Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
Qxx40xx Series
Description
The 40 Amp bi-directional solid state switch series is
designed for AC switching and phase control applications
such as motor speed, temperature modulation controls,
lighting controls, and static switching relays.
Alternistor type components only operate in quadrants I, II,
& III and are used in circuits requiring high dv/dt capability.
Standard type devices operate in quadrants I,II,III & IV.
Main Features
Symbol Value Unit
IT(RMS) 40 A
VDRM/VRRM 400 to 1000 V
IGT (Q1) 35 to 100 mA
Features & Benefits
• RoHS Compliant
• Glass – passivated
junctions
• Voltage capability up to
1000V
• Surge capability up to
400A
• Electrically isolated
K & J -Packages are UL
Recognized for 2500Vrms
Applications
Excellent for AC switching and phase control applications
such as heating, lighting, and motor speed controls.
Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.
Alternistor Triacs (no snubber required) are used in
applications with extremely inductive loads requiring
highest commutation performance.
Internally constructed isolated packages are offered for
ease of heat sinking with highest isolation voltage.
Schematic Symbol
Agency Approval
Agency Agency File Number
E71639*
* - K and J Packages
MT1
G
MT2
RoHS
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
Absolute Maximum Ratings – Standard Triac (4 Quadrants)
Symbol Parameter Test Conditions Value Unit
IT(RMS) RMS on-state current Qxx40x3/Qxx40x4 TC = 75 °C 40 A
ITSM Peak non-repetitive surge current f = 50 Hz t = 20 ms 335 A
f = 60 Hz t = 16 ms 400
I2t I2t Value for fusing tp = 8.3 ms 664 A2s
di/dt Critical rate-of-rise of on-state current f = 120 Hz; TJ =125 °C 150 A/μs
IGTM Peak gate current tp=20μs TJ = 125 °C 4 A
PG(AV) Average gate power dissipation TJ = 125°C 0.5 W
Tstg Storage temperature range -40 to 150 °C
TJOperating junction temperature range -40 to 125 °C
Symbol Parameter Value Unit
IT(RMS) RMS on-state current (full sine wave) Qxx40x7
Qxx40xH6 TC = 75 °C 40 A
ITSM
Non repetitive surge peak on-state current
(full cycle, TJ initial = 25°C)
f = 50 Hz t = 20 ms 335 A
f = 60 Hz t = 16.7 ms 400
I2t I2t Value for fusing tp = 8.3 ms 664 A2s
di/dt Critical rate of rise of on-state current
(IG = 2 x IGT, tr ≤ 100 ns) f = 120 Hz TJ = 125 °C 150 A/μs
IGTM Peak gate trigger current tp=20μs TJ = 125 °C 4 A
PG(AV) Average gate power dissipation TJ = 125 °C 0.5 W
Tstg Storage temperature range -40 to 150 °C
TJ Operating junction temperature range -40 to 125 °C
Absolute Maximum Ratings – Alternistor Triac (3 Quadrants)
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
Static Characteristics
Symbol Test Conditions Value Unit
VTM ITM = 56.6A tp = 380 µs TJ = 25°C MAX. 1.8 V
IDRM
IRRM
VD = VDRM / VRRM
TJ = 25°C 400 –1000V MAX. 20 μA
TJ = 125°C 400 – 800V MAX. 5 mA
TJ = 100°C 1000V MAX. 5 mA
Symbol Test Conditions Quadrant Qxx40x3
Value
Unit
Qxx40x4
IGT VD = 12 V; RL = 60 Ω I – II – III MAX. 35 50 mA
IV MAX. 70 100
VGT VD = 12 V; RL = 60 Ω ALL MAX. 1.3 1.3 V
VGD VD = VDRM; RL = 3.3 kΩ ; TJ = 125 °C ALL MIN. 0.2 0.2 V
IHIT = 400mA (initial) MAX. 80 80 mA
dv/dt VD = VDRM; Gate Open; TJ = 125 °C
400V
MIN.
400 400
V/μs600V 400 400
800V 400 400
(dv/dt)c (di/dt)c = 4.3 A/ms; TJ = 125 °C MIN. 10 10 V/μs
tgt IG = 2 x IGT; PW = 15µs; IT = 35.4 A TYP. 5 5 μs
Electrical Characteristics (TJ = 25°C, unless otherwise specified) — Standard Triac (4 Quadrants)
Symbol Test Conditions Quadrant Value Unit
Qxx40xH6 Qxx40K5 Qxx40x7
IGT VD = 12V RL = 60 Ω I – II – III MAX. 80 50 100 mA
VGT VD = 12V RL = 60 Ω I – II – III MAX. 1.3 1.3 2.0 V
VGD VD = VDRM RL = 3.3 kΩ TJ = 125°C I – II – III MIN. 0.2 V
IHIT = 400mA MAX. 80 75 100 mA
dv/dt VD = VDRM Gate Open TJ = 125°C
400V
MIN.
