High Power
High Power
Resistors
Resistors
Chip
Chip
Power Chip Resistors
Resistors
High
SC3 Series
SC3 Series
3 W atts in a 1 W att size package*
•
SC3 Series
Resistance range from 1R0 to 10K
•
3 W atts
•
in a 1 W att size package*
3 watts in a 1 watt size package
•
range from 1R0 to 10K
•
ResistanceTolerances to ±1%
Resistance range from 1R0 to 10K
•
AEC-Q200
•
Tolerances to ±1% Quali ed
Tolerances to ±1%
*
Quali ed
•
AEC-Q200
Rated Power @ 70˚C
AEC-Q200 Qualified
*
Rated Power @ 70˚C
Welwyn Components
Welwyn Components
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Electrical
ra cteristic
C h a
Data
Power dissipation @70 ˚ C
C h a r a ct e r i s t i c
Resistance Range
Power dissipation @70 ˚ C
LEV
Resistance Range
Ambient temp range
LEV
Resistance tolerance
Ambient temp range
TCR
Resistance tolerance
Va lu e
3 watts
1R0 to 10K
100 V
Va lu e
3 watts
1R0 to 10K
-55 to +150˚C
1, 2, 5%
100 V
Power Derating Curve
Power Derating Curve
100
% Of Power Rating
100
% Of Power Rating
80
60
80
60
40
20
0
25
˚
T
25
˚
70
˚
T emperature in
˚C
70
˚
150
emperature in
˚
C
150
˚
˚
Physical Data
Physical Data
To p
To p
0.51
±
0.13m m
±100ppm/˚C
1, 2, 5%
40
Leach-resistant solder-plated
Termination
TCR
±100ppm/˚C
copper wrap-around
20
Leach-resistant solder-plated
Termination Pad & trace area for maximum
300mm
2
copper wrap-around
0
power rating
Pad & trace area for maximum
300mm
2
power rating
-55 to +150˚C
Bottom
(Board Side)
Bottom
(Board Side)
0.81
±
0.31mm
Plating
wrap-around
2.29
±
0.13m m
2.29
±
0.13m m
0.81
±
0.31mm
0.51
±
0.13m m
Recommended
Solder Pad Layout
Recommended
Solder Pad Layout
7.6m m
7.6m m
2mm
1mm
2mm
1mm
6.35
±
0.13m m
6.35
±
0.13m m
Plating
wrap-around
3.18
±
0.13m m
3.18
±
0.13m m
0.762
±
0.127m m
thickness
0.762
±
0.127m m
thickness
General Note
General Note
Welwyn
Note
General
Components reserves the right to make changes in ·product speciNorthumberland notice 7AA, UK
© W elwyn Components Limited
Bedlington, cation without NE22 or liability.
84
Welwyn Components reserves the right to make changes in product speci cation without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670
notice
Email:
TT Electronics reserves the right to make changes in product specification without
829465
or
·
liability.
info@welwyn-tt.com · Website: www.welwyn-tt.com
All information is
Components Limited
·
data and is considered accurate
NE22 7AA, UK
to print.
subject to TT Electronics’ own
Bedlington, Northumberland
at time of going
© W elwyn
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
BI Technologies IRC
A
Welwyn
Issue A ·
04.10
subsidiary of
03.02
TT electronics plc
www.ttelectronicsresistors.com
Issue A ·
04.10
03.02
A subsidiary of
TT electronics plc
84
© TT Electronics plc
04.16
High Power
High Power
Chip Resistors
Chip Resistors
SC3
Series
SC3
Series
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.
Welwyn Components
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.
Terminations
The wrap-around terminations have an
have an electroplated
copper terminations
electroplated nickel
barrier
barrier and tin-lead solder
ensures
this ensures
nickel
and matte tin finish. This
coating,
excellent ‘leach’ resistance properties
and
solderability.
Performance Data
ref
3
4
6
7
8
14
15
16
18
21
22
AEC-Q200 Table 7
Test
High Temp. Exposure
Temperature Cycling
Moisture Resistance
Biased Humidity
Operational Life (Cyclic Load)
Vibration
Resistance to Soldering Heat
Thermal Shock
Solderability
Board Flex
Terminal Strength
Short Term Overload
Low Temperature Storage
Low Temperature Operation
Shelf Life Test
Leach Resistance
Method
MIL-STD-202 Method 108
JESD22 Method JA-104
MIL-STD-202 Method 106
MIL-STD-202 Method 103
MIL-STD-202 Method 108
MIL-STD-202 Method 204
MIL-STD-202 Method 210
MIL-STD-202 Method 107
J-STD-002
AEC-Q200-005
AEC-Q200-006
6.25 x Pr for 2s
-65°C for 100 hours
-65°C for 1 hour then Pr for 45 minutes
Room temp for 12 months
Solder dip at 250°C
R%
R%
R%
R%
R%
R%
R%
R%
R%
R%
R%
R%
R%
R%
Max.+0.01
0.5
0.25
0.5
0.5
1.0
0.25
0.25
0.5
>95% coverage
0.25
0.25
0.5
0.5
0.5
0.1
90s minimum
0.05
0.05
Typ.
