
Breakover Voltage, forward and reverse
MIN. 33
V
MAX. 43
[ΔV±] Dynamic Breakback Voltage, forward and reverse (note 1) MIN. 5 V
I
BO
Peak Breakover Current MAX. 25 uA
C
T
Trigger Firing Capacitance MAX. 0.1 μF
(1) Reference test circuit in figure 10 and waveform in figure 11.
Thermal Resistances
Symbol Parameter Value Unit
R
T(J-C)
Junction to case (AC)
Qxx04LT 3.6
°C/W
Qxx06LT /
Qxx06LTH
3.3
Qxx08LT /
Qxx08LTH
2.8
Qxx10LT /
Qxx10LTH
2.6
Qxx15LT /
Qxx15LTH
2.1
R
T(J-A)
Junction to ambient 50 °C/W
Note : xx = voltage
Static Characteristics
Symbol Test Conditions Value Unit
V
TM
I
T
= 1.41 x I
T(rms)
A; t
p
= 380μs MAX. 1.6 V
I
DRM
/ I
RRM
V
DRM
/ V
RRM
T
J
= 25°C
MAX.
10
μA T
J
= 100°C 500
T
J
= 125°C 2000