Page 1
Page 2
305©2010 Littelfuse, Inc
Revised: May 10, 2010 09:33 PM
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Sxx65x & Sxx70x Series
65 / 70 Amp Standard SCRs
6
5
/7
0
A
S
C
R
s
Sxx65x & Sxx70x Series
Description
Excellent unidirectional switches for phase control
applications such as heating and motor speed controls.
Standard phase control SCRs are triggered with few
milliamperes of current at less than 1.5V potential.
Features & Benefits
junctions
to 1000 V
950 A
Schematic Symbol
Main Features
Symbol Value Unit
I
T(RMS)
65 & 70 A
V
DRM
/V
RRM
400 to 1000 V
I
GT
50 mA
Absolute Maximum Ratings
Symbol Parameter Test Conditions Value Unit
I
T(RMS)
RMS on-state current
Sxx65J
Sxx65K
T
C
= 75°C 65
A
Sxx70W T
C
= 80°C 70
I
T(AV)
Average on-state current
Sxx65J
Sxx65K
TC = 75°C 41.0 A
Sxx70W T
C
= 80°C 45.0 A
I
TSM
Peak non-repetitive surge current
single half cycle; f = 50Hz;
T
J
(initial) = 25°C
800
A
single half cycle; f = 60Hz;
T
J
(initial) = 25°C
950
I2t I2t Value for fusing t
p
= 8.3 ms 3745 A2s
di/dt Critical rate of rise of on-state current f = 60Hz ; T
J
= 125°C 200 A/μs
I
GM
Peak gate current
T
J
= 125°C
P
W
= μS
5.0 A
P
G(AV)
Average gate power dissipation T
J
= 125°C 1.0 W
T
stg
Storage temperature range -40 to 150 °C
T
J
Operating junction temperature range -40 to 125 °C
Applications
Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.
Internally constructed isolated packages are offered for
ease of heat sinking with highest isolation voltage.
A K
G
Agency Approval
Agency Agency File Number
®
J & K Packages: E71639
®
Page 3
306
Revised: May 10, 2010 09:33 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
65 / 70 Amp Standard SCRs
Sxx65x & Sxx70x Series
Electrical Characteristics (T
J
= 25°C, unless otherwise specified)
Symbol Test Conditions Value Unit
I
GT
V
D
= 12V; R
L
= 30
MAX. 50
mA
MIN. 5
V
GT
MAX. 2.0 V
dv/dt
V
D
= V
DRM
; gate open; T
J
= 100°C
400V
MIN.
650
V/μs
600V 600
800V 500
1000V 250
V
D
= V
DRM
; gate open; T
J
= 125°C
400V 550
600V 500
800V 475
V
GD
V
D
= V
DRM
; R
L
= 3.3 k ; T
J
= 125°C MIN. 0.2 V
I
H
I
T
= 400mA (initial) MAX. 80 mA
t
q
(1) MAX. 35 μs
t
gt
I
G
= 2 x I
GT
; PW = 15μs; I
T
= 140A TYP. 2.5 μs
Note :
(1) I
T
=2A; t
p
=50μs; dv/dt=5V/μs; di/dt=-30A/μs
Thermal Resistances
Symbol Parameter Value Unit
R
(J-C)
Junction to case (AC)
Sxx65J
Sxx65K
0.86
°C/W
Sxx70W 0.6
Note: xx = voltage
Static Characteristics
Symbol Test Conditions Value Unit
V
TM
65A Device I
T
= 130A; t
p
= 380μs
MAX. 1.8 V
70A Device I
T
= 140A; t
p
= 380μs
I
DRM
/ I
RRM
V
DRM
/ V
RRM
T
J
= 25°C
400 – 800V
MAX.
