Metal Element
Current Sense Resistor
ULR Series
·
Robust metal strip able to withstand high
Metal Strip Current Sense Resistors Surface Mount
·
·
·
RoHS compliant
·
AEC-Q200
Construction
·
Higher wattage devices feature PCB clearance gap to
Black coat
temperature and high current.
Low TCR and Inductance
Resistance
ULR Series
Range from 0.5 mΩ to 22 mΩ
Welwyn Components
maximize thermal performance
A low TCR resistance alloy plate, with tin plated connection bands is protectively coated on the upper and lower
faces and numerically marked with the resistance value. This part is suitable for wave or reflow soldering.
Green coat
A low TCR resistance alloy plate is grooved to set the final resistance, the lower faces are tin plated for
connections, and it is protectively coated on the upper and lower faces and numerically marked with the resistance
Electrical Data
suitable for reflow soldering.
value. This part is ONLY
TCR
Tolerance
Ambient
Uncoated
Size Coating Power Rating Standard Resistance Values
Type
Withstanding
@ 80°C
grooved to set the final resistance
(±ppm/°C)
lower face only is protected with an
(W)
(mΩ)
1
(±%)
Temperature (°C)
A low TCR resistance alloy plate is
and the
Voltage (V)
epoxy coating. The lower faces are tin plated for
0.6, 1, 2, 3, 4, 5, 6, 7, 8,
0.5,
connections. This part is ONLY suitable for reflow soldering.
ULRG1 /
Dielectric
1
1206
9, 10
ULR1S
None
2
N/A
Marking
/ 2010
ULRG15
1.5
0.5, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10
ULR15S
Only 2512 size parts are marked. For values which are integer numbers of milliohms, the marking is 4-character
ULRG1 /
50
“R010” for 10m
12, 13, 14, 15, 22
including fractions of a milliohm the marking is 3 or
IEC62 code; e.g. “R002” for 2m ,
1
11,
. For values
ULR1
4-character code using “M” to indicate the decimal point, e.g. “M75” for 0.75m , “1M50” for 1.5m .
ULRG2 /
2
6.5, 7, 8, 9, 10
ULR2
ULRG25 /
Green
2.5
4, 4.5, 5, 6
ULR25
1, 5
-55 to +170
0.5, 0.75
100
ULRG3 /
3
ULR3
1, 1.5, 2, 2.5, 3
50
2512
200
ULR1
ULRB2 /
ULR1
ULRB2 /
Black
1
0.5, 0.75, 1, 1.5, 2
2.5, 3, 3.5
50
150
4, 4.5, 5, 5.5, 10
Sn Plated Finish
100
Black
Green
6, 6.5, 7
Coat & Uncoated
75
Performance Data
ref.
3
4
6
7
8
14
15
16
18
21
22
2
0.5, 0.75, 1, 1.5, 2
50
Termination Details:
ULR2
Material
higher resistance values
plated
refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Matt tin
please
finish over a barrier layer
Notes: 1.
For
Solderability
95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
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 *
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
5 x Pr for 5s
Max.
(add R0005)
Black &
uncoated
Green
1
1
0.5
1
1
1
1
1
1
1
0.5
0.5
0.5
1
0.5
1
>95% coverage
0.5
0.5
0.25
0.25
0.5
1
Notes: 1. Full AEC-Q200 qualification applies to 2512 size. The 1206 and 2010 sizes have received the tests marked *.
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject
graph
Power de-rating
to TT electronics’ own data and is considered accurate at time of going to print.
P
100%
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
50%
03.14
ULRG3 /
ULR3
ULR1
ULRB2 /
ULR1
Non
e
2
3
1
Metal Element
ULRB2 /
Current Sense Resistor
2
ULR2
Black
0.5, 0.75
1, 1.5, 2, 2.5, 3
0.5, 0.75, 1, 1.5, 2
2.5, 3, 3.5
4, 4.5, 5, 5.5, 10
6, 6.5, 7
0.5, 0.75, 1, 1.5, 2
100
50
50
150
100
75
50
200
ULR Series
resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Notes:
1. For higher
Physical Data
Physical Data
Dimensions (mm) and weight (mg)
Size Coating
Values
0.5, 0.6, 1, 4, 5, 6
1206
2, 3, 10
7, 8, 9
0.5, 1, 4, 5
None
2, 6, 7, 8
2010
3
9, 10
0.5
0.75
1, 5, 6
Green
1.5, 6.5, 7
2 – 3, 8 - 22
4, 4.5
0.5
0.75, 2.5
1
2512
1.5
2, 5, 6
3
Black
3.5
4
4.5
5.5, 6.5
7
ULR Series
10
L (±0.25)
3.20
W
1.6
±0.1
2.54
±0.15
T (±0.2)
D
1.1 ±0.25
0.6 ±0.25
0.9 ±0.25
1.84 ±0.25
1.54 ±0.25
1.04 ±0.25
1.29 ±0.25
2.68 ±0.25
2.48 ±0.25
1.93 ±0.25
1.43 ±0.25
1.18 ±0.25
2.18 ±0.25
Wt (nom)
20
5.08
40
0.6
3.0
±0.2
1.4
1.0
0.8
0.65
0.5
0.7
0.71
0.6
0.58
0.47
0.45
0.8
6.35
3.18
±0.25
60
1.3 ±0.38
Metal Strip Current Sense Resistors Surface Mount
1.9 ±0.15
Welwyn Components
Construction
Construction
Black coat
A low TCR resistance alloy plate, with tin plated connection bands is protectively coated on the upper and lower
faces and numerically marked with the resistance value. This part is suitable for wave or reflow soldering.
