Metal Element
Current Sense Resistor
ULR Series
Robust metal strip able to withstand high
temperature and high current.
Low TCR and Inductance
ResistanceRangefrom0.15mΩto10mΩ
RoHS compliant
AEC-Q200
HigherwaagedevicesfeaturePCBclearancegapto
maximize thermal performance
ULR1S ULR1 ULR15S ULR2 ULR25 ULR3
Footprint size 1206 2512 2010 2512 2512 2512
Power rating at 80°C watts 1.0 1.0 1.5 2.0 2.5 3.0
Resistance range 1 ohms R0006 to R01 R0005
to R015 R001 to R01 R0005
to R01
R004
to R006
R0005
to R003
Isolation voltage volts N/A 200V N/A 200V 200V 200V
TCR ppm/°C 50
50, 75,100,
150
See table
below
50 50 50
50, 100
See table
below
Resistance tolerance % 1(F), 5(J)
Protective coating 2None Black/Green None Black/Green Green Green
Standard values See table below for available values
Ambient temperature range °C -55 to +170
Value ULR1S ULR1 ULR15S ULR2 ULR25 ULR3
Coat TCR Coat TCR Coat TCR Coat TCR Coat TCR Coat TCR
R0005
R0006
Black 50 Black 50 Green 100
R00075 Black 50 Black 50 Green 100
R001 None 50 Black 50 None 50 Black 50 Green 50
R0015 Black 50 Black 50 Green 50
R002 None 50 Black 50 None 50 Black 50 Green 50
R0025 Black 150
R003 None 50 Black 150 None 50 Green 50
R004 None 50 Black 100 None 50 Green 50
R0045 Green 50
R005 None 50 Black 100
Black 100
None 50 Green 50
R0065 Black 75 Green 50
R006 None 50 Black 75 None 50 Green 50
R007 None 50 Black 75 None 50 Green 50
R008 None 50 None 50 Green 50
R009 None 50 None 50 Green 50
R01 None 50 None 50 Green 50
R011 Green 50
R012
R013
R014
Green 50
Green 50
Green 50
R015 Green 50
Welwyn Components
Metal Strip Current Sense
Resistors Surface Mount
ULR Series
· Resistance R0005 (0.5m ) to R015 (15m )
· Low TCR, Low inductance
· Designed for current sensing in power electronic systems
· Solid metal element withstands high current surges
· RoHS compliant
· AEC-Q200 Qualified
Electrical Data
Note 1: For values above 0R015 refer to our LR / LRF Series
Note 2: Colour of coating relates to solder process suitability, see Construction
Standard values available (non-standard values may be available to order - consult factory
None 50
Resistors
11.18
General Note
TT Electronics reserves the right to make changes in product specication 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.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
Robust metal strip able to withstand high
temperature and high current.
Low TCR and Inductance
Resistance Range from 0.15 mΩ to 22 mΩ
RoHS compliant
AEC-Q200
Higher devices feature PCB clearance gap to
maximize thermal performance
ULR1S ULR1 ULR15S ULR2 ULR25 ULR3
Footprint size 1206 2512 2010 2512 2512 2512
Power rating at 80°C watts 1.0 1.0 1.5 2.0 2.5 3.0
Resistance range 1 ohms R0006 to R01 R0005
to R015 R001 to R01 R0005
to R01
R004
to R006
R0005
to R003
Isolation voltage volts N/A 200V N/A 200V 200V 200V
TCR ppm/°C 50
50, 75,100,
150
See table
below
50 50 50
50, 100
See table
below
Resistance tolerance % 1(F), 5(J)
Protective coating 2None Black/Green None Black/Green Green Green
Standard values See table below for available values
Ambient temperature range °C -55 to +170
Value ULR1S ULR1 ULR15S ULR2 ULR25 ULR3
Coat TCR Coat TCR Coat TCR Coat TCR Coat TCR Coat TCR
R0005
R0006
Black 50 Black 50 Green 100
R00075 Black 50 Black 50 Green 100
R001 None 50 Black 50 None 50 Black 50 Green 50
R0015 Black 50 Black 50 Green 50
R002 None 50 Black 50 None 50 Black 50 Green 50
R0025 Black 150
R003 None 50 Black 150 None 50 Green 50
R004 None 50 Black 100 None 50 Green 50
R0045 Green 50
R005 None 50 Black 100
Black 100
None 50 Green 50
R0065 Black 75 Green 50
R006 None 50 Black 75 None 50 Green 50
R007 None 50 Black 75 None 50 Green 50
R008 None 50 None 50 Green 50
R009 None 50 None 50 Green 50
R01 None 50 None 50 Green 50
R011 Green 50
R012
R013
R014
Green 50
Green 50
Green 50
R015 Green 50
Welwyn Components
Metal Strip Current Sense
Resistors Surface Mount
ULR Series
· Resistance R0005 (0.5m ) to R015 (15m )
· Low TCR, Low inductance
· Designed for current sensing in power electronic systems
· Solid metal element withstands high current surges
· RoHS compliant
· AEC-Q200 Qualified
Electrical Data
Note 1: For values above 0R015 refer to our LR / LRF Series
Note 2: Colour of coating relates to solder process suitability, see Construction
Standard values available (non-standard values may be available to order - consult factory
None 50
Resistors
All parts are Pb-free and comply with EU 2011/65/EU (RoHS2)
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
· Robust metal strip able to withstand high
temperature and high current.
