155
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
QxxxxLTx Series
Description
Main Features
The Quadrac is an internally triggered Triac designed for
AC switching and phase control applications. It is a Triac
and DIAC in a single package, which saves user expense
by eliminating the need for separate Triac and DIAC
components.
Standard type devices normally operate in Quadrants I & III
triggered from AC line.
Alternistor type Quadracs are used in circuits requiring high
dv/dt capability.
Symbol Value Unit
IT(RMS) 4 to 15 A
VDRM / VRRM 400 to 600 V
DIAC VBO 33 to 43 V
Schematic Symbol Applications
Excellent for AC switching and phase control applications
such as lighting and heating. Typical applications are AC
solid-state switches, light dimmers, power tools, home/
brown goods and white goods appliances.
Alternistor Quadracs (no snubber required) are used in
applications with extremely inductive loads requiring
highest commutation performance.
Internally constructed isolated package is offered for ease
of heat sinking with highest isolation voltage.
Features & Benefits
• RoHS Compliant
• Glass – passivated
junctions
• Voltage capability up to
600 V
• Surge capability up to
200 A
Agency Approval
Agency Agency File Number
®L Package : E71639
MT2 MT1
T
®
156
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Absolute Maximum Ratings
Symbol Parameter
Value
Unit
Qxx04LT
Qxx06LT /
Qxx06LTH
Qxx08LT /
Qxx08LTH
Qxx10LT /
Qxx10LTH
Qxx15LT /
Qxx15LTH
IT(RMS) RMS forward current
Qxx04LT: TC = 95°C
Qxx06LT/Qxx08LT/Qxx10LT: TC = 90°C
Qxx15LT: TC = 80°C
46810 15 A
ITSM Peak non-repetitive surge current
single half cycle; f = 50Hz;
TJ (initial) = 25°C 46 65 83 100 167
A
single half cycle; f = 60Hz;
TJ (initial) = 25°C 55 80 100 120 200
I2t I2t value for fusing tp = 8.3ms 12.5 26.5 41 60 166 A2s
di/dt Critical rate-of-rise of on-state current f = 60Hz; TJ =125°C 50 70 100 A/µs
IGM Peak gate current TJ = 125°C 1. 5 A
Tstg Storage temperature range -40 to 150 °C
TJOperating junction temperature range -40 to 125 °C
Note: xx = voltage
Electrical Characteristics (TJ = 25°C, unless otherwise specified) – Standard Quadrac
Electrical Characteristics (TJ = 25°C, unless otherwise specified) – Alternistor Quadrac
Symbol Test Conditions
Value
Unit
Qxx04LT
Qxx06LT
Qxx08LT
Qxx10LT
Qxx15LT
IHIT = 200mA (initial) MAX. 40 50 60 60 70 mA
dv/dt
VD = VDRM; gate open; TJ=100°C MIN.
400V 75 150 175 200 300
V/μs
600V 50 125 150 175 200
VD = VDRM; gate open; TJ=125°C MIN. 400V 50 100 120 150 200
600V 50 85 100 120 150
dv/dt(c) di/dt(c) = 0.54 x IT(rms) / ms; TJ = 125°C MIN. 3 4 V/μs
tgt (note 1) TYP. 3 μs
(1) Reference test circuit in figure 10 and waveform in figure 11; CT = 0.1μF with 0.1μs rise time.
Note: xx = voltage
Symbol Test Conditions
Value
Unit
Qxx06LTH
Qxx08LTH
Qxx10LTH
Qxx15LTH
IHIT = 20mA (initial) MAX. 50 50 60 70 mA
dv/dt
VD = VDRM; gate open; TJ=100°C MIN. 400V 575 925
V/μs
600V 425 775
VD = VDRM; gate open; TJ=125°C MIN. 400V 450 700
600V 350 600
dv/dt(c) di/dt(c) = 0.54 x IT(rms) / ms; TJ = 125°C MIN. 25 30 V/μs
tgt (note 1) TYP. 3 μs
(1) Reference test circuit in figure 10 and waveform in figure 11; CT = 0.1μF with 0.1μs rise time.
Note: xx = voltage
157
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Trigger DIAC Specifications
Symbol Test Conditions Value Unit
ΔVBO Breakover Voltage Symmetry MAX. 3 V
VBO Breakover Voltage, forward and reverse MIN. 33 V
MAX. 43
[ΔV±] Dynamic Breakback Voltage, forward and reverse (note 1) MIN. 5 V
IBO Peak Breakover Current MAX. 25 uA
CTTrigger Firing Capacitance MAX. 0.1 µF
(1) Reference test circuit in figure 10 and waveform in figure 11.
Thermal Resistances
Symbol Parameter Value Unit
Rθ(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
Rθ(J-A) Junction to ambient 50 °C/W
Note : xx = voltage
Static Characteristics
Symbol Test Conditions Value Unit
VTM IT = 1.41 x IT(rms) A; tp = 380μs MAX. 1. 6 V
IDRM / IRRM VDRM / VRRM
TJ = 25°C
MAX.