600 500 700
V/μs
600V 500 475 625
800V 475 400 575
VD = VDRM Gate Open TJ = 100°C 1000V - - 500
(dv/dt)c (di/dt)c = 21.6 A/ms TJ = 125°C MIN. 30 20 50 V/µs
tgt IG = 2 x IGT PW = 15µs IT = 56.6A(pk) TYP. 5 µs
Electrical Characteristics (TJ = 25°C, unless otherwise specified) — Alternistor Triac (3 Quadrants)
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
Figure 3: Normalized DC Holding Current
vs. Junction Temperature
Figure 4: Normalized DC Gate Trigger Voltage for
All Quadrants vs. Junction Temperature
+ 125
0.0
1.0
2.0
3.0
4.0
-40 -15 10 35 60 85 110
Ratio of I
IH
/ I
IH
(T
J
= 25°C)
Junction Temperature - °C
+125
0.0
0.5
1.0
1.5
2.0
-40- 15 10 35 60 85 110
Ratio of VGT / VGT (TJ = 25°C)
Junction Temperature - °C
Note: Alternistors will not operate in QIV
Figure 1: Definition of Quadrants
MT2 POSITIVE
(Positive Half Cycle)
MT2 NEGATIVE
(Negative Half Cycle)
NOTE: Alternistors will not operate in QIV
MT1
MT2
+ I
GT
REF QII
MT1
IGT
GATE
MT2
REF
MT1
MT2
REF
MT1
MT2
REF
QI
QIV
QIII
ALL POLARITIES ARE REFERENCED TO MT1
(-)
IGT
GATE
(+)
I
GT -
IGT
GATE
(-)
IGT
GATE
(+)
+
-+125
0.0
1.0
2.0
3.0
4.0
-40 -15 10 35 60 85 110
Junction Temperature -- (°C)
Ratio of IGT / IGT (TJ = 25°C)
Figure 2: Normalized DC Gate Trigger Current for
All Quadrants vs. Junction Temperature
Symbol Parameter Value Unit
RƟ(J-C) Junction to case (AC)
Qxx40KH6
Qxx40K5/7
Qxx40K4
Qxx40K3
0.97
°C/W
Qxx40JH6
Qxx40J7 0.95
Note: xx = voltage
Thermal Resistances
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
110100 1000
10
Surge Current Duration – Full Cycles
1
Peak Surge (Non-repetitive) On-State Current
(ITSM ) – Amps
100
1000
Figure 8: Surge Peak On-State Current vs. Number of Cycles
Supply Frequency: 60Hz Sinusoidal
Load: Resistive
RMS On-State [IT(RMS)]: Max 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.
TC = 25ºC
0
10
20
30
40
50
60
70
80
90
0.6 0.8 1.0 1.2 1.4 1.6
Positive or Negative Instantaneous On-State Voltage (vT) - Volts
Positive or Negative Instantaneous
On-State Current (iT) - AMPS
Figure 7: On-State Current vs. On-State Voltage (Typical)
0
5
10
15
20
25
30
35
40
45
0 4 8 12 16 20 24 28 32 36 40
RMS On-State Current [IT(RMS)] - AMPS
Average On-State Power Dissipation
[P
D (AV)
] - Watts
50
60
70
80
90
100
110
120
130
0 5 10 15 20 25 30 35 40 45 50
RMS On-State Current [IT(RMS)] - AMPS
Max Allowable Case Temperature
(TC) - ºC
Figure 5: Power Dissipation (Typical)
vs. RMS On-State Current
Figure 6: Maximum Allowable Case Temperature
vs. On-State Current
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
Physical Specifications
Environmental Specifications
Test Specifications and Conditions
AC Blocking MIL-STD-750, M-1040, Cond A Applied
Peak AC voltage @ 125°C for 1008 hours
Temperature Cycling
MIL-STD-750, M-1051,
100 cycles; -40°C to +150°C; 15-min
dwell-time
Temperature/
Humidity
EIA / JEDEC, JESD22-A101
1008 hours; 320V - DC: 85°C; 85%
rel humidity
High Temp Storage MIL-STD-750, M-1031,
1008 hours; 150°C
Low-Temp Storage 1008 hours; -40°C
Resistance to
Solder Heat MIL-STD-750 Method 2031
Solderability ANSI/J-STD-002, category 3, Test A
Lead Bend MIL-STD-750, M-2036 Cond E
Terminal Finish 100% Matte Tin-plated.
Body Material UL Recognized compound meeting
flammability rating V-0
Lead Material Copper Alloy
Design Considerations
Careful selection of the correct component 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 component 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.