· Low TCR and Inductance
· Resistance Range from 0.5 mΩ to 22 mΩ
· RoHS compliant
· AEC-Q200
· Higher wattage devices feature PCB clearance gap to
maximize thermal performance
Type Size Coating Power Rating
@ 80°C (W)
Standard Resistance Values
(mΩ) 1
TCR
(±ppm/°C)
Tolerance
(±%)
Dielectric
Withstanding
Voltage (V)
Ambient
Temperature (°C)
ULRG1 /
ULR1S 1206
None 2
10.5, 0.6, 0.75, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10
50
1, 5
N/A
-55 to +170
ULRG15 /
ULR15S 2010 1.5 0.5, 0.75, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10
ULRG1 /
ULR1
2512
Green
1 11, 12, 13, 14, 15, 22
200
ULRG2 /
ULR2 2 6.5, 7, 8, 9, 10
ULRG25 /
ULR25 2.5 3.5, 4, 4.5, 5, 5.5, 6
ULRG3 /
ULR3 30.5, 0.75 100
1, 1.5, 2, 2.5, 3 50
Black
1
0.5, 0.75, 1, 1.5, 2 50
ULRB1 /
ULR1
2.5, 3, 3.5 150
4, 4.5, 5, 5.5, 10 100
6, 6.5, 7, 7.5 75
ULRB2 /
ULR2 2 0.5, 0.75, 1, 1.5, 2 50
Electrical Data
Performance Data
Notes: 1. For higher resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Welwyn Components
Metal Strip Current Sense Resistors Surface Mount
ULR Series
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 .
Termination Details:
Material Matt tin plated finish over a barrier layer
Solderability 95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
Sn Plated Finish
Green Coat & Uncoated
Black
AEC-Q200
Table 7
Method
Max.
(add R0005)
ref. Test
Black &
uncoated Green
3 High Temp. Exposure * MIL-STD-202 Method 108 1 1
4 Temperature Cycling JESD22 Method JA-104 0.5
6 Moisture Resistance MIL-STD-202 Method 106 1 1
7 Biased Humidity MIL-STD-202 Method 103 1 1
8 Operational Life (Cyclic Load) * MIL-STD-202 Method 108 1 1
14 V ibration MIL-STD-202 Method 204 0.5 0.5
15 Resistance to Soldering Heat * MIL-STD-202 Method 210 0.5 1
16 Thermal Shock * MIL-STD-202 Method 107 0.5 1
18 Solderability J-STD-002 >95% coverage
21 B oard Flex AEC-Q200-005 0.5 0.5
22 Terminal Strength AEC-Q200-006 0.25 0.25
Short Term Overload * 5 x Pr for 5s 0.5 1
Notes
:
1. Full AEC-Q200 qualification applies to 2512 size. The 1206 and 2010 sizes have received the tests marked *.
Power de-rating graph 100
%
P
50
%
1
Type Size Coating
Power
Rating
@80°C (W)
Standard Resistance
Value mΩ 1
TCR
(ppm/°C)
Tolerance
(%)
Dielectric
Withstanding
Voltage (V)
Ambient
Temperature
(°C)
ULRG1 /
ULR1S 1206
None 2
10.2, 0.25, 0.3, 0.4, 0.5, 0.6 175
1, 5
N/A
-55 to +170
0.75, 1, 1.2, 2, 2.5, 3, 3.5, 4, 5, 5.5, 6, 7, 8, 9, 10
50
ULRG15 /
ULR15S 2010 1.5 0.2, 0.25, 0.3, 0.4, 0.5 150
0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 5.5, 6, 7, 8, 9, 10
50
200
2512
Green
ULRG2 /
ULR2 2
ULRG25 /
ULR25 2.5 3.5, 4, 4.5, 5, 5.5, 6
ULRG3 /
ULR3 30.15, 0.25, 0.3, 0.4, 0.5, 0.75 150
1, 1.5, 2, 2.5, 3 50
ULRB1 / ULR1
Black
1
0.5, 0.75, 1.5, 2 50
2.5, 3, 3.5 150
4, 4.5, 5, 5.5, 10 100
6, 6.5, 7, 7.5 75
ULRB2 /
ULR2 2 0.5, 0.75, 1, 1.5, 2, 3 50
06.17
General Note
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn
6.5, 7, 7.5, 8, 9, 10
Metal Element
Current Sense Resistor
ULR Series
Robust metal strip able to withstand high
temperature and high current.
