High Power Chip Resistors
SC3 Series
3wasina1wasizepackage
Resistancerangefrom1R0to10K
Tolerancesto±1%
AEC-Q200Qualied
eulaVcitsiretcarahC
Power dissipation @70 ˚ C 3 watts
1R0 to 10K
egnaR ecnatsiseR
V100VEL
Ambient temp range -55 to +150˚C
%5 ,2 ,1ecnarelot ecnatsiseR
TCR ±100ppm/˚C
Termination Leach-resistant solder-plated
copper wrap-around
Pad & trace area for maximum
power rating 300mm 2
High Power
Chip Resistors
SC3 Series
•3 W atts in a 1 W att size package*
•Resistance range from 1R0 to 10K
•
•
Tolerances
AEC-Q200 Qualied
to ±1%
*Rated Power @ 70˚C
General Note
Welwyn Components reserves the right to make changes in product specication without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© W elwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Electrical Data Power Derating Curve
Issue A · 03.02
A subsidiary of
TT electronics plc
Welwyn Components
84
0.51 ± 0.13m m
6.35 ± 0.13m m
3.18 ± 0.13m m
0.762
± 0.127m m
thickness
Plating
wrap-around
0.81 ± 0.31mm
2.29
± 0.13m m
7.6m m
2mm
1mm
Physical Data
100
80
60
40
20
0 25 ˚ 70 ˚ 150 ˚
T emperature in ˚C
% Of Power Rating
To p Bottom
(Board Side)
Recommended
Solder Pad Layout
04.10
eulaVcitsiretcarahC
Power dissipation @70 ˚ C 3 watts
1R0 to 10K
egnaR ecnatsiseR
V100VEL
Ambient temp range -55 to +150˚C
%5 ,2 ,1ecnarelot ecnatsiseR
TCR ±100ppm/˚C
Termination Leach-resistant solder-plated
copper wrap-around
Pad & trace area for maximum
power rating 300mm 2
High Power
Chip Resistors
SC3 Series
•3 W atts in a 1 W att size package*
•Resistance range from 1R0 to 10K
•
•
Tolerances
AEC-Q200 Qualied
to ±1%
*Rated Power @ 70˚C
General Note
Welwyn Components reserves the right to make changes in product specication without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
© W elwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Electrical Data Power Derating Curve
Issue A · 03.02
A subsidiary of
TT electronics plc
Welwyn Components
84
0.51 ± 0.13m m
6.35 ± 0.13m m
3.18 ± 0.13m m
0.762
± 0.127m m
thickness
Plating
wrap-around
0.81 ± 0.31mm
2.29
± 0.13m m
7.6m m
2mm
1mm
Physical Data
100
80
60
40
20
0 25 ˚ 70 ˚ 150 ˚
T emperature in ˚C
% Of Power Rating
To p Bottom
(Board Side)
Recommended
Solder Pad Layout
04.10
Resistors
AllPb-freepartscomplywithEUDirecve2011/65/EU(RoHS2)
04.16
General Note
TT Electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronicsresistors.com
BI Technologies IRC Welwyn
High Power
Chip Resistors
SC3 Series
High Power
Chip Resistors
SC3 Series
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue A · 03.02
Welwyn Components
Performance Data
Temperature Rise vs Pad Area
Construction
Resistive thick film material, overglaze and organic protection
are screen printed on a 96% alumina substrate. The
components are laser trimmed to achieve the required
resistance tolerance.
Terminations
The wrap-around copper terminations have an electroplated
nickel barrier and tin-lead solder coating, this ensures
excellent ‘leach’ resistance properties and solderability.
Chips can withstand immersion in solder at 250˚C for 90
seconds and are suitable for reflow or wave soldering
mounting applications.
Marking
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Chips are packed and mounted with marking side up.
The SC3 Chips are mounted with the actual resistor element
mounted face down on its termination pads.
1000
100
10
100mm2300mm21000mm2
Termination Pad Area (each end)
Temperature Rise (˚C)
1 watt 2 watt 3 watt
Pulse Power Rating
100
10
1
0.010.11.0
Time (sec)
Power (watts)
The wrap-around terminations have an electroplated nickel
barrier and matte tin finish. This ensures
excellent ‘leach’ resistance properties and solderability.