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
- Time (min to max) (ts)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
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
Soldering Parameters
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
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
Dimensions — TO-218AC (K Package) — Isolated Mounting Tab
Dimension Inches Millimeters
Min Max Min Max
A 0.810 0.835 20.57 21.21
B 0.610 0.630 15.49 16.00
C 0.178 0.188 4.52 4.78
D 0.055 0.070 1.40 1.78
E 0.487 0.497 12.37 12.62
F 0.635 0.655 16.13 16.64
G 0.022 0.029 0.56 0.74
H 0.075 0.095 1.91 2.41
J 0.575 0.625 14.61 15.88
K 0.211 0.219 5.36 5.56
L 0.422 0.437 10.72 11. 10
M 0.058 0.068 1.47 1.73
N 0.045 0.055 1. 14 1.40
P 0.095 0.115 2.41 2.92
Q 0.008 0.016 0.20 0.41
R 0.008 0.016 0.20 0.41
U 0.161 0.165 4.10 4.20
W 0.085 0.095 2.17 2.42
C
D
H
G
F
B
A
E
T
C Measurement Point
U (diameter)
P
Gate
J
MT2
MT1
M
N
K
L
R
Q
Note: Maximum torque
to be applied to mounting
tab is 8 in-lbs. (0.904 Nm).
W
Dimensions — TO-218X (J Package) — Isolated Mounting Tab
Dimension Inches Millimeters
Min Max Min Max
A 0.810 0.835 20.57 21.21
B 0.610 0.630 15.49 16.00
C 0.178 0.188 4.52 4.78
D 0.055 0.070 1.40 1.78
E 0.487 0.497 12.37 12.62
F 0.635 0.655 16.13 16.64
G 0.022 0.029 0.56 0.74
H 0.075 0.095 1.91 2.41
J 0.575 0.625 14.61 15.88
K 0.256 0.264 6.50 6.71
L 0.220 0.228 5.58 5.79
M 0.080 0.088 2.03 2.24
N 0.169 0.177 4.29 4.49
P 0.034 0.042 0.86 1.07
R 0.113 0.121 2.87 3.07
S 0.086 0.096 2.18 2.44
T 0.156 0.166 3.96 4.22
U 0.161 0.165 4.10 4.20
V 0.603 0.618 15.31 15.70
W 0.000 0.005 0.00 0.13
X 0.003 0.012 0.07 0.30
Y 0.028 0.032 0.71 0.81
Z 0.085 0.095 2.17 2.42
G
R
YH
D
C
K
B
A
EF
N
T
MP
J
L
S
V
U DIA.
WX
MT1
MT2
Tc
Measurement
Point
Gate
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
Z
Thyristors
40 Amp Alternistor (High Commutation) and Standard Triacs
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 12/04/18
DEVICE TYPE
Q :
Alternistor Triac
CURRENT
40 : 40A
PACKAGE TYPE
K : TO-218AC Isolated
J : TO-218X Isolated
VOLTAGE
40 : 400V
60 : 600V
80 : 800V
K0 : 1000V
SENSITIVITY & TYPE
Standard Triac:
3: 35mA (QI,QII,QIII)
70mA(QIV)
4: 50mA(QI,QII,QIII)
100mA(QIV)
Alternistor Triac:
H6: 80mA (QI, QII, QIII)
7 : 100mA (QI, II, III)
5: 50mA (QI, QII, QIII)
Q 60 40 K 7
Part Numbering System Part Marking System
TO-218 AC - (K Package)
TO-218 X - (J Package)
®
YMLXX
Q6040K7
Packing Options
Part Number Marking Weight Packing Mode Base Quantity
Qxx40KH6TP Qxx40KH6 4.40 g Tube Pack 250 (25 per tube)
Qxx40JH6TP Qxx40JH6 5.23 g Tube Pack 250 (25 per tube)
Qxx40K5TP Qxx40K5 4.40 g Tube Pack 250 (25 per tube)
Qxx40K7TP Qxx40K7 4.40 g Tube Pack 250 (25 per tube)
Qxx40J7TP Qxx40J7 5.23 g Tube Pack 250 (25 per tube)
Qxx40K4TP Qxx40K4 4.40 g Tube Pack 250 (25 per tube)
Qxx40K3TP Qxx40K3 4.40g Tube Pack 250(25 per tube)
Note: xx = Voltage
Product Selector
Part Number Voltage Gate Sensitivity Quadrants IT(RMS) Type Package
400V 600V 800V 1000V I – II – III IV
Qxx40KH6 X X X X 80 mA - 40 A Alternistor Triac TO-218AC
Qxx40JH6 X X X - 80 mA - 40 A Alternistor Triac TO-218X
Qxx40K5 X X X - 50 mA - 40 A Alternistor Triac TO-218AC
Qxx40K7 X X X X 100 mA - 40 A Alternistor Triac TO-218AC
Qxx40J7 X X X - 100 mA - 40 A Alternistor Triac TO-218X
Qxx40K4 X X X - 50 mA 100 mA 40 A Standard Triac TO-218AC
Qxx40K3 - - X - 35 mA 70 mA 40 A Standard Triac TO-218AC
Note: xx = Voltage
Mouser Electronics
Authorized Distributor
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Q8040K7 QK040K7 Q8040K5 Q6040J7TP Q8040K7TP Q2040J7TP Q2040K7TP Q4040J7TP Q4040K7TP
Q8040J7TP Q8040K5TP QK040K7TP Q6040J781TP Q6040K7TP Q6040K5TP Q6040PH5-E Q6040PH5-C
Q6040PH5-W