Low TCR and Inductance
Resistance Range from 0.15 mΩ to 22 mΩ
RoHS compliant
AEC-Q200
Higher devices feature PCB clearance gap to
maximize thermal performance
ULR1S ULR1 ULR15S ULR2 ULR25 ULR3
Footprint size 1206 2512 2010 2512 2512 2512
Power rating at 80°C watts 1.0 1.0 1.5 2.0 2.5 3.0
Resistance range 1 ohms R0006 to R01 R0005
to R015 R001 to R01 R0005
to R01
R004
to R006
R0005
to R003
Isolation voltage volts N/A 200V N/A 200V 200V 200V
TCR ppm/°C 50
50, 75,100,
150
See table
below
50 50 50
50, 100
See table
below
Resistance tolerance % 1(F), 5(J)
Protective coating 2None Black/Green None Black/Green Green Green
Standard values See table below for available values
Ambient temperature range °C -55 to +170
Value ULR1S ULR1 ULR15S ULR2 ULR25 ULR3
Coat TCR Coat TCR Coat TCR Coat TCR Coat TCR Coat TCR
R0005
R0006
Black 50 Black 50 Green 100
R00075 Black 50 Black 50 Green 100
R001 None 50 Black 50 None 50 Black 50 Green 50
R0015 Black 50 Black 50 Green 50
R002 None 50 Black 50 None 50 Black 50 Green 50
R0025 Black 150
R003 None 50 Black 150 None 50 Green 50
R004 None 50 Black 100 None 50 Green 50
R0045 Green 50
R005 None 50 Black 100
Black 100
None 50 Green 50
R0065 Black 75 Green 50
R006 None 50 Black 75 None 50 Green 50
R007 None 50 Black 75 None 50 Green 50
R008 None 50 None 50 Green 50
R009 None 50 None 50 Green 50
R01 None 50 None 50 Green 50
R011 Green 50
R012
R013
R014
Green 50
Green 50
Green 50
R015 Green 50
Welwyn Components
Metal Strip Current Sense
Resistors Surface Mount
ULR Series
· Resistance R0005 (0.5m ) to R015 (15m )
· Low TCR, Low inductance
· Designed for current sensing in power electronic systems
· Solid metal element withstands high current surges
· RoHS compliant
· AEC-Q200 Qualified
Electrical Data
Note 1: For values above 0R015 refer to our LR / LRF Series
Note 2: Colour of coating relates to solder process suitability, see Construction
Standard values available (non-standard values may be available to order - consult factory
None 50
Resistors
All parts are Pb-free and comply with EU 2011/65/EU (RoHS2)
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
· Robust metal strip able to withstand high
temperature and high current.
· Low TCR and Inductance
· Resistance Range from 0.5 mΩ to 22 mΩ
· RoHS compliant
· AEC-Q200
· Higher wattage devices feature PCB clearance gap to
maximize thermal performance
Type Size Coating Power Rating
@ 80°C (W)
Standard Resistance Values
(mΩ) 1
TCR
(±ppm/°C)
Tolerance
(±%)
Dielectric
Withstanding
Voltage (V)
Ambient
Temperature (°C)
ULRG1 /
ULR1S 1206
None 2
10.5, 0.6, 0.75, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10
50
1, 5
N/A
-55 to +170
ULRG15 /
ULR15S 2010 1.5 0.5, 0.75, 1, 2, 3, 4, 5, 6,
7, 8, 9, 10
ULRG1 /
ULR1
2512
Green
1 11, 12, 13, 14, 15, 22
200
ULRG2 /
ULR2 2 6.5, 7, 8, 9, 10
ULRG25 /
ULR25 2.5 3.5, 4, 4.5, 5, 5.5, 6
ULRG3 /
ULR3 30.5, 0.75 100
1, 1.5, 2, 2.5, 3 50
Black
1
0.5, 0.75, 1, 1.5, 2 50
ULRB1 /
ULR1
2.5, 3, 3.5 150
4, 4.5, 5, 5.5, 10 100
6, 6.5, 7, 7.5 75
ULRB2 /
ULR2 2 0.5, 0.75, 1, 1.5, 2 50
Electrical Data
Performance Data
Notes: 1. For higher resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Welwyn Components
Metal Strip Current Sense Resistors Surface Mount
ULR Series
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 .
Termination Details:
Material Matt tin plated finish over a barrier layer
Solderability 95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
Sn Plated Finish
Green Coat & Uncoated
Black
AEC-Q200
Table 7
Method
Max.
