Sxx55x Series
K
Teccor® brand Thyristors
55 Amp Standard SCRs
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
t3P)4DPNQMJBOU
t(MBTToQBTTJWBUFE
junctions
t7PMUBHFDBQBCJMJUZVQ
to 1000 V
t4VSHFDBQBCJMJUZVQUP
650 A
Main Features
Symbol Value Unit
I
T(RMS)
V
DRM/VRRM
I
GT
55 A
400 to 1000 V
40 mA
Applications
Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.
Schematic Symbol
A
G
Absolute Maximum Ratings
Symbol Parameter Test Conditions Value Unit
I
T(RMS)
I
T(AV)
I
TSM
I2tI
di/dt Critical rate of rise of on-state current
I
GM
P
G(AV)
T
stg
T
J
RMS on-state current TC = 90°C 55 A
Average on-state current TC = 90°C 35.0 A
Peak non-repetitive surge current
2
t Value for fusing tp = 8.3 ms 1750 A2s
Peak gate current
Average gate power dissipation
single half cycle; f = 50Hz;
T
(initial) = 25°C
J
single half cycle; f = 60Hz;
T
(initial) = 25°C
J
f = 60Hz ; T
T
= 125°C
J
P
= 10µS
W
T
= 125°C
J
= 125°C
J
550
650
175 A/s
4.0 A
0.8 W
Storage temperature range -40 to 150 °C
Operating junction temperature range -40 to 125 °C
A
Sxx55x Series
321
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
Electrical Characteristics (T
= 25°C, unless otherwise specified)
J
Symbol Test Conditions Value Unit
I
GT
V
GT
dv/dt
VD = 12V; RL = 30
V
= V
; gate open; TJ = 100°C
D
DRM
400V
600V 600
800V 500
1000V 250
MAX. 40
MIN. 5
MAX. 1.5 V
650
MIN.
400V 550
VD = V
; gate open; TJ = 125°C
DRM
600V 500
800V 475
V
GD
I
H
t
q
t
gt
Note :
(1) I
=2A; tp=50µs; dv/dt=5V/µs; di/dt=-30A/µs
T
VD = V
IG = 2 x IGT; PW = 15µs; IT = 110A TYP. 2.5 s
; RL = 3.3 k; TJ = 125°C MIN. 0.2 V
DRM
IT = 400mA (initial) MAX. 60 mA
(1) MAX. 35 s
Static Characteristics
mA
V/s
Symbol Test Conditions Value Unit
V
TM
IT = 110A; tp = 380s MAX. 1.8 V
TJ = 25°C
o7
800 V 20
10
1000 V 30
o7 1000
I
DRM
/ I
RRM
V
/ V
DRM
RRM
T
= 100°C
J
800V 1500
MAX.
1000V 5000
o7 2000
= 125°C
T
J
800V 3000
Thermal Resistances
Symbol Parameter Value Unit
R
(J-C)
R
(J-A)
Note: xx = voltage
Sxx55R
Junction to case (AC)
Sxx55N
Sxx55W
Sxx55M
Junction to ambient Sxx55R 40 °C/W
0.5
°C/W
0.53
A
Sxx55x Series
322
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
2.0
1.5
= 25°C)
J
(T
GT
1.0
/ I
GT
0.5
Ratio of I
0.0
-40 -15 10 35 60 85 110
Junction Temperature (TJ) -- (°C)
Figure 3: Normalized DC Holding Current
vs. Junction Temperature
2.0
1.5
= 25°C)
J
(T
H
1.0
/ I
H
Ratio of I
0.5
125
Figure 2: Normalized DC Gate Trigger Voltage
vs. Junction Temperature
2.0
1.5
= 25°C)
J
(T
GT
1.0
/ V
GT
0.5
Ratio of V
0.0
-40 -15 10 35 60 85 110
Junction Temperature (TJ) -- (°C)
Figure 4: On-State Current vs. On-State Voltage
(Typical)
120
TJ = 25°C
100
80
60
) – Amps
T
(i
40
Instantaneous On-state Current
20
125
0.0
-40 -1 5 10 35 60 85 110
Junction Temperature (TJ) -- (°C)
Figure 5: Power Dissipation (Typical)
vs. RMS On-State Current
60
50
40
30
] - (Watts)
D(AV)
20
[P
10
Average On-State Power Dissipation
0
0 5 10 15 20 25 30 35 40 4550 55
RMS On-State Current [I
Note: xx = voltage
Sxx55x Series
T(RMS)
] - (Amps)
125
0
0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6
Instantaneous On-state Voltage (vT) – Volts
Figure 6: Maximum Allowable Case Temperature
vs. RMS On-State Current
323
130
125
120
115
110
105
100
) - °C
C
95
(T
90
85
80
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
75
Maximum Allowable Case Temperature
CONDUCTION ANGLE: 180°
70
0 5 10 15 20 25 30 35 40 4550 55 60
RMS On-State Current [I
The "R" or "M" package rating is intended
for high surge condition use only and not
recommended for >50A rms continuous
current use since narrow pin leads depending on lead length can exceed PCB solder
melting temperature. "W" package is
recommended for >50A rms continuous
current requirements.