20
μA
1000 V 30
T
J
= 100°C
400 – 600V 1500
800V 2000
1000V 5000
T
J
= 125°C
400V – 600V 3000
800V 5000
Page 4
307©2010 Littelfuse, Inc
Revised: May 10, 2010 09:33 PM
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Sxx65x & Sxx70x Series
65 / 70 Amp Standard SCRs
6
5
/7
0
A
S
C
R
s
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
Figure 2: Normalized DC Gate Trigger Voltage
vs. Junction Temperature
0.0
0.5
1.0
1.5
2.0
-40 -15 10 35 60 85 110
R
a
ti
o
o
f
I G
T
/
I G
T
(
T
J
=
2
5
°C
)
Junction Temperature (T
J
) -- (°C)
125
Figure 5: Power Dissipation (Typical)
vs. RMS On-State Current
Figure 6: Maximum Allowable Case Temperature
vs. RMS On-State Current
Figure 3: Normalized DC Holding Current
vs. Junction Temperature
Figure 4: On-State Current vs. On-State
Voltage (Typical)
0.0
0.5
1.0
1.5
2.0
-40 -15 10 35 60 85 110
R
a
ti
o
o
f V
G
T
/
V
G
T
(
T
J
=
2
5
°C
)
Junction Temperature (T
J
) -- (°C)
125
0.0
0.5
1.0
1.5
2.0
-40 -15 10 35 60 85 110
R
a
ti
o
o
f
I H
/
I H
(
T
J
=
2
5
°C
)
Junction Temperature (T
J
) -- (°C)
125
0
20
40
60
80
100
120
140
160
180
200
0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6
In
s
ta
n
ta
n
e
o
u
s
O
n
-s
ta
te
C
u
rr
e
n
t
(i
T
)
–
A
m
p
s
Instantaneous On-state Voltage (v
T
) – Volts
T
J
= 25°C
0
10
20
30
40
50
60
0 10 20 30 40 50 60 70
A
v
e
ra
g
e
O
n
-S
ta
te
P
o
w
e
r
D
is
s
ip
a
ti
o
n
[P
D
(
A
V
)]
-
(
W
a
tt
s
)
RMS On-State Current [I
T(R MS)
] - (Am ps)
70
75
80
85
90
95
100
105
110
115
120
125
130
0 10 20 30 40 50 60 70 80
M
a
x
im
u
m
A
ll
o
w
a
b
le
C
a
s
e
T
e
m
p
e
ra
tu
re
(T
C
)-
°C
RMS On-State Current [I
T(RMS)
] - Amps
Sxx70W
Sxx65K
Sxx65J
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
The "K" package rating with its narrow leads is intended
for high surge condition use only and not recom-
mended for >50A rms continuous current use since lead
temperature depending on lead length can exceed PCB
solder melting temperature. "J" or "W" packages are
recommended for >50A rms continuous current require-
ments.
Note: xx = voltage
Page 5
308
Revised: May 10, 2010 09:33 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
65 / 70 Amp Standard SCRs
Sxx65x & Sxx70x Series
Figure 7: Maximum Allowable Case Temperature vs. Average On-State Current
70
75
80
85
90
95
100
105
110
115
120
125
130
0 5 10 15 20 25 30 35 40 45 50
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
Sxx65K
Sxx65J
M
a
x
im
u
m
A
ll
o
w
a
b
le
C
a
s
e
T
e
m
p
e
ra
tu
re
(T
C
)
-
°C
Average On-State Current [I
T(AVE)
] - Amps
Sxx70W
The "K" package rating with its narrow leads is
intended for high surge condition use only and not
recommended for >32A (AV) continuous current use
since lead temperature depending on lead length can
exceed PCB solder melting temperature. "J" or "W"
packages are recommended for >32A (AV) continu-
ous current requirements.
10
100
1000
1 10 100 1000
Sxx65K
Sxx65J
Sxx70W
Surge Current Duration -- Full Cycles
P
e
a
k
S
u
rg
e
(
N
o
n
-r
e
p
e
ti
ti
v
e
)
O
n
-s
ta
te
C
u
rr
e
n
t
(I
T
S
M
)
–
A
m
p
s
Figure 10: Surge Peak On-State Current vs. Number of Cycles
SUPPLY FREQUENCY: 60 Hz Sinusoidal
LOAD: Resistive
RMS On-State Current: [I
T(RMS)
]: Maximum Rated
Value at Specified 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.