(add R0005)
ref. Test
Black &
uncoated Green
3 High Temp. Exposure * MIL-STD-202 Method 108 1 1
4 Temperature Cycling JESD22 Method JA-104 0.5
6 Moisture Resistance MIL-STD-202 Method 106 1 1
7 Biased Humidity MIL-STD-202 Method 103 1 1
8 Operational Life (Cyclic Load) * MIL-STD-202 Method 108 1 1
14 V ibration MIL-STD-202 Method 204 0.5 0.5
15 Resistance to Soldering Heat * MIL-STD-202 Method 210 0.5 1
16 Thermal Shock * MIL-STD-202 Method 107 0.5 1
18 Solderability J-STD-002 >95% coverage
21 B oard Flex AEC-Q200-005 0.5 0.5
22 Terminal Strength AEC-Q200-006 0.25 0.25
Short Term Overload * 5 x Pr for 5s 0.5 1
Notes
:
1. Full AEC-Q200 qualification applies to 2512 size. The 1206 and 2010 sizes have received the tests marked *.
Power de-rating graph 100
%
P
50
%
1
Type Size Coating
Power
Rating
@80°C (W)
Standard Resistance
Value mΩ 1
TCR
(ppm/°C)
Tolerance
(%)
Dielectric
Withstanding
Voltage (V)
Ambient
Temperature
(°C)
ULRG1 /
ULR1S 1206
None 2
10.2, 0.25, 0.3, 0.4, 0.5, 0.6 175
1, 5
N/A
-55 to +170
0.75, 1, 1.2, 2, 2.5, 3, 3.5, 4, 5, 5.5, 6, 7, 8, 9, 10
50
ULRG15 /
ULR15S 2010 1.5 0.2, 0.25, 0.3, 0.4, 0.5 150
0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 5.5, 6, 7, 8, 9, 10
50
200
2512
Green
ULRG2 /
ULR2 2
ULRG25 /
ULR25 2.5 3.5, 4, 4.5, 5, 5.5, 6
ULRG3 /
ULR3 30.15, 0.25, 0.3, 0.4, 0.5, 0.75 150
1, 1.5, 2, 2.5, 3 50
ULRB1 / ULR1
Black
1
0.5, 0.75, 1, 1.5, 2 50
2.5, 3, 3.5 150
4, 4.5, 5, 5.5, 10 100
6, 6.5, 7, 7.5 75
ULRB2 /
ULR2 2 0.5, 0.75, 1, 1.5, 2, 3 50
06.17
General Note
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn
6.5, 7, 7.5, 8, 9, 10
Electrical Data
Notes: 1. For higher resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
AllpartsarePb-freeandcomplywithEUDirecve2011/65/EUamendedby(EU)2015/863(RoHS3)AllpartsarePb-freeandcomplywithEUDirecve2011/65/EUamendedby(EU)2015/863(RoHS3)
Metal Element
Current Sense Resistor
ULR Series
11.18
General Note
TT Electronics reserves the right to make changes in product specication 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.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Dimensions(mm) and weight (mg)
Size Coating Values L (±0.25) W T (±0.2) D Wt (nom)
1206
None
0.2, 0.25
3.2
1.6 ±0.3 1.0
1.5 ±0.25
250.3 1.4 ±0.25
0.4 1.4 ±0.25
0.5, 0.6, 1 ,4, 5, 6
1.6 ±0.1 0.6
1.1 ±0.25
202, 3, 10 0.6 ±0.25
7, 8, 9 0.9 ±0.25
2010
0.2
5.08
2.54 ±0.3 1.0
2.34 ±0.25
50
0.25 2.24 ±0.25
0.3 2.04 ±0.25
0.4 1.84 ±0.25
0.5, 1, 4, 5
2.54 ±0.15 0.6
1.84 ±0.25
40
2, 6, 7, 8 1.54 ±0.25
3 1.04 ±0.25
9,1 0 1.29 ±0.25
2512
Green
0.15
6.35
3.0 ±0.3 1.0
2.98 ±0.25
60
0.2 2.88 ±0.25
0.25, 3 2.68 ±0.25
0.4 2.18 ±0.25
0.5 - 0.75 3.18 ±0.35 1.0 1.93 ±0.75
1 - 10 0.6
Black
0.5
3.18 ±0.25
1.4
1.3 ±0.38
0.75, 2.5 1.0
1 0.8
1.5 0.65
2, 5, 6 0.5
3 0.7
3.5 0.71
4 0.6
4.5 0.58
5.5, 6.5 0.47
7 0.45
10 0.8 1.9 ±0.15
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
Physical Data
Non
e
2
200
ULR25
ULRG3 /
ULR3
3
100
50
ULR1
Black
1
50
ULRB2 /
ULR1
150
100
75
ULRB2 /
ULR2
2 0.5, 0.75, 1, 1.5, 2 50
Notes: 1. For higher resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Physical Data
Dimensions (mm) and weight (mg)
Size
Coating
Values
L (±0.25)
W
T (±0.2)
D
Wt (nom)
1206
None
0.5, 0.6, 1, 4, 5, 6
3.20 1.6
±0.1
0.6
1.1 ±0.25
20
2, 3, 10
0.6 ±0.25
7, 8, 9
0.9 ±0.25
2010
0.5, 1, 4, 5
5.08 2.54
±0.15
1.84 ±0.25
40
2, 6, 7, 8
1.54 ±0.25
3
1.04 ±0.25
9, 10
1.29 ±0.25
2512
Green
0.5
6.35
3.0
±0.2
2.68 ±0.25
60
0.75
2.48 ±0.25
1, 5, 6
1.93 ±0.25
1.5, 6.5, 7
1.43 ±0.25
2 – 3, 8 - 22
1.18 ±0.25
4, 4.5
2.18 ±0.25
Black
0.5
3.18
±0.25
1.4
1.3 ±0.38
0.75, 2.5
1.0
1
0.8
1.5
0.65
2, 5, 6
0.5
3
0.7
3.5
0.71
4
0.6
4.5
0.58
5.5, 6.5
0.47
7
0.45
10
0.8
1.9 ±0.15
Welwyn Components
Metal Strip Current Sense Resistors Surface Mount
ULR Series
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 .