] - Amps
T(RMS)
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
Figure 7: Maximum Allowable Case Temperature
vs. Average On-State Current
130
125
120
115
110
105
100
) - °C
C
95
(T
90
85
80
CURRENT WAVEFORM: Sinusoidal
75
Maximum Allowable Case Temperature
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
70
0 5 10 15 20 25 30 35 40
Average On-State Current [I
The "R" or "M" package rating is intended for high
surge condition use only and not recommended
for >32A (AV) continuous current use since narrow
pin leads depending on lead length can exceed
PCB solder melting temperature. "W" package is
recommended for >32A (AV) continuous current
requirements.
] - Amps
T(AVE)
Figure 9: Maximum Allowable Ambient Temperature
vs. Average On-State Current
120
100
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
Figure 8: Maximum Allowable Ambient Temperature
vs. RMS On-State Current
120
100
80
) - °C
A
60
40
Temperature (T
Maximum Allowable Ambient
20
0
0.0 0.5 1.0 1.5 2.0 2.5
RMS On-State Current [I
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
] - Amps
T(RMS)
80
) - °C
60
A
(T
40
20
Maximum Allowable Ambient Temperature
0
0.0 0.5 1.
Average On-State Current [I
01.5
] - Amps
T(AVE)
Figure 10: Peak Capacitor Discharge Current Figure 11: Peak Capacitor Discharge Current Derating
10000
) - Amps
TM
1000
I
TRM
Peak Discharge Current (I
100
0.5 1.0 10.0 50.0
t
W
Pulse Current Duration (tw) - ms
1.2
1.0
0.8
0.6
0.4
Normalized Peak Current
0.2
0.0
0255075 100 12
Case Temperature (TC) - °C
5 150
Note: xx = voltage
Sxx55x Series
324
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
eat
Ramp-do
55 Amp Standard SCRs
Figure 12: Surge Peak On-State Current vs. Number of Cycles
1000
) – Amps
TSM
100
Peak Surge (Non-repetitive)
On-state Current (I
10
1 10 100 1000
Surge Current Duration -- Full Cycles
Soldering Parameters
Reflow Condition 1Co'SFFBTTFNCMZ
- Temperature Min (T
Pre Heat
- Temperature Max (T
- Time (min to max) (ts) oTFDT
Average ramp up rate (Liquidus Temp)
(TL) to peak
T
to TL - Ramp-up Rate 5°C/second max
S(max)
Reflow
- Temperature (TL) (Liquidus) 217°C
- Temperature (tL) oTFDPOET
Peak Temperature (TP) 260
Time within 5°C of actual peak
Temperature (tp)
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (T
Do not exceed 280°C
) 150°C
s(min)
) 200°C
s(max)
5°C/second max
+0/-5
°C
oTFDPOET
) 8 minutes Max.
P
T
P
T
L
T
S(max)
Temperature
T
S(min)
25
SUPPLY FREQUENCY: 60 Hz Sinusoidal
LOAD: Resistive
RMS On-State Current: [I
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.
Ramp-upRamp-up
PreheatPreh
t
S
time to peak temperature
]: Maximum Rated
T(RMS)
t
P
t
L
Ramp-down
Time
Sxx55x Series
325
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
Physical Specifications Environmental Specifications
Terminal Finish 100% Matte Tin-plated
Body Material
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.
Test
AC Blocking
Specifications and Conditions
MIL-STD-750, M-1040, Cond A Applied
Peak AC voltage @ 125°C for 1008 hours
MIL-STD-750, M-1051,
Temperature Cycling
100 cycles; -40°C to +150°C;
15-min dwell-time
Temperature/
Humidity
High Temp Storage
EIA / JEDEC, JESD22-A101
1008 hours; 320V - DC: 85°C;
85% rel humidity
MIL-STD-750, M-1031,
1008 hours; 150°C
Low-Temp Storage 1008 hours; -40°C
MIL-STD-750, M-1056
Thermal Shock
10 cycles; 0°C to 100°C; 5-min dwelltime
at each temperature; 10 sec (max) transfer
time between temperature
EIA / JEDEC, JESD22-A102
Autoclave
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
Dimensions — TO-220AB (R-Package) — Non-Isolated Mounting Tab Common with Center Lead
7. 0 1
.276
2
13.36
.526
Dimension
Inches Millimeters
Min Max Min Max
A 0.380 0.420 9.65 10.67
B 0.105 0.115 2.67 2.92
C 0.230 0.250 5.84 6.35
D 0.590 0.620 14.99 15.75
E 0.142 0.147 3.61 3.73
F 0.110 0.130 2.79 3.30
G 0.540 0.575 13.72 14.61
H 0.025 0.035 0.64 0.89
J 0.195 0.205 4.95 5.21
K 0.095 0.105 2.41 2.67
L 0.060 0.075 1.52 1.91
M 0.085 0.095 2.16 2.41
N 0.018 0.024 0.46 0.61
O 0.178 0.188 4.52 4.78
P 0.045 0.060 1.14 1.52
R 0.038 0.048 0.97 1.22
T
MEASURING POINT
C
E
C
D
G
A
ANODE
B
F
R
L
H
GATECATHODE
ANODE
K
J
O
P
NOTCH IN
GATE LEAD
TO ID.
