Teccor
®
brand Thyristors
4 Amp Sensitive SCRs
Sxx04xSx Series
Description
Excellent unidirectional switches for phase control
applications such as heating and motor speed controls.
Sensitive gate SCRs are easily triggered with microAmps
of current as furnished by sense coils, proximity switches,
and microprocessors.
Features & Benefits
to 600 V
junctions
30 A
Main Features
Symbol
I
T(RMS)
V
DRM
/V
RRM
I
GT
Value
4
400 to 600
50 to 500
Unit
A
V
μA
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
T
C
= 75°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
= 110°C
T
J
= 110°C
T
J
= 110°C
Value
4
16
A
20
1.6
50
1
0.1
-40 to 150
-40 to 110
A
2
s
A/μs
A
W
°C
°C
Unit
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
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
209
Revised: July 9, 2008
Sxx04xSx Series
4.0A SCRs
Teccor
®
brand Thyristors
4 Amp Sensitive SCRs
Absolute Maximum Ratings
Symbol
I
T(RMS)
I
TSM
I
2
t
di/dt
I
GM
P
G(AV)
T
stg
T
J
Parameter
RMS on-state current
Test Conditions
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
= 110°C
T
J
= 110°C
T
J
= 110°C
Value
4
25
A
30
3.7
50
1
0.1
-40 to 150
-40 to 110
A
2
s
A/μs
A
W
°C
°C
Unit
A
Peak non-repetitive surge current
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
Electrical Characteristics —
(T
J
= 25°C, unless otherwise specified)
Symbol
I
GT
V
GT
dv/dt
V
GD
V
GRM
I
H
t
q
t
gt
Test Conditions
V
D
= 6V; R
L
= 100
; R
GK
= 1kohm
MAX.
MAX.
TYP
.
MIN.
MIN.
MAX.
MAX.
TYP
.
3
4
50
4
Value
Sxx04xS1
50
0.8
8
0.2
6
6
Sxx04xS2
200
Unit
μA
V
V/μs
V
V
mA
μs
μs
V
D
= V
DRM
; R
GK
= 1kΩ
V
D
= V
DRM
; R
L
= 3.3 k ; T
J
= 110°C
I
GR
= 10μA
I
T
= 20mA (initial); R
GK
= 1kohm
(1)
I
G
= 2 x I
GT
; PW = 15μs; I
T
= 8A
Notes :
xx = voltage, x = package
(1) I
T
=2A; t
p
=50μs; dv/dt=5V/μs; di/dt=-10A/μs
Static Characteristics
Symbol
V
TM
I
DRM
/ I
RRM
Test Conditions
Sxx04xSy I
T
= 8A; t
p
= 380 μs
V
DRM
/ V
RRM
- R
GK
= 1kohm
T
J
= 25°C
T
J
= 110°C
MAX.
MAX.
Value
1.6
2
100
Unit
V
μA
Note : xx or z = voltage, x = package, y = sensitivity
Thermal Resistances
Symbol
R
R
Junction to case (AC)
Junction to ambient
Parameter
Sxx04VSy
Sxx04DSy
Sxx04VSy
Value
3.8
3.0
85
Unit
°C/W
°C/W
(J-C)
(J-A)
Notes: xx = voltage, y = sensitivity
Sxx04xSx Series
210
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
4 Amp Sensitive SCRs
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
4.0
Figure 2: Normalized DC Gate Trigger Voltage
vs. Junction Temperature
2.0
Ratio of I
GT
/ I
GT
(T
J
= 25°C)
3.0
Ratio of V
GT
/ V
GT
(T
J
= 25°C)
1.5
2.0
1.0
1.0
0.5
0.0
-40
-15
10
35
60
85
110
0.0
-40
-15
10
35
60
85
110
Junction Temperature (T
J
) -- (°C)
Junction Temperature (T
J
) -- (°C)
Figure 3: Normalized DC Holding Current
vs. Junction Temperature
3.0
Figure 4: Normalized DC Latching Current
vs. Junction Temperature
3.0
Ratio of I
H
/ I
H
(T
J
= 25°C)
2.0
Ratio of I
L
/ I
L
(T
J
= 25°C)
2.0
1.5
1.5
1.0
1.0
0.5
0.5
0.0
-40
-15
10
35
60
85
110
0.0
-40
-15
10
35
60
85
110
Junction Temperature (T
J
) -- (°C)
Junction Temperature (T
J
) -- (°C)
Figure 5: On-State Current vs. On-State
Voltage (Typical)
25
Figure 6: Power Dissipation (Typical)
vs. RMS On-State Current
5.5
Instantaneous On-state Current (i
T
) – Amps
T
J
= 25°C
20
Average On-State Power Dissipation [P
D(AV)
] - (Watts)
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
Sxx04VSy