Green coat
A low TCR resistance alloy plate is grooved to set the final resistance, the lower faces are tin plated for
connections, and it is protectively coated on the upper and lower faces and numerically marked with the resistance
value. This part is ONLY suitable for reflow soldering.
Uncoated
A low TCR resistance alloy plate is grooved to set the final resistance and the lower face only is protected with an
epoxy coating. The lower faces are tin plated for connections. This part is ONLY suitable for reflow soldering.
Marking
Only 2512 size parts are marked. For values which are integer numbers of milliohms, the marking is 4-character
IEC62 code; e.g. “R002” for 2m , “R010” for 10m . For values including fractions of a milliohm the marking is 3 or
4-character code using “M” to indicate the decimal point, e.g. “M75” for 0.75m , “1M50” for 1.5m .
Black
Green Coat & Uncoated
Sn Plated Finish
Termination Details:
Material
Matt tin plated finish over a barrier layer
Solderability
95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
General Note
AEC-Q200
Table 7
TT electronics reserves the right to make changes in product specification without notice or liability.
ref.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
Test
Method
Max.
Black &
(add R0005)
Green
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
uncoated
3
High Temp. Exposure *
© TT electronics plc
4
6
MIL-STD-202 Method 108
Temperature Cycling JESD22 Method JA-104
Moisture Resistance MIL-STD-202 Method 106
1
0.5
1
1
0.5
1
03.14
Metal Element
Current Sense Resistor
ULR Series
Electrical Connections
Electrical Connections
Electrical
4-wire pad layout
Connections
25
1
2
4-wire pad layout
2-wire pad layout
2-wire pad layout
25
1
2
25
1
2
4-wire measurement points
5.4
4-wire measurement points
5.4
25
1
2
25
1
2
a
25
1
2
1.2
1.2
L
a
a
1.0
1.0
unit: mm
unit mm
4-wi:re pad layout
4-wire pad l
a
yout
a
a
L
L
unit: mm
3.45
3.45
1.5
1.5
unit: mm
0.5
Probe dia.
0.5
Probe dia.
20
1
0
20
1
0
L
20
1
0
20
1
0
1.05
L
L
1
206
1
206
0.7
L
L
0.7
unit: mm
unit: mm
1.05
unit: mm
unit: mm
2-wire pad layout
2-wire pad layout
unit mm
2-wi:re pad layout
2-wire pa
a
layout
d
20
1
0
20
1
0
L
L
uni mm
4-wti:re measurement points
4-wire measurement points
4.32
4.32
2.9
2.9
1
206
1
206
1.2
1.2
unit: mm
unit: mm
4-wire measurement points
4-wire measurement points
2.6
2.6
a
0.8
0.8
unit: mm
unit: mm
4-wire pad layout
4-wire pad layout
a
0.5
Probe dia.
0.5
Probe dia.
1
206
1
206
a
a
0.5
0.5
unit: mm
unit: mm
a
a
L
L
1.9
1.9
1.25
1.25
unit: mm
unit: mm
0.5
Probe dia.
0.5
Probe dia.