04.10
AEC-Q200 Table 7 Method Max.+0.01Ω Typ.
ref Test
3High Temp. Exposure MIL-STD-202 Method 108 R% 0.5 0.2
4Temperature Cycling JESD22 Method JA-104 R% 0.25 0.1
6Moisture Resistance MIL-STD-202 Method 106 R% 0.5 0.2
7Biased Humidity MIL-STD-202 Method 103 R% 0.5 0.1
8 Operational Life (Cyclic Load) MIL-STD-202 Method 108 R% 1.0 0.5
14 Vibration MIL-STD-202 Method 204 R% 0.25 0.05
15 Resistance to Soldering Heat MIL-STD-202 Method 210 R% 0.25 0.05
16 Thermal Shock MIL-STD-202 Method 107 R% 0.5 0.2
18 Solderability J-STD-002 >95% coverage
21 Board Flex AEC-Q200-005 R% 0.25 0.05
22 Terminal Strength AEC-Q200-006 R% 0.25 0.05
Short Term Overload 6.25 x Pr for 2s R% 0.5
Low Temperature Storage
Low Temperature Operation
-65°C for 100 hours R%
R%
R%
0.5
Shelf Life Test Room temp for 12 months
-65°C for 1 hour then Pr for 45 minutes 0.5
0.1
Leach Resistance Solder dip at 250°C 90s minimum
04.16
General Note
TT Electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronicsresistors.com
BI Technologies IRC Welwyn
High Power
Chip Resistors
SC3 Series
Type SC3 - 33R F I
Resistance value
(IEC62 code)
Tolerance
(IEC62
Packing
code)
High Power
Chip Resistors
SC3 Series
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com Issue A · 03.02
Welwyn Components
86
Packaging
LRF3W Resistors are supplied taped and reeled as per IEC 286-3. The standard quantity per reel is 1800 parts.
Tape dimensions in mm
W P1 P0 P2 D0 D1 E F A0 B0 K0 T T1 T2
±0.3 ±0.1 ±0.1 ±0.05 ±0.1 ±0.2 ±0.1 ±0.05 ±0.1 ±0.1 ±0.1 ±0.05 nom ±0.15
LRF3W 12 8 4 2 1.5 1.5 1.75 5.5 3.61 6.96 1.17 0.28 0.06 1.45
F 1%
G 2%
J 5%
Ordering Procedure
Specify type reference etc. as shown in this example of
2.5 ± 0.5
13 ± 0.5
33 ± 1.0
Marking
0.8 ± 0.15
80 ± 2
178 ± 2
13 ± 0.5mm
P1
A0
B0
D1
D0
P0
P2
G F
W
E
T2
T1
K0
T
SC3 Resistors are supplied taped and reeled as per IEC 286-3. The standard quantity per reel is 1800 parts.
SC3
SC3 at 33 1% on a reel of 1800 pieces:
04.10
Ω
ITape SC3 1800/reel Standard
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: SC3-33RFI (33 ohms ±1%, Pb-free)
S
C
3
-
3
3
R
F
I
1
2
3
4
USA (IRC) Part Number: SCW-SC3LF-33R0F (33 ohms ±1%, Pb-free)
S
C
W
-
S
C
3
L
F
-
3
3
R
0
F
1
2
3
4
5
1
2
3
4
Type ValueTolerance Packing
SC3
E24 = 3/4 characters
F = ±1%
I = Standard
E96 = 3/4 characters
G = ±2%
1800/reel
R = ohms
J = ±5%
K = kilohms
1
2
3
4
5
Family Model Termination ValueTolerance
SCW
SC3
Omit for SnPb
3 digits + multiplier
F = ±1%
LF = Pb-free
R = ohms for
values <100 ohms
G = ±2%
J = ±5%
Note: packaging is tape & reel, 1800/reel
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: SC3-33RFI (33 ohms ±1%, Pb-free)
S
C
3
-
3
3
R
F
I
1
2
3
4
USA (IRC) Part Number: SCW-SC3LF-33R0F (33 ohms ±1%, Pb-free)
S
C
W
-
S
C
3
L
F
-
3
3
R
0
F
1
2
3
4
5
1
2
3
4
Type ValueTolerance Packing
SC3
E24 = 3/4 characters
F = ±1%
I = Standard
E96 = 3/4 characters
G = ±2%
1800/reel
R = ohms
J = ±5%
K = kilohms
1
2
3
4
5
Family Model Termination ValueTolerance
SCW
SC3
Omit for SnPb
3 digits + multiplier
F = ±1%
LF = Pb-free
R = ohms for
values <100 ohms
G = ±2%
J = ±5%
Note: packaging is tape & reel, 1800/reel
04.16
General Note
TT Electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronicsresistors.com
BI Technologies IRC Welwyn
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
TT Electronics:
SCW-SC3-10R0-FT SCW-SC3-12R0-FT SCW-SC3-1500-JT SCW-SC3-24R0-JT SCW-SC3-2R70-FT SCW-SC3-
1000-FT SCW-SC3LF-10R0-FT SCW-SC3LF-2R70F SCW-SC3-2R20-FT SCW-SC3-232R-F SCW-SC3LF-1R50-F
SCW-SC3LF-1K50-F
