295
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
Sxx55x Series
Main Features
Symbol Value Unit
IT(RMS) 55 A
VDRM /VRRM 400 to 1000 V
IGT 40 mA
Absolute Maximum Ratings
Symbol Parameter Test Conditions Value Unit
IT(RMS) RMS on-state current TC = 90°C 55 A
IT(AV) Average on-state current TC = 90°C 35.0 A
ITSM Peak non-repetitive surge current
single half cycle; f = 50Hz;
TJ (initial) = 25°C 550
A
single half cycle; f = 60Hz;
TJ (initial) = 25°C 650
I2t I2t Value for fusing tp = 8.3 ms 1750 A2s
di/dt Critical rate of rise of on-state current f = 60Hz ; TJ = 125°C 175 A/μs
IGM Peak gate current TJ = 125°C
PW = 10µS 4.0 A
PG(AV) Average gate power dissipation TJ = 125°C 0.8 W
Tstg Storage temperature range -40 to 150 °C
TJOperating junction temperature range -40 to 125 °C
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
650 A
Schematic Symbol
Applications
Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.
AK
G
296
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
Electrical Characteristics (TJ = 25°C, unless otherwise specified)
Symbol Test Conditions Value Unit
IGT VD = 12V; RL = 30 Ω
MAX. 40
mA
MIN. 5
VGT MAX. 1. 5 V
dv/dt
VD = VDRM; gate open; TJ = 100°C
400V
MIN.
650
V/μs
600V 600
800V 500
1000V 250
VD = VDRM; gate open; TJ = 125°C
400V 550
600V 500
800V 475
VGD VD = VDRM; RL = 3.3 kΩ; TJ = 125°C MIN. 0.2 V
IHIT = 400mA (initial) MAX. 60 mA
tq(1) MAX. 35 μs
tgt IG = 2 x IGT; PW = 15µs; IT = 110A TYP. 2.5 μs
Note :
(1) IT=2A; tp=50µs; dv/dt=5V/µs; di/dt=-30A/µs
Thermal Resistances
Symbol Parameter Value Unit
Rθ(J-C) Junction to case (AC)
Sxx55R
Sxx55N 0.5
°C/W
Sxx55W
Sxx55M 0.53
Rθ(J-A) Junction to ambient Sxx55R 40 °C/W
Note: xx = voltage
Static Characteristics
Symbol Test Conditions Value Unit
VTM IT = 110A; tp = 380μs MAX. 1. 8 V
IDRM / IRRM VDRM / VRRM
TJ = 25°C
400 – 600V
MAX.
10
μA
800 V 20
1000 V 30
TJ = 100°C
400 – 600V 1000
800V 1500
1000V 5000
TJ = 125°C
400 – 600V 2000
800V 3000
297
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
Figure 2: Normalized DC Gate Trigger Voltage
vs. Junction Temperature
125
0.0
0.5
1.0
1.5
2.0
-40-15 10 35 60 85 110
Junction Te mperature (TJ) -- (°C)
Ratio of IGT/ IGT (TJ = 25°C)
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)
125
0.0
0.5
1.0
1.5
2.0
-40 -1510356085110
Junction Te mperature (TJ) -- (°C)
Ratio of VGT/ VGT (TJ = 25°C)
125
0.0
0.5
1.0
1.5
2.0
-40-15 10 35 60 85 110
Ratio of IH/ IH (TJ= 25°C)
Junction Te mperature (TJ) -- (°C)
TJ = 25°C
0
20
40
60
80
100
120
0.7 0.8 0.9 1.01.1 1.21.3 1.41.5 1.6
Instantaneous On-state Voltage (vT) – Volts
Instantaneous On-state Current
(iT) – Amps
0
10
20
30
40
50
60
0510 15 20 25 30 35 40 45 50 55
RMS On-State Current [IT(RMS)] - (Amps)
Average On-State Power Dissipation
[PD(AV)] - (Watts)
70
75
80
85
90
95
100
105
110
115
120
125
130
0510 15 20 25 30 35 40 45 50 55 60
Maximum Allowable Case Temperature
(TC) - °C
RMS On-State Current [IT(RMS)] - Amps
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
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 depend-
ing on lead length can exceed PCB solder
melting temperature. "W" package is
recommended for >50A rms continuous
current requirements.
Note: xx = voltage
298
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
Figure 7: Maximum Allowable Case Temperature
vs. Average On-State Current
Figure 8: Maximum Allowable Ambient Temperature
vs. RMS On-State Current
Figure 9: Maximum Allowable Ambient Temperature
vs. Average On-State Current
70
75
80
85
90
95
100
105
110
11 5
120
125
130
0510 15 20 25 30 35 40
Average On-State Current [IT(AVE)] - Amps
Maximum Allowable Case Temperature
(TC) - °C
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
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.
0
20
40
60
80
100
120
0.0 0.5 1.01.5 2.0 2.5
RMS On-State Current [IT(RMS)] - Amps
Maximum Allowable Ambient
Temperature (TA) - °C
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
0
20
40
60
80
100
120
0.0 0.5 1.
