Teccor
®
brand Thyristors
12 Amp Standard SCRs
Sxx12x 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
to 1000 V
junctions
120 A
Main Features
Symbol
I
T(RMS)
V
DRM
/V
RRM
I
GT
Value
12
400 to 1000
20
Unit
A
V
mA
Applications
Typical applications are capacitive discharge systems for
strobe lights, nailers, staplers and gas engine ignition. Also
controls for power tools, home/brown goods and white
goods appliances.
Schematic Symbol
A
K
G
Absolute Maximum Ratings
Symbol
I
T(RMS)
Parameter
RMS on-state current
Test Conditions
Sxx12R
Sxx12D
Sxx12V
Sxx12R
Sxx12D
Sxx12V
T
C
= 105°C
Value
12
Unit
A
I
T(AV)
Average on-state current
T
C
=105°C
7
.6
A
I
TSM
Peak non-repetitive surge current
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
100
A
120
60
100
2
0.5
-40 to 150
-40 to 125
A
2
s
A/μs
A
W
°C
I
2
t
di/dt
I
GM
P
G(AV)
T
stg
T
J
Note: xx = voltage
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
Sxx12x Series
279
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 09/23/13
Teccor
®
brand Thyristors
12 Amp Standard SCRs
Electrical Characteristics
(T
J
= 25°C, unless otherwise specified)
Symbol
I
GT
V
GT
V
D
= 12V R
L
= 60
:
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
600V
800V
V
GD
I
H
t
q
t
gt
V
D
= V
DRM
R
L
= 3.3 k: T
J
= 125°C
I
T
= 200mA (initial)
I
T
= 2A; t
p
= 50μs; dv/dt = 5V/μs; di/dt = 30A/μs
I
G
= 2 x I
GT
PW = 15μs I
T
= 20A
MIN.
MAX.
MAX.
TYP
.
MIN.
Test Conditions
MAX.
MIN.
MAX.
Value
20
1
1.5
350
300
250
100
250
225
200
0.2
40
35
2
V
mA
μs
μs
V/μs
Unit
mA
V
Static Characteristics
Symbol
V
TM
Test Conditions
I
T
= 24A; t
p
= 380 μs
T
J
= 25°C
I
DRM
/ I
RRM
V
DRM
= V
RRM
MAX.
T
J
= 100°C
T
J
= 125°C
1000V
MAX.
Value
1.6
10
20
500
3000
1000
μA
Unit
V
Thermal Resistances
Symbol
Parameter
Sxx12R
R
T(J-C)
Junction to case (AC)
Sxx12V
Sxx12D
Sxx12R
R
T(J-A)
Note: xx = voltage
Value
1.5
1.6
1.4
40
Unit
°C/W
Junction to ambient
Sxx12V
70
°C/W
Sxx12x Series
280
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 09/23/13
Teccor
®
brand Thyristors
12 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
Ratio of I
GT
/ I
GT
(T
J
= 25°C)
Ratio of V
GT
/ V
GT
(T
J
= 25°C)
1.5
1.5
1.0
1.0
0.5
0.5
0.0
-40
-15
10
35
60
85
100
125
0.0
-40
-15
10
35
60
85
110
125
Junction Temperature (T
J
) - (°C)
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)
60
T
J
= 25°C
50
Ratio of I
H
/ I
H
(T
J
= 25°C)
1.5
Instantaneous On-state
Current (i
T
) – Amps
-40
-15
10
35
60
85
110
125
40
1.0
30
20
0.5
10
0.0
0
0.6
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
12
10
Average On-State Power
Dissipation [P
D(AV)
] - (Watts)
8
6
4
2
0
0
2
4
6
8
10
12
RMS On-State Current [I
T(RMS
)] - (Amps)
Sxx12x Series
281
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 09/23/13
Teccor
®
brand Thyristors
12 Amp Standard SCRs
Figure 6: Maximum Allowable Case Temperature
vs. RMS On-State Current
130
Figure 7: Maximum Allowable Case Temperature
vs. Average On-State Current
130
125
125
Maximum Allowable
Case Temperature (T
C
)- °C
120
Maximum Allowable Case
Temperature (T
C
) - °C
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
0
2
4
6
8
10
12
14
120
115
115
110
110
105
105
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
0
1
2
3
4
5
6
7
8
100
100
95
95
RMS On-State Current [I
T(RMS)
] - Amps
Average On-State Current [I
T(AVE)
] - Amps
Figure 8: Maximum Allowable Ambient Temperature
vs. RMS On-State Current
120
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
Figure 9: Maximum Allowable Ambient Temperature
vs. Average On-State Current
120
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
Maximum Allowable Ambient
Temperature (T
A
) - °C
Maximum Allowable Ambient
Temperature (T
A
) - °C
100
100
80
Sxx12R
80
Sxx12R
60
Sxx12V
60
Sxx12V
40
40
20
20
0
0.0
0.5
1.0
1.5
2.0
2.5
0
0.0
0.
5
1.0
1.
5
RMS On-State Current [I
T(RMS)
] - Amps
Note: xx = voltage
Average On-State Current [I
T(AVE)
] - Amps
Figure 10: Peak Capacitor Discharge Current
1000
Figure 11: Peak Capacitor Discharge Current Derating
1.2
Peak Discharge Current (I
TM
) - Amps
1.0
Normalized Peak Current
I
TRM
t
W
0.8
100
0.6
0.4
0.2
10
0
5
.
0.0
5
.0
2
5
.0
5
0.0
0
25
50
75
100
125
150
Pulse Current Duration (t
w
) - ms
Case Temperature (T
C
) - °C
Sxx12x Series
282
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 09/23/13
Teccor
®
brand Thyristors
12 Amp Standard SCRs
Figure 12: 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
100
10
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.
1
1
10
10 0
10 0 0
Surge Current Duration - Full Cycles
Soldering Parameters
Reflow Condition
T
P
Temperature
- 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
)
260
+0/-5
t
P
Ramp-up
150°C
200°C
T
L
T
S(max)
Preheat
t
L
Ramp-do
Ramp-down
5°C/second max
5°C/second max
217°C
T
S(min)
t
S
25
time to peak temperature
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
5°C/second max
8 minutes Max.
280°C
Sxx12x Series
283
©2013 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 09/23/13
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