Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
SJxx25xx Series
RoHS
Description
This SJxx25xx high temperature SCR series is ideal for
uni-directional switch applications such as phase control
in heating, motor speed controls, converters/rectifiers and
inrush current controllers. These SCRs have a low gate
current trigger level of 6mA,10mA or 35mA maximum at
approximately 1.5V
Features & Benefits
• Halogen free and RoHS
compliant
• Surge capability up to
350 A at 60 Hz half cycle
• 150°C maximum junction
temperature
Schematic Symbol
Applications
A
K
G
Typical applications include AC Generator (ACG) rectifiers,
battery voltage regulators, generic converters, inrush
current controller in various AC to DC applications and soft
starter for low power AC motor. Additional applications
include controls for power tools, home/brown good and
white goods appliances.
Isolated packages offered for ease of heat sinking.
Agency Approval
Main Features
Agency
Symbol
Agency File Number
L Packages: E71639
Value
Unit
IT(RMS)
25
A
VDRM / VRRM
400 or 600
V
IGT
6,10, to 35
mA
Absolute Maximum Ratings
Symbol
VDRM/VRSM
Parameter
Test Conditions
Value
Unit
Peak non-repetitive blocking voltage
Pw=100 μs
VDRM/VRRM+100
V
25
A
16
A
SJxx25Lx
RMS on-state current
IT(RMS)
TC = 100°C
SJxx25Rx
TC = 125°C
SJxx25Nx
TC = 100°C
SJxx25Lx
Average on-state current
IT(AV)
SJxx25Rx
TC = 125°C
SJxx25Nx
single half cycle; f = 50Hz;
TJ (initial) = 25°C
300
single half cycle; f = 60Hz;
TJ (initial) = 25°C
350
A
ITSM
Peak non-repetitive surge current
I2t
I2t Value for fusing
tp = 8.3 ms
510
A 2s
Critical rate of rise of on-state current
f = 60Hz ; TJ = 150°C
125
A/μs
Peak gate current
TJ = 150°C
3
A
Average gate power dissipation
TJ = 150°C
di/dt
IGM
PG(AV)
0.6
W
Tstg
Storage temperature range
-40 to 150
°C
TJ
Operating junction temperature range
-40 to 150
°C
Note: xx=voltage/10, x=sensitivity
SJxx25xx Series
Sxx20x & Sxx25x Series
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
25
HighStandard
JunctionSCRs
Temperature SCRs
Electrical Characteristics (TJ = 25°C, unless otherwise specified)
Symbol
Value
Test Conditions
IGT
VD = 12V RL = 60 Ω
VGT
VD = 12V RL = 60 Ω
SJxx25x
SJxx25x2
MAX.
35
6
10
MIN.
8
2
5
MAX.
VD = 67% VDRM; gate open; TJ = 125°C
dv/dt
SJxx25x1
mA
1.5
MIN.
VD = 67% VDRM; gate open; TJ = 150°C
Unit
V
800
70
500
400
-
200
V/μs
VGD
VD = VDRM RL = 3.3 kΩ TJ = 125°C
MIN.
IH
IT = 400mA (initial)
MAX.
tq
IT = 2A; tp = 50µs; dv/dt = 5V/µs; di/dt = 30A/µs
MAX.
40
μs
tgt
IG = 2 x IGT PW = 15µs IT = 50A
TYP.
2
μs
0.2
75
V
15
35
mA
Note: xx=voltage/10, x=package
Static Characteristics
Symbol
Test Conditions
Component IT = 50A; tp = 380 µs
VTM
MAX.
TJ = 25°C
IDRM / IRRM
Unit
1.6
V
10
TJ = 125°C
VDRM = VRRM
Value
1000
MAX.