01
.5
Average On-State Current [IT(AVE)] - Amps
Maximum Allowable Ambient Temperature
(T
A
) - °C
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
FREE AIR RATING
Figure 10: Peak Capacitor Discharge Current Figure 11: Peak Capacitor Discharge Current Derating
100
1000
10000
0.51.0 10.0 50.0
Peak Discharge Current (ITM) - Amps
Pulse Current Duration (tw) - ms
ITRM
tW
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0255075100 12
51
50
Normalized Peak Current
Case Te mperature (TC) - °C
Note: xx = voltage
299
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
10
100
1000
110100 1000
Surge Current Duration -- Full Cycles
Peak Surge (Non-repetitive)
On-state Current (ITSM) – Amps
Figure 12: Surge Peak On-State Current vs. Number of Cycles
SUPPLY FREQUENCY: 60 Hz Sinusoidal
LOAD: Resistive
RMS On-State Current: [IT(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.
Soldering Parameters
Reflow Condition Pb – Free assembly
Pre Heat
- Temperature Min (Ts(min))150°C
- Temperature Max (Ts(max))200°C
- Time (min to max) (ts)60 – 180 secs
Average ramp up rate (Liquidus Temp)
(TL) to peak 5°C/second max
TS(max) to TL - Ramp-up Rate 5°C/second max
Reflow - Temperature (TL) (Liquidus) 217°C
- Temperature (tL)60 – 150 seconds
Peak Temperature (TP)260+0/-5 °C
Time within 5°C of actual peak
Temperature (tp)20 – 40 seconds
Ramp-down Rate 5°C/second max
Time 25°C to peak Temperature (TP)8 minutes Max.
Do not exceed 280°C
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
Preheat
P
r
e
h
eat
Ramp-upRamp-up
Ramp-down
R
am
p
-
do
300
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
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 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.
Dimensions — TO-220AB (R-Package) — Non-Isolated Mounting Tab Common with Center Lead
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
K
J
A
H
G
B
F
E
C
D
L
R
T
C
MEASURING POINT
ANODE
O
P
N
M
.276
7. 01
.526
13.36
.320
8.13
AREA (REF.) 0.17 IN
2
NOTCH IN
GATE LEAD
TO ID.
NON-ISOLATED
TAB
GATECATHODE ANODE
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
301
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
Dimensions – TO-263AB (N-package) — D2-Pak Surface Mount
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
G
B
A
W
D
F
V
S
CATHODE
ANODE
T
C
MEASURING POINT
C
E
K
H
J
U
.320
8.13
.276
7. 01
.331
8.41
GATE
.460
11.68
.665
16.89
.260
6.60
.150
3.81
.080
2.03
.085
2.16
.055
1.40
.350
8.89
.276
7. 01
.276
7. 01
AREA: 0.11 in 2
Dimensions – TO-218X (W Package) — Non-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
G
R
YH
D
C
K
B
A
EF
N
T
MP
J
L
S
V
U (diameter)
WX
CATHODE
ANODE
ANODE
Tc
Measurement
Point
GATE
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
Z
302
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
Dimensions – TO-218AC (M Package) — Non-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 0.211 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)
ANODE
P
GATE
J
ANODE
CATHODE
M
N
K
L
RQ
Note: Maximum torque
to be applied to mounting
tab is 8 in-lbs. (0.904 Nm).
W
Product Selector
Part Number Voltage Gate Sensitivity Type Package
400V 600V 800V 1000V
Sxx55R X X X X 40mA Standard SCR TO-220R
Sxx55N X X X X 40mA Standard SCR TO-263
Sxx55W X X X 40mA Standard SCR TO-218X
Sxx55M X X X X 40mA Standard SCR TO-218AC
Note: xx = Voltage
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
303
Revised: June 24, 2011 04:57 PM
©2011 Littelfuse, Inc
Teccor® brand Thyristors
Specifications are subject to change without notice.
Please refer to http://www.littelfuse.com for current information.
55 Amp Standard SCRs
Sxx55x Series
TO-263 Embossed Carrier Reel Pack (RP) Specification
Gate
Cathode
Anode
0.512 (13.0) Arbor
Hole Dia.
0.945
(24.0)
0.63
(16.0)
1.01
(25.7)
12.99
(330.0)
0.827
(21.0)
0.157
(4.0)
Direction of Feed
Dimensions
are in inches
(and millimeters).
*
*Cover tape
0.059 DIA
(1.5)
Meets all EIA-481-2 Standards
Part Numbering System Part Marking System
56
DEVICE TYPE
S: SCR
xx: Lead Form Option
PACKAGE TYPE
R: TO-220 (Non-isolated)
M: TO-218AC (Non-isolated)
W: TO-218X (Non-isolated)
N: TO-263 (D
CURRENT RATING
Lead Form Dimensions
55: 55A
VOLTAGE RATING
40: 400V
60: 600V
80: 800V
K0: 1000V
SENSITIVITY & TYPE
S6055R
[blank]: 40mA
2- Pak)
TO-218AC - (M Package)
TO-218X - (W Package)
®
YMLXX
S6055M
®
MY
S6055R