0.2
0.1
0.2
0.1
0.5
0.05
0.05
0.2
Temperature Rise vs Pad Area
1000
Temperature Rise (˚C)
Pulse Power Rating
100
100
Power (watts)
100mm
2
1 watt
10
10
1
300mm
2
Termination Pad Area (each end)
2 watt
3 watt
1000mm
2
0.1
1.0
Time (sec)
10.0
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
www.ttelectronicsresistors.com
© 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
© TT Electronics plc
Issue A ·
04.10
03.02
04.16
High Power
High Power
Chip Resistors
Chip Resistors
SC3
Series
SC3
Series
Welwyn Components
Packaging
LRF3W Resistors
supplied taped and reeled as
as
IEC 286-3. The standard quantity per reel is
is 1800 parts.
SC3 Resistors are
are supplied taped and reeled
per
per IEC 286-3. The standard quantity per reel
1800 parts.
T
2
D
0
P
2
P
0
T
Marking
33
±
1.0
13
±
0.5mm
E
13
±
0.5
F
178
±
2
80
±
2
B
0
2.5
±
0.5
0.8
±
0.15
T
1
K
0
A
0
P
1
D
1
Tape dimensions in mm
Ordering Procedure
LRF3W
SC3
This product has two valid part numbers:
W
±0.3
12
P1
±0.1
8
P0
±0.1
4
P2
±0.05
2
D0
±0.1
1.5
D1
±0.2
1.5
E
±0.1
1.75
F
±0.05
5.5
A0
±0.1
3.61
B0
±0.1
6.96
K0
±0.1
1.17
T
±0.05
0.28
T1
nom
0.06
G
Ordering Procedure
European (Welwyn) Part Number:
Ordering Procedure
SC3-33RFI
(33 ohms ±1%, Pb-free)
This product has two
etc.
part numbers:
Specify type
S
reference
valid
as shown in this example of
SC3 at 33
Ω
1% on a reel of 1800 pieces:
C 3
-
3
3 R F
I
1
3
European (Welwyn) Part Number:
33R
4
F
(33 ohms
I
±1%, Pb-free)
Type
SC3
2
-
SC3-33RFI
Resistance value
C
S1
(IEC62 code)
Type 1
3
- 2 3
Value
3
2
R
F3 I
Tolerance
3
4
F = ±1%
G =
3
±2%
J = ±5%
Tolerance
F = ±1%
G = ±2%
J = ±5%
4
Packing
I = Standard
1800/reel
4
Packing
I = Standard
1800/reel
Tolerance
SC3 E24 = 3/4 characters
E96 = 3/4
2
characters
(IEC62 code)
1
F
G
J
Type
Packing
R
Value
= ohms
K = kilohms
SC3 E24 = 3/4 characters
2%
E96 = 3/4 characters
5%
R = ohms
K = kilohms
1%
USA (IRC) Part Number:
1800/reel Standard
SCW-SC3LF-33R0F
(33 ohms ±1%, Pb-free)
Tape
SC3
I
S
C
W
-
S
C
3
L
F
-
3
3
R
0
F
1
2
3
5
USA (IRC) Part Number: SCW-SC3LF-33R0F
(33 ohms
4
±1%, Pb-free)
S1 C
SCW
1
SCW
W2
SC3
2
SC3
-
C 3
L
F
-4 3
3
2
3
Termination
Value
S
3
R
0
5
F
1
Family Model
4 Tolerance
5
Note: packaging is tape & reel, 1800/reel
Family Model
Omit for SnPb 3 digits + multiplier F = ±1%
LF = Pb-free
G =
5
±2%
R = ohms for
3
4
values <100 ohms
J = ±5%
Termination
Value
Tolerance
Omit for SnPb 3 digits + multiplier
LF = Pb-free
R = ohms for
values <100 ohms
F = ±1%
G = ±2%
J = ±5%
General Note
TT Electronics reserves the right to
is tape & reel, 1800/reel
Note: packaging
make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© 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
BI Technologies IRC Welwyn
www.ttelectronicsresistors.com
© TT Electronics plc
Issue A ·
04.10
03.02
04.16
86
W
T2
±0.15
1.45
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