NON-ISOLATED
TAB
N
M
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
AREA (REF.) 0.17 IN
8.13
.320
Sxx55x Series
326
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
Dimensions – TO-263AB (N-package) — D2-Pak Surface Mount
T
MEASURING POINT
16.89
.665
W
CATHODE
7. 0 1
.276
3.81
.150
ANODE
G
11.68
.460
8.89
.350
6.60
.260
C
B
A
GATE
D
F
7. 0 1
.276
1.40
.055
2.03
.080
C
V
S
K
2.16
.085
E
U
J
H
AREA: 0.11 in
8.13
.320
2
8.41
.331
7. 0 1
.276
Dimension
Inches Millimeters
Min Max Min Max
A 0.360 0.370 9.14 9.40
B 0.380 0.420 9.65 10.67
C 0.178 0.188 4.52 4.78
D 0.025 0.035 0.63 0.89
E 0.048 0.055 1.22 1.40
F 0.060 0.075 1.52 1.91
G 0.095 0.105 2.41 2.67
H 0.083 0.093 2.11 2.36
J 0.018 0.024 0.46 0.61
K 0.090 0.110 2.29 2.79
S 0.590 0.625 14.99 15.87
V 0.035 0.045 0.89 1.14
U 0.002 0.010 0.05 0.25
W 0.040 0.070 1.02 1.78
Dimensions – TO-218X (W Package) — Non-Isolated Mounting Tab Common with Center Lead
Measurement
Point
ANODE
T
c
CATHODE
C
B
U
(diameter)
D
Dimension
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
A
F
Z
E
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
W
N
T
M
Y
K
V
X
J
GATE
R
S
P
ANODE
L
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
G
H
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
Inches Millimeters
Min Max Min Max
Sxx55x Series
327
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
Dimensions – TO-218AC (M Package) — Non-isolated Mounting Tab Common with Center Lead
T
Measurement Point
c
A
F
P
CATHODE
ANODE
R
B
U (diameter)
ANODE
C
D
Dimension
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
E
W
GATE
J
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
M
Q
N
K
L
Note: Maximum torque
to be applied to mounting
tab is 8 in-lbs. (0.904 Nm).
H
G
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
Inches Millimeters
Min Max Min Max
Product Selector
Part Number
400V 600V 800V 1000V
Sxx55R XXXX 40mA Standard SCR TO-220R
Sxx55N XXXX 40mA Standard SCR TO-263
Sxx55W X X X 40mA Standard SCR TO-218X
Sxx55M XXXX 40mA Standard SCR TO-218AC
Note: xx = Voltage
Voltage
Gate Sensitivity Type Package
Packing Options
Part Number Marking Weight Packing Mode Base Quantity
Sxx55R Sxx55R 2.2g Bulk 500
Sxx55RTP Sxx55R 2.2g Tube 500 (50 per tube)
Sxx55NTP Sxx55N 1.6g Tube 500 (50 per tube)
Sxx55NRP Sxx55N 1.6g Embossed Carrier 500
Sxx55WTP Sxx55W 5.23g Tube 250 (25 per tube)
Sxx55MTP Sxx55M 4.40g Tube 250 (25 per tube)
Note: xx = Voltage
Sxx55x Series
328
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
Teccor® brand Thyristors
55 Amp Standard SCRs
TO-263 Embossed Carrier Reel Pack (RP) Specification
Meets all EIA-481-2 Standards
0.63
(16.0)
0.157
(4.0)
0.059
(1.5)
Gate
DIA
Cathode
0.945
(24.0)
0.827
(21.0)
*
* Cover tape
Anode
12.99
0.512 (13.0) Arbor
Hole Dia.
1.01
(25.7)
(330.0)
Direction of Feed
Dimensions
are in inches
(and millimeters).
Part Numbering System Part Marking System
S6055 R
56
TO-218AC - (M Package)
TO-218X - (W Package)
DEVICE TYPE
S: SCR
VOLTAGE RATING
40: 400V
60: 600V
80: 800V
K0: 1000V
CURRENT RATING
55: 55A
Lead Form Dimensions
xx: Lead Form Option
SENSITIVITY & TYPE
[blank]: 40mA
PACKAGE TYPE
R: TO-220 (Non-isolated)
N: TO-263 (D
M: TO-218AC (Non-isolated)
W: TO-218X (Non-isolated)
2
- Pak)
S6055M
YMLXX
®
Date Code Marking
Y:Year Code
M: Month Code
L: Location Code
XX: Lot Serial Code
TO-220 AB - (R Package)
TO-263 AB - (N Package)
S6055R
MY
®
Date Code Marking
Y:Year Code
M: Month Code
XXX: Lot Trace Code
Sxx55x Series
329
Specifications are subject to change without notice.
©2013 Littelfuse, Inc
Revised: 09/23/13
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