Teccor
®
brand Thyristors
35 Amp Standard SCRs
Sxx35x 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
• RoHS compliant
• Glass – passivated
junctions
• Voltage capability up
to 1000 V
• Surge capability up to
500 A
Agency Approval
Agency
®
Applications
Agency File Number
J & K Packages: E71639
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.
Schematic Symbol
Main Features
Symbol
I
T(RMS)
V
DRM
/V
RRM
I
GT
Value
35
400 to 1000
40
Unit
A
V
mA
A
K
G
Absolute Maximum Ratings
Symbol
I
T(RMS)
I
T(AV)
Parameter
RMS on-state current
Average on-state current
Test Conditions
T
C
= 95°C
T
C
= 95°C
single half cycle; f = 50Hz;
T
J
(initial) = 25°C
single half cycle; f = 60Hz;
T
J
(initial) = 25°C
t
p
= 8.3 ms
f = 60Hz ; T
J
= 125°C
T
J
= 125°C
T
J
= 125°C
Value
35
22.0
425
A
500
1035
150
3.5
0.8
-40 to 150
-40 to 125
A
2
s
A/μs
A
W
°C
°C
Unit
A
A
I
TSM
Peak non-repetitive surge current
I
2
t
di/dt
I
GM
P
G(AV)
T
stg
T
J
I
2
t Value for fusing
Critical rate of rise of on-state current
Peak gate current
Average gate power dissipation
Storage temperature range
Operating junction temperature range
Sxx35x Series
279
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
35 Amp Standard SCRs
Electrical Characteristics
(T
J
= 25°C, unless otherwise specified)
Symbol
I
GT
V
GT
400V
V
D
= V
DRM
; gate open; T
J
= 100°C
dv/dt
600V
800V
1000V
400V
V
D
= V
DRM
; gate open; T
J
= 125°C
V
GD
I
H
t
q
t
gt
V
D
= V
DRM
; R
L
= 3.3 kΩ;
T
J
= 125°C
I
T
= 400mA (initial)
(1)
I
G
= 2 x I
GT
; PW = 15µs; I
T
= 70A
600V
800V
MIN.
MAX.
MAX.
TYP
.
MIN.
V
D
= 12V; R
L
= 30Ω
Test Conditions
MAX.
MIN.
MAX.
Value
40
5
1.5
450
425
400
200
350
325
300
0.2
50
35
2
V
mA
μs
μs
V/μs
Unit
mA
V
Notes :
(1) I
T
=2A; t
p
=50µs; dv/dt=5V/µs; di/dt=-30A/µs
Static Characteristics
Symbol
V
TM
Test Conditions
I
T
= 70A; t
p
= 380μs
T
J
= 25°C
400 – 600V
800 – 1000V
400 – 600V
I
DRM
/ I
RRM
V
DRM
/ V
RRM
T
J
= 100°C
800V
1000V
T
J
= 125°C
400 – 600V
800V
MAX.
MAX.
Value
1.8
10
20
1000
1500
3000
2000
3000
μA
Unit
V
Thermal Resistance
Symbol
R
θ(J-C)
Parameter
Junction to case (AC)
Value
0.7
Unit
°C/W
Sxx35x Series
280
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
35 Amp Standard SCRs
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
2.0
Figure 2: Normalized DC Gate Trigger Voltage
vs. Junction Temperature
2.0
1.5
Ratio of V
GT
/ V
GT
(T
J
= 25°C)
Ratio of I
GT
/ I
GT
(T
J
= 25°C)
1.5
1.0
1.0
0.5
0.5
0.0
-40
-15
0.0
Junction Temperature (T
J
) -- (°C)
10
35
60
85
110
125
-40
-15
10
35
60
85
110
125
Junction Temperature (T
J
) -- (°C)
Figure 3: Normalized DC Holding Current
vs. Junction Temperature
2.0
Figure 4: On-State Current vs. On-State
Voltage (Typical)
120
Instantaneous On-state Current (i
T
) – Amps
T
J
= 25°C
100
Ratio of I
H
/ I
H
(T
J
= 25°C)
1.5
80
1.0
60
40
0.5
20
0.0
0
-40
-15
10
35
60
85
110
125
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
Junction Temperature (T
J
) -- (°C)
Instantaneous On-state Voltage (v
T
) – Volts
Figure 5: Power Dissipation (Typical)
vs. RMS On-State Current
30
Figure 6: Maximum Allowable Case Temperature
vs. RMS On-State Current
130
125
Average On-State Power Dissipation
[P
D(AV)
] - (Watts)
Maximum Allowable Case
Temperature (T
C
) - °C
25
120
115
110
105
100
95
90
85
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
0
5
10
15
20
25
30
35
40
20
15
10
5
0
0
5
10
15
20
25
30
35
80
RMS On-State Current [I
T(RMS)
] - (Amps)
RMS On-State Current [I
T(RMS)
] - Amps
Sxx35x Series
281
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
35 Amp Standard SCRs
Figure 7: Maximum Allowable Case Temperature vs.