Package
Package
2512 - Black
2512 - Black
Resistance
(mΩ)
Resistance
All
(mΩ)
0.5
All
0.75
0.5
1
0.75
1.5
1
2-3
1.5
4, 4.5
2 3
5 --6
4, 4.5
6.5, 7
5 6
8 --22
6.5, 7
8 - 22
a
a
2.7
3.13
2.7
2.93
3.13
2.38
2.93
1.88
2.38
1.63
1.88
2.63
1.63
2.38
2.63
1.88
2.38
1.63
1.88
1.63
L
L
2.9
0.52
2.9
0.94
0.52
2.04
0.94
3.04
2.04
3.54
3.04
1.54
3.54
2.04
1.54
3.04
2.04
3.54
3.04
3.54
Package
Package
Package
2010 - Green
1206
2010 - Green
Resistance
Resistance
(mΩ)
(mΩ)
Resistance
1
0.5, 0.6
(mΩ)
2-3
a
a
a
1.55
1.55
1.05
1.55
1.55
1.05
1.05
1.35
1.55
1.05
1.35
1.35
2.29
2.29
1.05
1.99
1.99
2.29
1.49
1.49
1.99
2.29
1.49
1.74
1.99
2.29
1.74
1.99
1.74
L
L
L
0.55
0.55
1.55
0.55
0.55
1.55
1.55
0.95
0.55
1.55
0.95
0.95
0.95
0.95
1.55
1.55
1.55
0.95
2.55
2.55
1.55
0.95
2.55
2.05
1.55
0.95
2.05
1.55
2.05
2512 - Green
2512 - Green
1206 - Green
1206 - Green
2010
Suggested Alternative 4-Wire Design Methods
1,
6
1
4 -
4 – 6
2
2
-3
7 -
–
9
3, 10
4
10
–
6
7
-
9
7
1
- 9
1, 4 - 5
0.5,
10
2
2, 6 – 8
1
3
3
2
4-5
3
9 10
6 -
-
8
4 5
9 --10
6-8
9 - 10
Note: Nominal values; tolerances not included
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi
Texas
78411 USA
Note: Nominal values; tolerances not included
Telephone:
361 992 7900 • Facsimile: 361 992 3377 •
Website:
www.irctt.com
ULR Issue April 2011 Sheet 3 of 6
ULR Issue April 2011 Sheet 3 of 6
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi
Texas
78411 USA
Telephone:
361 992 7900 • Facsimile: 361 992 3377 •
Website:
www.irctt.com
Vias with copper traces on internal layers.
General Note
Sense traces on Solder pads beneath the chip
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
03.14
A low TCR resistance
Metal Element
alloy plate with plated connection
bands is protectively coated and numerically marked with
Black Type
Current
TCR resistanceas described in Productconnection This
the resistance value, alloy plate with plated Marking.
A low
Sense Resistor
Black Type
Green Type
ULR
wave or IR re½ow soldering processes.
Series
the resistance value, as described in Product Marking.
version has standard coated connection and is suitable for
bands is protectively plated and numerically marked with
This
version has standard plated connection and is suitable for
wave or IR re½ soldering processes.
ow
Power Derating Curve
Power Derating Curve
Rated Power (%) (%)
Rated Power
A low TCR alloy plate is grooved to set the ½ resistance.
nal
The lower
Type
are solder plated for connections, and the top
faces
Green
surface is alloy plate coated and numerically resistance.
A low TCRprotectively is grooved to set the ½ marked with the
nal
resistance faces are solder platedProduct Marking. and the top
The lower value, as described in for connections, This part
is suitable protectively coated and soldering processes.with the
ow
surface is for wave and IR re½ numerically marked
Wave
re½ requires the solder maskin Product Marking. according to
ow
resistance value, as described to be dimensioned This part
page 2 using the W and IR dimensions of the part.
is suitable for wave and D re½ soldering processes.
Wave
ow
re½ requires the solder mask to be dimensioned according to
ow
page 2 using the W and D dimensions of the part.
Power Derating Curve
100
100
50
50
0
0
0
0
80
170
170
Note:
Ambient Temperature (°C)
80
Ambient Temperature
Plastic Tape Speci fication
(°C)
Top Tape
Plastic Tape Speci fication
Top Tape
The power derating curve is a guidance based on a
Note:
conservative design model. The ULR is a solid metal
The construction that can withstand significantly a
alloypower derating curve is a guidance based ongreater
conservative design model. The conservative model
operating temperatures than the ULR is a solid metal
alloy construction that can withstandoperate up togreater
permits. The protective coating will significantly
operating temperatures withstand in excess of 350°C.
260°C and the alloy canthan the conservative model
permits. The system thermal design will be a to
Therefore, theprotective coating will operate up more
260°Ccant design parameter due toin excess limitations of
signifi and the alloy can withstand the heat of 350°C.
Therefore, the system thermal design will be a more
the solder joint.
signifi cant design parameter due to the heat limitations of
the solder joint.