TJ = 150°C
μA
3000
Thermal Resistances
Symbol
Parameter
Value
Junction to case (AC)
Rθ(JC)
SJxx25Rx
SJxx25Nx
1.0
SJxx25Lx
2.3
Unit
°C/W
Note: xx=voltage/10, x=sensitivity
Figure 1: Normalized DC Gate Trigger Current
vs. Junction Temperature
Figure 2: N
ormalized DC Gate Trigger Voltage
vs. Junction Temperature
1.4
1.6
Ratio of VGT / VGT (TJ = 25ºC)
Ratio of IGT / IGT (TJ = 25°C)
2.0
1.2
0.8
0.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.0
-40
-15
10
35
60
Junction Temperature (TJ) -- (ºC)
SJxx25xx Series
Sxx20x & Sxx25x Series
85
110
135
150
-40
-15
10
35
60
85
110
135
150
Junction Temperature (TJ) -- (°C)
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
Figure 3: Normalized DC Holding Current
vs. Junction Temperature
Figure 4: O
n-State Current vs. On-State
Voltage (Typical)
Intantaneous On-state Current (iT) – Amps
60
Ratio of IH / IH (TJ = 25°C)
2.0
1.6
1.2
0.8
0.4
T J = 25°C
50
40
30
20
10
0
0.0
-40
-15
10
35
60
85
110
135
0.6
150
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
Junction Temperature (TJ) -- (°C)
Figure 5: Power Dissipation (Typical)
vs. RMS On-State Current
Figure 6: M
aximum Allowable Case Temperature
vs. RMS On-State Current
150
SJxx25Rx
SJxx25Nx
140
20
Maximum Allowable Case
Temperature (TC) - °C
Average On-State Power Dissipation
[PD(AV)] - (Watts)
25
15
10
5
130
SJxx25Lx
120
110
100
90
80
0
0
5
10
15
20
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
25
70
RMS On-State Current [IT(RMS)] - (Amps)
0
5
10
15
20
25
30
RMS On-State Current [IT(RMS)] - Amps
Figure 7: Maximum Allowable Case Temperature
vs. Average On-State Current
Figure 8: Peak Capacitor Discharge Current
150
1000
Maximum Allowable Case
Temperature (TC) - °C
130
Peak Discharge Current (ITM) - Amps
SJxx25Rx
SJxx25Nx
140
SJxx25Lx
120
110
100
90
CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive
CONDUCTION ANGLE: 180°
80
100
ITRM
tW
70
10
0
5
10
Average On-State Current [IT(AVE)] - Amps
SJxx25xx Series
Sxx20x & Sxx25x Series
15
18
0.5
1.0
10.0
50.0
Pulse Current Duration (tW) - ms
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
Figure 9: Peak Capacitor Discharge Current Derating
1.2
Normalized Peak Current
1.0
0.8
0.6
0.4
0.2
0.0
0
25
50
75
100
125
150
Case Temperature (TC) - ºC
Figure 10: Surge Peak On-State Current vs. Number of Cycles
Peak Surge (Non-repetitive)On-state
Current (ITSM) – Amps
1000
SUPPLY FREQUENCY: 60 Hz Sinusoidal
LOAD: Resistive
RMS On-State Current: [IT(RMS)]: Maximum Rated
Value at Specified Case Temperature
Notes:
1. G
ate control may be lost during and immediately
following surge current interval.
2. O
verload 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
SJxx25xx Series
Sxx20x & Sxx25x Series
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
Soldering Parameters
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)
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
Physical Specifications
Terminal Finish
Ramp-up
TL
tL
TS(max)
Preheat
TS(min)
100% Matte Tin-plated
25
Ramp-do
Ramp-down
tS
217°C
60 – 150 seconds
- Time (tL)
tP
TP
Temperature
Reflow Condition
time to peak temperature
Time
Environmental Specifications
Test
Body Material
UL Recognized compound meeting
flammability rating V-0.
AC Blocking
Lead Material
Copper Alloy
Temperature Cycling
Temperature/
Humidity
Specifications and Conditions
MIL-STD-750, M-1040, Cond A Applied
Peak AC voltage @ 150°C for 1008 hours
MIL-STD-750, M-1051,
100 cycles; -55°C to +150°C;
15-min dwell-time
EIA / JEDEC, JESD22-A101
1008 hours; 160V - DC: 85°C;
85% rel humidity
MIL-STD-750, M-1031,
1008 hours; 150°C
Design Considerations
High Temp Storage
Careful selection of the correct component 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 component 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.
Low-Temp Storage
1008 hours; -40°C
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
Moisture Sensitivity
Level
Level 1, JEDEC-J-STD-020D
SJxx25xx Series
Sxx20x & Sxx25x Series
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
Dimensions — TO-220AB (R-Package) — Non-Isolated Mounting Tab Common with Center Lead
TC MEASURING POINT
AREA (REF.) 0.17 IN2
O
A
E
Dimension
8.13
.320
P
ANODE
A
B
C
13.36
.526
D
7.01
.276
NOTCH IN
GATE LEAD
TO ID.