Average On-State Current
130
Figure 8: Peak Capacitor Discharge Current
1000
Maximum Allowable Case
Temperature (T
C
) - °C
120
115
110
105
100
95
90
85
80
0
5
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
10
15
20
25
Peak Discharge Current (I
TM
) - Amps
125
100
I
TRM
t
W
10
Average On-State Current [I
T(AVE)
] - Amps
0.5
1.0
10.0
50.0
Pulse Current Duration (t
w
) - ms
Figure 9: Peak Capacitor Discharge Current Derating
1.2
1.0
Normalized Peak Current
0.8
0.6
0.4
0.2
0.0
0
25
50
75
100
125
150
Case Temperature (T
C
) - °C
Figure 10: Surge Peak On-State Current vs. Number of Cycles
1000
Peak Surge (Non-repetitive)
On-state Current (I
TSM
) – Amps
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.
100
10
1
10
100
1000
Surge Current Duration -- Full Cycles
Sxx35x Series
282
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
35 Amp Standard SCRs
Soldering Parameters
Reflow Condition
- Temperature Min (T
s(min)
)
Pre Heat
- Temperature Max (T
s(max)
)
- Time (min to max) (t
s
)
Average ramp up rate (Liquidus Temp)
(T
L
) to peak
T
S(max)
to T
L
- Ramp-up Rate
Reflow
- Temperature (T
L
) (Liquidus)
- Temperature (t
L
)
Pb – Free assembly
T
P
Temperature
t
P
Ramp-up
150°C
200°C
60 – 180 secs
5°C/second max
5°C/second max
217°C
60 – 150 seconds
260
+0/-5
T
L
T
S(max)
t
L
Preheat
Ramp-do
Ramp-down
T
S(min)
t
S
time to peak temperature
25
Time
Peak Temperature (T
P
)
Time within 5°C of actual peak
Temperature (t
p
)
Ramp-down Rate
Time 25°C to peak Temperature (T
P
)
Do not exceed
°C
20 – 40 seconds
5°C/second max
8 minutes Max.
280°C
Physical Specifications
Terminal Finish
Body Material
Lead Material
100% Matte Tin-plated
UL recognized epoxy meeting flammability
classification 94V-0
Copper Alloy
Environmental Specifications
Test
AC Blocking
Temperature Cycling
Temperature/
Humidity
High Temp Storage
Low-Temp Storage
Thermal Shock
Specifications and Conditions
MIL-STD-750, M-1040, Cond A Applied
Peak AC voltage @ 125°C for 1008 hours
MIL-STD-750, M-1051,
100 cycles; -40°C to +150°C;
15-min dwell-time
EIA / JEDEC, JESD22-A101
1008 hours; 320V - DC: 85°C;
85% rel humidity
MIL-STD-750, M-1031,
1008 hours; 150°C
1008 hours; -40°C
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
EIA / JEDEC, JESD22-A102
168 hours (121°C at 2 ATMs) and
100% R/H
MIL-STD-750 Method 2031
ANSI/J-STD-002, category 3, Test A
MIL-STD-750, M-2036 Cond E
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.
Autoclave
Resistance to
Solder Heat
Solderability
Lead Bend
Sxx35x Series
283
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
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