Termination Details:
Material Matt tin plated finish over a barrier layer
Solderability 95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
Sn Plated Finish
Green Coat & Uncoated
Black
AEC-Q200
Table 7
Method
Max. (add R0005)
ref.
Test Black &
uncoated Green
3 High Temp. Exposure * MIL-STD-202 Method 108 1 1
4 Temperature Cycling JESD22 Method JA-104 0.5 0.5
6 Moisture Resistance MIL-STD-202 Method 106 1 1
Construction
Metal Element
Current Sense Resistor
ULR Series
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
Physical Data
Non
e
2
200
ULRG3 /
ULR3
3
0.5, 0.75
100
1, 1.5, 2, 2.5, 3
50
ULR1
Black
1
0.5, 0.75, 1, 1.5, 2
50
ULRB2 /
ULR1
2.5, 3, 3.5
150
4, 4.5, 5, 5.5, 10
100
6, 6.5, 7
75
ULRB2 /
ULR2
2 0.5, 0.75, 1, 1.5, 2 50
Notes: 1. For higher resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Physical Data
Dimensions (mm) and weight (mg)
Size
Coating
Values
L (±0.25)
W
T (±0.2)
D
Wt (nom)
1206
None
0.5, 0.6, 1, 4, 5, 6
3.20 1.6
±0.1
0.6
1.1 ±0.25
20
2, 3, 10
0.6 ±0.25
7, 8, 9
0.9 ±0.25
2010
0.5, 1, 4, 5
5.08 2.54
±0.15
1.84 ±0.25
40
2, 6, 7, 8
1.54 ±0.25
3
1.04 ±0.25
9, 10
1.29 ±0.25
2512
Green
0.5
6.35
3.0
±0.2
2.68 ±0.25
60
0.75
2.48 ±0.25
1, 5, 6
1.93 ±0.25
1.5, 6.5, 7
1.43 ±0.25
2 – 3, 8 - 22
1.18 ±0.25
4, 4.5
2.18 ±0.25
Black
0.5
3.18
±0.25
1.4
1.3 ±0.38
0.75, 2.5
1.0
1
0.8
1.5
0.65
2, 5, 6
0.5
3
0.7
3.5
0.71
4
0.6
4.5
0.58
5.5, 6.5
0.47
7
0.45
10
0.8
1.9 ±0.15
Welwyn Components
Metal Strip Current Sense Resistors Surface Mount
ULR Series
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 .
Termination Details:
Material Matt tin plated finish over a barrier layer
Solderability 95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
Sn Plated Finish
Green Coat & Uncoated
Black
AEC-Q200
Table 7
Method
Max. (add R0005)
ref.
Test Black &
uncoated Green
3 High Temp. Exposure * MIL-STD-202 Method 108 1 1
4 Temperature Cycling JESD22 Method JA-104 0.5 0.5
6 Moisture Resistance MIL-STD-202 Method 106 1 1
Construction
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
Physical Data
1, 5 -55 to +170
Non
e
2
Green
200
ULRG2 /
ULR2
2 6.5, 7, 8, 9, 10
ULRG25 /
ULR25
2.5 4, 4.5, 5, 6
ULRG3 /
ULR3
3
0.5, 0.75
100
1, 1.5, 2, 2.5, 3
50
ULR1
Black
1
0.5, 0.75, 1, 1.5, 2
50
ULRB2 /
ULR1
2.5, 3, 3.5
150
4, 4.5, 5, 5.5, 10
100
6, 6.5, 7
75
ULRB2 /
ULR2
2 0.5, 0.75, 1, 1.5, 2 50
Notes: 1. For higher resistance values please refer to LRMA series. 2. Package sizes 1206 and 2010 are uncoated on the top surface and unmarked.