Plastic tape Specification
A
ψ
D
0
ψ
D
0
E
E
F
F
P
1
P
1
E
1.75 ± 0.1
E
1.75 ± 0.1
1.75 ± 0.1
1.75 ± 0.1
1.75 ± 0.1
1.75 ± 0.1
1.75 ± 0.1
F
3.5 ± 0.05
F
5.5 ± 0.05
3.5 ± 0.05
5.5 ± 0.05
5.5 ± 0.05
5.5 ± 0.05
5.5 ± 0.05
A
B
B
Resistor
Emboss Tape
T
Resistor
Emboss Tape
A
B
W
1.90 ± 0.1
A
2.85 ± 0.1
1.90 ± 0.1
3.40 ± 0.1
2.85 ± 0.1
3.40 ± 0.1
3.40 ± 0.1
3.60 ± 0.1
B
5.55 ± 0.1
3.60 ± 0.1
6.75 ± 0.1
5.55 ± 0.1
6.75 ± 0.1
6.75 ± 0.1
8.0 ± 0.2
W
12.0 ± 0.2
8.0 ± 0.2
12.0 ± 0.1
12.0 ± 0.2
12.0 ± 0.1
12.0 ± 0.1
W
W
T
P
2
P
2
P
0
P
0
P
0
ψ
D
1
Direction of unreeling
ψ
D
1
Direction of unreeling
P
1
4.0 ± 0.1
P
1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
P
2
2.0 ± 0.05
P
2
2.0 ± 0.05
2.0 ± 0.05
2.0 ± 0.05
2.0 ± 0.05
2.0 ± 0.05
2.0 ± 0.05
ΦD
0
1.55 ± 0.05
ΦD
0
1.55 ± 0.05
1.55 ± 0.05
1.55 ± 0.05
1.55 ± 0.05
1.55 ± 0.05
1.55 ± 0.05
ΦD
1
1.0min.
ΦD
1
1.4min
1.0min.
1.4min
1.4min
1.4min
1.4min
T
0.87 ± 0.1
T
0.85 ± 0.1
0.87 ± 0.1
1.45 ± 0.2
0.85 ± 0.1
0.81 ± 0.1
1.45 ± 0.2
0.81 ± 0.1
0.81 ± 0.1
0.81 ± 0.1
Quantity
(EA)
2,000
Quantity
(EA)
2,000
2,000
2,000
2,000
2,000
2,000
Type
1206
Type
2010
1206
2512
2010
Black
2512
2512
Black
Green
2512
Green
Resistance
(mΩ)
1 -10
Resistance
(mΩ)
1 -10
1 -10
0.50 - 0.75
1 -10
1 - 10
0.50 - 0.75
0.50 -15
1 - 10
4.0 ± 0.1
P
0
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
4.0 ± 0.1
1. The cumulative tolerance of 10 sprocket hole pitch is ± 0.2 mm.
2. Carrier camber shall not be more than 1 mm per 100 mm through a length of 250 mm.
Note:
3. The cumulative 0.3 mm of 10 sprocket of the packet.
1. A & B measuredtolerancefrom the bottomhole pitch is ± 0.2 mm.
4. Carrier camber shall not the inside bottom of the packet through a length of the mm.
2.
T
measured at a point onbe more than 1 mm per 100 mm to the top surfaceof 250 carrier.
5. Pocket position 0.3 mm from the bottom of the packet.
3. A & B measuredrelative to sprocket hole is measured as the true position of the pocket and not the pocket hole.
4.
T
measured at a point on the inside bottom of the packet to the top surface of the carrier.
5. Pocket position relative to sprocket hole
•
measured as
Street • Corpus Christi
the
78411 USA
Wire and Film Technologies Division
is
4222 South Staples
the true position of
Texas
pocket and not the pocket hole.
Telephone:
361 992 7900 • Facsimile: 361 992 3377 •
Website:
www.irctt.com
Telephone:
361 992 7900 • Facsimile: 361 992 3377 •
Website:
www.irctt.com
Note:
0.50 -15
ULR Issue April 2011 Sheet 4 of 6
ULR Issue April 2011 Sheet 4 of 6
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi
Texas
78411 USA
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
03.14
Metal Element
Current Sense Resistor
ULR Series
Ordering Procedure
Ordering Procedure
This product has two valid part numbers:
European (Welwyn)
Part Number: ULR2-R0015FT2
(2512, 1.5 milliohms ±1%, Pb-free)
U
L
1
1
Type
2
Value
R
2
-
R
0
0
2
3
Tolerance
F = ±1%
J = ±5%
1
5
F
3
4
Packing
T2 = Plastic tape
All sizes 2000/reel
T
4
2
ULR1S 4 - 6 characters
ULR1
R = ohms
ULR15S
ULR2
ULR25
ULR3
USA (IRC)
Part Number: ULRB22512R0015FLFSLT
(2512, 1.5 milliohms ±1%, Pb-free)
U
L
R
1
1
Type
2
Size
3
Value
B
2
2
5
2
4
F = ±1%
J = ±5%
1
2
R
0
0
3
5
LF = Pb-free
1
5
F
4
L
5
6
Packing
SLT = Plastic tape
All sizes 2000/reel
F
S
L
6
T
Tolerance Termination
ULRG1 1206 4 - 6 characters
ULRG15 2010
R = ohms
ULRG2 2512
ULRG25
ULRG3
ULRB2
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.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
03.14
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