Sxx04DSy
15
Sxx04VSy
Sxx04DSy
10
5
0
0.7
0.8
0.9
1.0
1.1
1.2
1.3
1.4
1.5
1.6
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Instantaneous On-state Voltage (v) – Volts
Note: xx or z = voltage, y = sensitivity
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
211
Revised: July 9, 2008
RMS On-State Current [I
T(RMS)
] - (Amps)
Sxx04xSx Series
4.0A SCRs
2.5
2.5
Teccor
®
brand Thyristors
4 Amp Sensitive SCRs
Figure 7: Maximum Allowable Case Temperature
vs. RMS On-State Current
115
110
Figure 8: Maximum Allowable Case Temperature
vs. Average On-State Current
115
110
Maximum Allowable Case
Temperature (T
C
) - °C
Maximum Allowable Case
Temperature (T
C
) - °C
105
100
95
90
85
80
75
70
0.0
0.5
1.0
1.5
2.0
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
Sxx04VSy
Sxx04DSy
105
100
95
90
85
80
75
70
0.0
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
0.5
1.0
1.5
Sxx04VSy
Sxx04DSy
2.5
3.0
3.5
4.0
4.5
2.0
2.5
3.0
RMS On-State Current [I
T(RMS)
] - Amps
Average On-State Current [I
T(AVE)
] - Amps
Figure 9: Maximum Allowable Ambient Temperature
vs. RMS On-State Current
120
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
Figure 10: 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
80
60
Sxx04VSy
40
60
Sxx04VSy
40
20
20
0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0
0.0
0.1
0.2
0.3
0.4
RMS On-State Current [I
T(RMS)
] - Amps
Average On-State Current [I
T(AVE)
] - Amps
Figure 11: Peak Repetitive Capacitor Discharge Current
180
Figure 12: Peak Repetitive Sinusoidal Pulse Current
180
Peak Discharge Current (I
TM
) -Amps
Peak Discharge Current (I
TM
) - Amps
160
140
120
12 Hz
100
80
60
40
20
t
W
I
TRM
160
140
120
1 Hz
100
80
60
40
20
0
I
TM
1 Hz
60 Hz
12 Hz
60 Hz
t
W
0
1
10
100
1
10
100
Pulse Current Duration (t
W
) - μs
Pulse Current Duration (t
W
) - μs
Note: xx = voltage, y = sensitivity
Sxx04xSx Series
212
Revised: July 9, 2008
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
Teccor
®
brand Thyristors
4 Amp Sensitive SCRs
Figure 13: Surge Peak On-State Current vs. Number of Cycles
100.0
Peak Surge (Non-repetitive)
On-state Current (I
TSM
) – Amps
Sxx04VSy
Sxx04DSy
10.0
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.
1.0
0.1
1
10
100
1000
Surge Current Duration -- Full Cycles
Note: xx or z - voltage, y = sensitivity
Figure 14: Simple Test Circuit for Gate Trigger Voltage and Current
Reset
Normally-closed
Pushbutton
100
+
6V
DC
D.U.T.
V1
–
I
GT
1k
(1%)
IN4001
I
G
V
GT
100
R1
To measure gate trigger voltage and current, raise gate
voltage (V
GT
) until meter reading V1 drops from 6 V to 1 V.
Gate trigger voltage is the reading on V
GT
just prior to V1
dropping. Gate trigger current I
GT
Can be computed from
the relationship
V
GT
I
GT
= I
G
- ____ Amps
1000
where I
G
is reading (in amperes) on meter just prior to V1
dropping
Note: I
GT
may turn out to be a negative quantity (trigger
current flows out from gate lead). If negative current
occurs, I
GT
value is not a valid reading. Remove 1 k resistor
and use I
G
as the more correct I
GT
value. This will occur on
12 μA gate products.
©2008 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
213
Revised: July 9, 2008
Sxx04xSx Series
4.0A SCRs
Note: V1 — 0 V to 10 V dc meter
V
GT
— 0 V to 1 V dc meter
I
G
— 0 mA to 1 mA dc milliammeter
R1 — 1 k potentiometer
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