Physical Data
Dimensions (mm) and weight (mg)
Size
Coating
Values
L (±0.25)
W
T (±0.2)
D
Wt (nom)
1206
None
0.5, 0.6, 1, 4, 5, 6
3.20 1.6
±0.1
0.6
1.1 ±0.25
20
2, 3, 10
0.6 ±0.25
7, 8, 9
0.9 ±0.25
2010
0.5, 1, 4, 5
5.08 2.54
±0.15
1.84 ±0.25
40
2, 6, 7, 8
1.54 ±0.25
3
1.04 ±0.25
9, 10
1.29 ±0.25
2512
Green
0.5
6.35
3.0
±0.2
2.68 ±0.25
60
0.75
2.48 ±0.25
1, 5, 6
1.93 ±0.25
1.5, 6.5, 7
1.43 ±0.25
2 – 3, 8 - 22
1.18 ±0.25
4, 4.5
2.18 ±0.25
Black
0.5
3.18
±0.25
1.4
1.3 ±0.38
0.75, 2.5
1.0
1
0.8
1.5
0.65
2, 5, 6
0.5
3
0.7
3.5
0.71
4
0.6
4.5
0.58
5.5, 6.5
0.47
7
0.45
10
0.8
1.9 ±0.15
Welwyn Components
Metal Strip Current Sense Resistors Surface Mount
ULR Series
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 .
Termination Details:
Material Matt tin plated finish over a barrier layer
Solderability 95% min coverage (MIL-STD 202F / 208H, 235ºC 2 secs)
Sn Plated Finish
Green Coat & Uncoated
Black
AEC-Q200
Table 7
Method
Max.
(add R0005)
ref.
Test
Black &
uncoated Green
3 High Temp. Exposure * MIL-STD-202 Method 108 1 1
4 Temperature Cycling JESD22 Method JA-104 0.5 0.5
6 Moisture Resistance MIL-STD-202 Method 106 1 1
7 Biased Humidity MIL-STD-202 Method 103 1 1
Construction
06.17
General Note
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
11.18
General Note
TT Electronics reserves the right to make changes in product specication 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.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
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 ULR Issue April 2011 Sheet 3 of 6
a
1.0
L
1.2
4-wire pad layout
L3.45
2-wire pad layout
1.5
5.4
4-wire measurement points
mm :tinumm :tinumm :tinu
0.8 L
1.05 L2.9 1.2
4.32
unit: mm unit: mm unit: mm
0.5
0.7
unit: mm unit: mm unit: mm
L1.9 1.25
2.6
0.5
Probe dia.
0.5
Probe dia.
0.5
Probe dia.
215221522152
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 010201020102
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 602160216021
L
a
aa
aa
Electrical Connections
Note: Nominal values; tolerances not included
Package Resistance
(mΩ)
a L
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
Package Resistance
(mΩ)
a L
2512 - Black All 2.7 2.9
2512 - Green
0.5 3.13 0.52
0.75 2.93 0.94
12.38 2.04
1.5 1.88 3.04
2 - 3 1.63 3.54
4, 4.5 2.63 1.54
5 - 6 2.38 2.04
6.5, 7 1.88 3.04
8 - 22 1.63 3.54
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 ULR Issue April 2011 Sheet 3 of 6
a
1.0
L
1.2
4-wire pad layout
L3.45
2-wire pad layout
1.5
5.4
4-wire measurement points
mm :tinumm :tinumm :tinu
0.8 L
1.05 L2.9 1.2
4.32
unit: mm unit: mm unit: mm
0.5
0.7
unit: mm unit: mm unit: mm
L1.9 1.25
2.6
0.5
Probe dia.
0.5
Probe dia.
0.5
Probe dia.
215221522152
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 010201020102
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 602160216021
L
a
aa
aa
Electrical Connections
Note: Nominal values; tolerances not included
Package Resistance
(mΩ)
a L
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
Package Resistance
(mΩ)
a L
2512 - Black All 2.7 2.9
2512 - Green
0.5 3.13 0.52
0.75 2.93 0.94
12.38 2.04
1.5 1.88 3.04
2 - 3 1.63 3.54
4, 4.5 2.63 1.54
5 - 6 2.38 2.04
6.5, 7 1.88 3.04
8 - 22 1.63 3.54
Vias with copper traces on internal layers. Sense traces on Solder pads beneath the chip
Package Resistance
(mΩ)
a L
1206
0.5, 0.6 1.55 0.55
1, 4 – 6 1.55 0.55
2 – 3, 10 1.05 1.55
7 – 9 1.35 0.95
2010
0.5, 1, 4 - 5 2.29 0.95
2, 6 – 8 1.99 1.55
3 1.49 2.55
9 - 10 1.74 2.05
Suggested Alternative 4-Wire Design Methods
Electrical Connections
Metal Element
Current Sense Resistor
ULR Series
Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
a
1.0
L
1.2
4-wire pad layout
L3.45
2-wire pad layout
1.5
5.4
4-wire measurement points
mm :tinumm :tinumm :tinu
0.8 L
1.05 L2.9 1.2
4.32
unit: mm unit: mm unit: mm
0.5
0.7
unit: mm unit: mm unit: mm
L1.9 1.25
2.6
0.5
Probe dia.
0.5
Probe dia.
0.5
Probe dia.