NON-ISOLATED
TAB
F
R
G
L
H
CATHODE
ANODE GATE
K
N
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
M
J
Inches
Millimeters
Min
Max
Min
Max
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
Dimensions — TO-220AB (L-Package) — Isolated Mounting Tab
TC MEASURING POINT
O
A
E
P
AREA (REF.) 0.17 IN2
Dimension
8.13
.320
A
B
C
13.36
.526
D
7.01
.276
F
R
G
L
H
CATHODE
ANODE GATE
K
J
SJxx25xx Series
Sxx20x & Sxx25x Series
Note: Maximum torque to
be applied to mounting tab
is 8 in-lbs. (0.904 Nm).
N
M
Inches
Millimeters
Min
Max
Min
Max
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
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
Dimensions –TO- 263AB (N-package) — D2-Pak Surface Mount
TC MEASURING POINT
B
AREA: 0.11 in 2
C
V
Dimension
E
ANODE
A
B
C
D
E
F
G
H
J
K
S
V
U
W
8.41
.331
7.01
.276
A
S
W
U
K
GATE
CATHODE
G
J
8.13
.320
H
D
F
11.68
.460
2.16
.085
7.01
.276
7.01
.276
16.89
.665
8.89
.350
1.40
.055
Inches
Millimeters
Min
Max
Min
Max
0.360
0.380
0.178
0.025
0.045
0.060
0.095
0.092
0.018
0.090
0.590
0.035
0.002
0.040
0.370
0.420
0.188
0.035
0.060
0.075
0.105
0.102
0.024
0.110
0.625
0.045
0.010
0.070
9.14
9.65
4.52
0.64
1.14
1.52
2.41
2.34
0.46
2.29
14.99
0.89
0.05
1.016
9.40
10.67
4.78
0.89
1.52
1.91
2.67
2.59
0.61
2.79
15.88
1.14
0.25
1.78
3.81
.150
2.03
.080
6.60
.260
Product Selector
Part Number
Voltage
400V
Gate Sensitivity
600V
Type
Package
SJxx25L
X
X
35mA
Standard SCR
TO-220L
SJxx25R
X
X
35mA
Standard SCR
TO-220R
SJxx25N
X
X
35mA
Standard SCR
TO-263
SJxx25L1
X
X
6mA
Standard SCR
TO-220L
SJxx25R1
X
X
6mA
Standard SCR
TO-220R
SJxx25N1
X
X
6mA
Standard SCR
TO-263
SJxx25L2
X
X
10mA
Standard SCR
TO-220L
SJxx25R2
X
X
10mA
Standard SCR
TO-220R
SJxx25N2
X
X
10mA
Standard SCR
TO-263
Note: xx = Voltage/10
Packing Options
Part Number
Marking
Weight
Packing Mode
Base Quantity
SJxx25LxTP
SJxx25Lx
2.2g
Tube
500 (50 per tube)
SJxx25RxTP
SJxx25Rx
2.2g
Tube
500 (50 per tube)
SJxx25NxTP
SJxx25Nx
1.6g
Tube
500 (50 per tube)
SJxx25NxRP
SJxx25Nx
1.6g
Embossed Carrier
500
Note: xx=voltage/10, x=sensitivity
SJxx25xx
Sxx20x &Series
Sxx25x Series
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
Thyristors
20 Amps
/ 25 Amp
Standard
25
High
JunctionSCRs
Temperature SCRs
TO-263 Embossed Carrier Reel Pack (RP) Specifications
Meets all EIA-481-2 Standards
0.63
(16.0)
0.157
(4.0)
Gate
0.059
DIA
(1.5)
0.945
(24.0)
0.827
(21.0)
Cathode
*
* Cover tape
Anode
12.99
(330.0)
0.512 (13.0) Arbor
Hole Dia.
Dimensions
are in inches
(and millimeters).
1.01
(25.7)
Direction of Feed
Part Numbering System
Part Marking System
TO-220 AB - (L and R Package)
TO-263 AB - (N Package)
SJ 60 25 R 1 TP
COMPONENT TYPE
SJ: high temperature SCR
VOLTAGE RATING
40: 400V
60: 600V
CURRENT RATING
25: 25A
PACKING TYPE
TP: Tube Pack
RP: Reel Pack
SENSITIVITY & TYPE
[bank]:35mA
1: 6mA
2:10mA
PACKAGE TYPE
L: TO-220 Isolated
R: TO-220 Non-Isolated
N: TO-263 (D2-Pak)
Sxx16R
SJ6025R1
YM
®
Date Code Marking
Y:Year Code
M: Month Code
XXX: Lot Trace Code
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics.
SJxx25xx Series
Sxx20x & Sxx25x Series
©2018 Littelfuse, Inc
Specifications are subject to change without notice.
Revised: 07/25/18
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