Teccor® brand Thyristors
4 / 6 / 8 / 10 / 15 Amp Quadracs
Figure 1: Normalized DC Holding Current
vs. Junction Temperature
2.0
1.5
1.0
0.5
0.0
-40 -15 10 35 60 85
Junction Temperature (TJ) -- °C
Figure 3: On-State Current vs. On-State Voltage
(Typical) (6A to 15A)
110
50
45 TJ = 25°C
40
35 Qxx15LT
Qxx15LTH
30
25
20
15 Qxx06LT/Qxx06LTH
Qxx08LT/Qxx08LTH
10 Qxx10LT/Qxx10LTH
5
0
0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6
Instantaneous On-state Voltage (vT) – Volts
1.7
Figure 5: Power Dissipation vs. RMS On-State Current
(Typical) (6A to 15A)
18
16
14
12
10
8
6
4
2
0
0
Qxx06LT/Qxx06LTH
Qxx08LT/Qxx08LTH
Qxx10LT/Qxx10LTH
Qxx15LT
Qxx15LTH
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 360°
2 4 6 8 10 12
RMS On-State Current [IT(RMS)] - (Amps)
14
16
© 2014 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/14/14
Figure 2: O n-State Current vs. On-State Voltage
(Typical) (4A)
16
14 TJ = 25°C
12
10
Qxx04LT
8
6
4
2
0
0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5
Instantaneous On-state Voltage (vT) – Volts
1.6
Figure 4: P ower Dissipation vs. RMS On-State
Current (Typical) (4A)
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0.0
Qxx04LT
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 360°
0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
RMS On-State Current [IT(RMS)] - (Amps)
Figure 6: M aximum Allowable Case Temperature
vs. RMS On-State Current
130
120 Qxx08LT
Qxx08LTH
110
100
Qxx04LT
90
Qxx06LT
Qxx06LTH
80
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
Qxx10LT
Qxx10LTH
Qxx15LT
Qxx15LTH
70
0
2 4 6 8 10 12 14
RMS On-State Current [IT(RMS)] - Amps
16