215221522152
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 010201020102
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 602160216021
L
a
aa
aa
Electrical Connections
Note: Nominal values; tolerances not included
Package Resistance
(mΩ)
a L
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
Package Resistance
(mΩ)
a L
2512 - Black All 2.7 2.9
2512 - Green
0.5 3.13 0.52
0.75 2.93 0.94
12.38 2.04
1.5 1.88 3.04
2 - 3 1.63 3.54
4, 4.5 2.63 1.54
5 - 6 2.38 2.04
6.5, 7 1.88 3.04
8 - 22 1.63 3.54
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 ULR Issue April 2011 Sheet 3 of 6
a
1.0
L
1.2
4-wire pad layout
L3.45
2-wire pad layout
1.5
5.4
4-wire measurement points
mm :tinumm :tinumm :tinu
0.8 L
1.05 L2.9 1.2
4.32
unit: mm unit: mm unit: mm
0.5
0.7
unit: mm unit: mm unit: mm
L1.9 1.25
2.6
0.5
Probe dia.
0.5
Probe dia.
0.5
Probe dia.
215221522152
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 010201020102
stniop tnemerusaem eriw-4tuoyal dap eriw-2tuoyal dap eriw-4 602160216021
L
a
aa
aa
Electrical Connections
Note: Nominal values; tolerances not included
Package Resistance
(mΩ)
a L
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
Package Resistance
(mΩ)
a L
2512 - Black All 2.7 2.9
2512 - Green
0.5 3.13 0.52
0.75 2.93 0.94
12.38 2.04
1.5 1.88 3.04
2 - 3 1.63 3.54
4, 4.5 2.63 1.54
5 - 6 2.38 2.04
6.5, 7 1.88 3.04
8 - 10 1.63 3.54
Package Resistance
(mΩ)
a L
1206
0.5, 0.6 1.55 0.55
1, 4 – 6 1.55 0.55
2 – 3, 10 1.05 1.55
7 – 9 1.35 0.95
2010
0.5, 1, 4 - 5 2.29 0.95
2, 6 – 8 1.99 1.55
3 1.49 2.55
9 - 10 1.74 2.05
Suggested Alternative 4-Wire Design Methods
Electrical Connections
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
oduct specification without notice or liability.
ed accurate at time of going to print.
03.14
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
ULR Issue April 2011 Sheet 3 of 6
L3.45
2-wire pad layout
1.5
5.4
4-wire measurement points
mm :tinu
L2.9 1.2
4.32
unit: mm
unit: mm
L1.9 1.25
2.6
0.5
Probe dia.
0.5
Probe dia.
0.5
Probe dia.
21522152
stniop tnemerusaem eriw-4tu 01020102
stniop tnemerusaem eriw-4tu 60216021
Package Resistance
(mΩ)
a L
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
ULR Issue April 2011 Sheet 3 of 6
L3.45 1.5
5.4
4-wire measurement points
mm :tinu
L2.9 1.2
4.32
unit: mm
unit: mm
L1.9 1.25
2.6
0.5
Probe dia.
0.5
Probe dia.
0.5
Probe dia.
21522152
stniop tnemerusaem eriw-4t 01020102
stniop tnemerusaem eriw-4t 60216021
Package Resistance
(mΩ)
a L
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
Sense traces on Solder pads beneath the chip
Package Resistance
(mΩ)
a L
1206
0.5, 0.6 1.55 0.55
1, 4 – 6 1.55 0.55
2 – 3, 10 1.05 1.55
7 – 9 1.35 0.95
2010
0.5, 1, 4 - 5 2.29 0.95
2, 6 – 8 1.99 1.55
3 1.49 2.55
9 - 10 1.74 2.05
Package Resistance (mΩ)abcde f
1206 0.2 - 0.4 0.75 1.9 0.6 0.6 2.15 0.4
2010 0.2 - 0.4 1.35 2.89 0.6 0.6 3.08 1.4
2512 - Green 0.15 - 0.3 2 3.4 0.6 0.6 2.8 1.0
0.4 1.5 3.4 0.6 0.6 3.8 2.0
a
b d
c
f
e
I+I-
V+V-
06.17
General Note
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
11.18
General Note
TT Electronics reserves the right to make changes in product specication 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.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
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 ULR Issue April 2011 Sheet 4 of 6
W
E
F
ψ D
0
P
1
P
2
P
0
Direction of unreeling
A
B
Top Tape
Resistor
Emboss Tape
T
ψ D
1
Ambient Temperature (°C)
Rated Power (%)
100
50
80 170
0
0
Black Type
A low TCR resistance alloy plate with plated connection
bands is protectively coated and numerically marked with
the resistance value, as described in Product Marking. This
version has standard plated connection and is suitable for
wave or IR re ow soldering processes.
Green Type
A low TCR alloy plate is grooved to set the nal resistance.
The lower faces are solder plated for connections, and the top
surface is protectively coated and numerically marked with the
resistance value, as described in Product Marking. This part
is suitable for wave and IR re ow soldering processes. Wave
re ow requires the solder mask to be dimensioned according to
page 2 using the W and D dimensions of the part.
Construction
Plastic Tape Speci fication
Note:
The cumulative tolerance of 10 sprocket hole pitch is ± 0.2 mm.1.