Figure 8: Peak Capacitor Discharge Current Figure 9: Peak Capacitor Discharge Current Derating
100
1000
10000
0.5 1.0 10.0 50.0
P
e
a
k
D
is
ch
a
rg
e
C
u
rr
e
n
t
(I
T
M
)
-
A
m
p
s
Pulse Current Duration (t
w
) - ms
I
TRM
t
W
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0 25 50 75 100 125 150
N
o
rm
a
li
ze
d
P
e
a
k
C
u
rr
e
n
t
Case Temperature (T
C
) - °C
Note: xx = Voltage
Page 6
309©2010 Littelfuse, Inc
Revised: May 10, 2010 09:33 PM
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Sxx65x & Sxx70x Series
65 / 70 Amp Standard SCRs
6
5
/7
0
A
S
C
R
s
Soldering Parameters
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (T
s(min)
) 150°C
- Temperature Max (T
s(max)
) 200°C
- Time (min to max) (t
s
) 60 – 180 secs
Average ramp up rate (Liquidus Temp)
(T
L
) to peak
5°C/second max
T
S(max)
to T
L
- Ramp-up Rate 5°C/second max
Reflow
- Temperature (T
L
) (Liquidus) 217°C
- Temperature (t
L
) 60 – 150 seconds
Peak Temperature (T
P
) 260+0/-5 °C
Time within 5°C of actual peak
Temperature (t
p
)
20 – 40 seconds
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (T
P
) 8 minutes Max.
Do not exceed 280°C
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
Thermal Shock
MIL-STD-750, M-1056
10 cycles; 0°C to 100°C; 5-min dwelltime
at each temperature; 10 sec (max) transfer
time between temperature
Autoclave
EIA / JEDEC, JESD22-A102
168 hours (121°C at 2 ATMs) and
100% R/H
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
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
T
e
m
p
e
ra
tu
re
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
Preheat
Ramp-up
Ramp-down
Page 7
310
Revised: May 10, 2010 09:33 PM
©2010 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
65 / 70 Amp Standard SCRs
Sxx65x & Sxx70x Series
Dimensions – TO-218X (W Package) — Non-Isolated Mounting Tab
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 0.256 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 0.164 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
Y H
D
C
K
B
A
E
F
N
T
M P
J
L
S
V
U (diameter)
W X
CATHODE
ANODE
ANODE
Tc
Measurement
Point
GATE
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
Z
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 0.164 0.165 4.10 4.20
W 0.085 0.095 2.17 2.42
C
D
H
G
F
B
A
E
Tc Measurement Point
U (diameter)
P
GATE
J
ANODE
CATHODE
M
N
K
L
R
Q
Note: Maximum torque
to be applied to mounting
tab is 8 in-lbs. (0.904 Nm).
W
Page 8
311©2010 Littelfuse, Inc
Revised: May 10, 2010 09:33 PM
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Sxx65x & Sxx70x Series
65 / 70 Amp Standard SCRs
6
5
/7
0
A
S
C
R
s
Dimensions – TO-218X (J Package) — Isolated Mounting Tab Common with Center Lead
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 0.164 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
Product Selector
Part Number
Voltage
Gate Sensitivity Type Package
400V 600V 800V 1000V
Sxx65K X X X X 50mA Standard SCR TO-218AC
Sxx65J X X X 50mA Standard SCR TO-218X
Sxx70W X X X 50mA Standard SCR TO-218X
Note: xx = Voltage
Packing Options
Part Number Marking Weight Packing Mode Base Quantity
Sxx65KTP Sxx65K 4.40g Tube 250 (25 per tube)
Sxx65JTP Sxx65J 5.23g Tube 250 (25 per tube)
Sxx70WTP Sxx70W 5.23g Tube 250 (25 per tube)
Note: xx = Voltage
G
R
Y H
D
C
K
B
A
E
F
N
T
M P
J
L
S
V
U (diameter)
W X
CATHODE
Tc
Measurement
Point
GATE
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
Z
ANODE