10
µATJ = 100°C 500
TJ = 125°C 2000
158
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Figure 1: Normalized DC Holding Current
vs. Junction Temperature
Junction Temperature (TJ) -- °C
Ratio of I
H
/I
H
(T
J
= 25°C)
125
0.0
0.5
1.0
1.5
2.0
-40-15 10 35 60 85 110
Figure 2: On-State Current vs. On-State Voltage
(Typical) (4A)
TJ = 25°C
0
2
4
6
8
10
12
14
16
0.70.8 0.91.0 1.11.2 1.31.4 1.51.6
Instantaneous On-state Voltage (vT) – Volts
Instantaneous On-state Current (iT) – Amps
Qxx04LT
TJ = 25°C
0
5
10
15
20
25
30
35
40
45
50
0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
Instantaneous On-state Voltage (vT) – Volts
Instantaneous On-state Current (iT) – Amps
Qxx06LT/Qxx06LTH
Qxx08LT/Qxx08LTH
Qxx10LT/Qxx10LTH
Qxx15LT
Qxx15LTH
0
2
4
6
8
10
12
14
16
18
0246810121
41
6
RMS On-State Current [IT(RMS)] - (Amps)
Average On-State Power Dissipation
[PD(AV)] - (Watts)
Qxx15LT
Qxx15LTH
Qxx06LT/Qxx06LTH
Qxx08LT/Qxx08LTH
Qxx10LT/Qxx10LTH
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 360°
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
0.00.5 1.01.5 2.02.5 3.03.5 4.0
RMS On-State Current [IT(RMS)] - (Amps)
Average On-State Power Dissipation
[PD(AV)] - (Watts)
Qxx04LT
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 360°
70
80
90
100
110
120
130
0246810121
41
6
RMS On-State Current [IT(RMS)] - Amps
Maximum Allowable Case Temperature
(TC) - °C
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
Qxx15LT
Qxx15LTH
Qxx10LT
Qxx10LTH
Qxx08LT
Qxx08LTH
Qxx06LT
Qxx06LTH
Qxx04LT
Figure 3: On-State Current vs. On-State Voltage
(Typical) (6A to 15A)
Figure 5: Power Dissipation vs. RMS On-State Current
(Typical) (6A to 15A)
Figure 4: Power Dissipation vs. RMS On-State
Current (Typical) (4A)
Figure 6: Maximum Allowable Case Temperature
vs. RMS On-State Current
159
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Figure 7: Surge Peak On-State Current vs. Number of Cycles
Note: xx = voltage
1
10
100
1000
110 100 1000
Surge Current Duration -- Full Cycles
Peak Surge (Non-repetitive)
On-state Current (ITSM) – Amps
Qxx15LT/Qxx15LTH
Qxx04LT
Qxx10LT/Qxx10LTH
Qxx08LT/Qxx08LTH
Qxx06LT/Qxx06LTH
Supply Frequency: 60Hz Sinusoidal
Load: Resistive
RMS On-State Current: [IT(RMS)]: Maximum Rated
Value at Specific Case Temperature
Notes:
1. Gate control may be lost during and immediately
following surge current interval.
2. Overload may not be repeated until junction
temperature has returned to steady-state
rated value.
-8%
-6%
-4%
-2%
0%
2%
4%
6%
-40-20 020406080100 120 140
Junction Temperature (TJ) -- °C
V
BO
Change -- %
Figure 8: DIAC VBO Change vs. Junction Temperature
D.U.T. MT2
MT1
CT = 0.1 µF
T
VC
120 V
60 Hz
RL
∆V+
∆V-
V
C
+V
BO
-V
BO
Figure 9: Test Circuit Figure 10: Test Circuit Waveform
160
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Soldering Parameters
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)60 – 180 secs
Average ramp up rate (Liquidus Temp)
(TL) to peak 5°C/second max
TS(max) to TL - Ramp-up Rate 5°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Temperature (tL)60 – 150 seconds
Peak Temperature (TP)260°C +0/-5
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 280°C
Environmental Specifications
Test Specifications and Conditions
High Temperature
Voltage Blocking
MIL-STD-750: Method 1040, Condition A
Rated VDRM (VAC-peak), 125°C, 1008
hours
Temperature Cycling
MIL-STD-750: Method 1051
-40°C to 150°C, 15-minute dwell,
100 cycles
Biased Temperature &
Humidity
EIA/JEDEC: JESD22-A101
320VDC, 85°C, 85%RH, 1008 hours
High Temp Storage MIL-STD-750: Method 1031
150°C, 1008 hours
Low-Temp Storage -40°C, 1008 hours
Thermal Shock
MIL-STD-750: Method 1056
0°C to 100°C, 5-minute dwell,
10-second transfer, 10 cycles
Autoclave
(Pressure Cooker Test)
EIA/JEDEC: JESD22-A102
121°C, 100%RH, 2atm, 168 hours
Resistance to
Solder Heat
MIL-STD-750: Method 2031
260°C, 10 seconds
Solderability ANSI/J-STD-002, Category 3, Test A
Lead Bend MIL-STD-750: Method 2036, Condition E
Physical Specifications
Terminal Finish 1005 Matte Tin-plated
Body Material UL Recognized epoxy meeting
flammability classification 94v-0
Lead Material Copper Alloy
Design Considerations
Careful selection of the correct device for the application’s
operating parameters and environment will go a long way
toward extending the operating life of the Thyristor. Good
design practice should limit the maximum continuous
current through the main terminals to 75% of the device
rating. Other ways to ensure long life for a power discrete
semiconductor are proper heat sinking and selection of
voltage ratings for worst case conditions. Overheating,
overvoltage (including dv/dt), and surge currents are
the main killers of semiconductors. Correct mounting,
soldering, and forming of the leads also help protect
against component damage.
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
Preheat
P
r
e
h
eat
Ramp-upRamp-up
Ramp-down
R
am
p
-
do
161
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Product Selector
Part Number
Voltage
Type Package
400V 600V 800V 1000V
Qxx04LT X X Quadrac TO-220L
Qxx06LT X X Quadrac TO-220L
Qxx06LTH X X Alternistor Quadrac TO-220L
Qxx08LT X X Quadrac TO-220L
Qxx08LTH X X Alternistor Quadrac TO-220L
Qxx10LT X X Quadrac TO-220L
Qxx10LTH X X Alternistor Quadrac TO-220L
Qxx15LT X X Quadrac TO-220L
Qxx15LTH X X Alternistor Quadrac TO-220L
Note: xx = Voltage
Dimensions — TO-220AB (L-Package) — Isolated Mounting Tab
Dimension Inches Millimeters
Min Max Min Max
A 0.380 0.420 9.65 10.67
B 0.105 0.115 2.67 2.92
C 0.230 0.250 5.84 6.35
D 0.590 0.620 14.99 15.75
E 0.142 0.147 3.61 3.73
F 0.110 0.130 2.79 3.30
G0.540 0.575 13.72 14.61
H0.025 0.035 0.64 0.89
J 0.195 0.205 4.95 5.21
K 0.095 0.105 2.41 2.67
L 0.060 0.075 1.52 1.91
M 0.085 0.095 2.16 2.41
N 0.018 0.024 0.46 0.61
O 0.178 0.188 4.52 4.78
P 0.045 0.060 1. 1 4 1.52
R 0.038 0.048 0.97 1.22
K
J
A
H
G
B
F
E
C
D
L
R
T
C
MEASURING POINT
MT2
O
P
N
M
MT1 T (Trigger)
AREA (REF.)
0.17 in2
.320
8.13
.526
13.36
.276
7. 01
Note: Maximum torque
to be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
162
Revised: November 1, 2010 05:04 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
4 / 6 / 8 / 10 / 15 Amp Quadracs
QxxxxLTx Series
Packing Options
Part Number Marking Weight Packing Mode Base Quantity
Qxx04LT Qxx04LT 2.2 g Bulk 500
Qxx04LTTP Qxx04LT 2.2 g Tube 500 (50 per tube)
Qxx06LT Qxx06LT 2.2 g Bulk 500
Qxx06LTTP Qxx06LT 2.2 g Tube 500 (50 per tube)
Qxx06LTH Qxx06LTH 2.2 g Bulk 500
Qxx06LTHTP Qxx06LTH 2.2 g Tube 500 (50 per tube)
Qxx08LT Qxx08LT 2.2 g Bulk 500
Qxx08LTTP Qxx08LT 2.2 g Tube 500 (50 per tube)
Qxx08LTH Qxx08LTH 2.2 g Bulk 500
Qxx08LTHTP Qxx08LTH 2.2 g Tube 500 (50 per tube)
Qxx10LT Qxx10LT 2.2 g Bulk 500
Qxx10LTTP Qxx10LT 2.2 g Tube 500 (50 per tube)
Qxx10LTH Qxx10LTH 2.2 g Bulk 500
Qxx10LTHTP Qxx10LTH 2.2 g Tube 500 (50 per tube)
Qxx15LT Qxx15LT 2.2 g Bulk 500
Qxx15LTTP Qxx15LT 2.2 g Tube 500 (50 per tube)
Qxx15LTH Qxx15LTH 2.2 g Bulk 500
Qxx15LTHTP Qxx15LTH 2.2 g Tube 500 (50 per tube)
Note: xx = Voltage
Part Marking SystemPart Numbering System
Q60 10 LT H 56
DEVICE TYPE
Q: Quadrac
VOLTAGE RATING
40: 400V
60: 600V
CURRENT RATING
04: 4A
06: 6A
08: 8A
10: 10A
15: 15A
Trigger
T: Internal Diac (33V – 43V)
PACKAGE TYPE
L: TO-220 (Isolated)
LEAD FORM DIMENSIONS
xx: Lead Form Option
TRIAC TYPE
(blank): Standard Triac
H: Alternistor Triac
®
MY
Q6010LTH