Carrier camber shall not be more than 1 mm per 100 mm through a length of 250 mm.2.
A & B measured 0.3 mm from the bottom of the packet.3.
T measured at a point on the inside bottom of the packet to the top surface of the carrier.4.
Pocket position relative to sprocket hole is measured as the true position of the pocket and not the pocket hole.5.
Power Derating Curve
Note:
The power derating curve is a guidance based on a
conservative design model. The ULR is a solid metal
alloy construction that can withstand signifi cantly greater
operating temperatures than the conservative model
permits. The protective coating will operate up to
260°C and the alloy can withstand in excess of 350°C.
Therefore, the system thermal design will be a more
signifi cant design parameter due to the heat limitations of
the solder joint.
Type Resistance
(mΩ) AB W E FP0P1P2ΦD0ΦD1TQuantity
(EA)
1206 1 -10 1.90 ± 0.1 3.60 ± 0.1 8.0 ± 0.2 1.75 ± 0.1 3.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.0min. 0.87 ± 0.1 2,000
2010 1 -10 2.85 ± 0.1 5.55 ± 0.1 12.0 ± 0.2 1.75 ± 0.1 5.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.4min 0.85 ± 0.1 2,000
2512
Black
0.50 - 0.75
3.40 ± 0.1 6.75 ± 0.1 12.0 ± 0.1 1.75 ± 0.1 5.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.4min
1.45 ± 0.2
2,000
1 - 10 0.81 ± 0.1
2512
Green 0.50 -15 3.40 ± 0.1 6.75 ± 0.1 12.0 ± 0.1 1.75 ± 0.1 5.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.4min 0.81 ± 0.1 2,000
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 ULR Issue April 2011 Sheet 4 of 6
W
E
F
ψ D
0
P
1
P
2
P
0
Direction of unreeling
A
B
Top Tape
Resistor
Emboss Tape
T
ψ D
1
Ambient Temperature (°C)
Rated Power (%)
100
50
80 170
0
0
Black Type
A low TCR resistance alloy plate with plated connection
bands is protectively coated and numerically marked with
the resistance value, as described in Product Marking. This
version has standard plated connection and is suitable for
wave or IR re ow soldering processes.
Green Type
A low TCR alloy plate is grooved to set the nal resistance.
The lower faces are solder plated for connections, and the top
surface is protectively coated and numerically marked with the
resistance value, as described in Product Marking. This part
is suitable for wave and IR re ow soldering processes. Wave
re ow requires the solder mask to be dimensioned according to
page 2 using the W and D dimensions of the part.
Construction
Plastic Tape Speci fication
Note:
The cumulative tolerance of 10 sprocket hole pitch is ± 0.2 mm.1.
Carrier camber shall not be more than 1 mm per 100 mm through a length of 250 mm.2.
A & B measured 0.3 mm from the bottom of the packet.3.
T measured at a point on the inside bottom of the packet to the top surface of the carrier.4.
Pocket position relative to sprocket hole is measured as the true position of the pocket and not the pocket hole.5.
Power Derating Curve
Note:
The power derating curve is a guidance based on a
conservative design model. The ULR is a solid metal
alloy construction that can withstand signifi cantly greater
operating temperatures than the conservative model
permits. The protective coating will operate up to
260°C and the alloy can withstand in excess of 350°C.
Therefore, the system thermal design will be a more
signifi cant design parameter due to the heat limitations of
the solder joint.
Type Resistance
(mΩ) AB W E FP0P1P2ΦD0ΦD1TQuantity
(EA)
1206 1 -10 1.90 ± 0.1 3.60 ± 0.1 8.0 ± 0.2 1.75 ± 0.1 3.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.0min. 0.87 ± 0.1 2,000
2010 1 -10 2.85 ± 0.1 5.55 ± 0.1 12.0 ± 0.2 1.75 ± 0.1 5.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.4min 0.85 ± 0.1 2,000
2512
Black
0.50 - 0.75
3.40 ± 0.1 6.75 ± 0.1 12.0 ± 0.1 1.75 ± 0.1 5.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.4min
1.45 ± 0.2
2,000
1 - 10 0.81 ± 0.1
2512
Green 0.15 -10 3.40 ± 0.1 6.75 ± 0.1 12.0 ± 0.1 1.75 ± 0.1 5.5 ± 0.05 4.0 ± 0.1 4.0 ± 0.1 2.0 ± 0.05 1.55 ± 0.05 1.4min 0.81 ± 0.1 2,000
Power Derating Curve
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
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 ULR Issue April 2011 Sheet 3 of 6
Note: Nominal values; tolerances not included
2010 - Green
11.55 0.55
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
(mΩ)
2512 - Black All 2.7 2.9
2512 - Green
0.5 3.13 0.52
0.75 2.93 0.94
12.38 2.04
1.5 1.88 3.04
2 - 3 1.63 3.54
4, 4.5 2.63 1.54
5 - 6 2.38 2.04
6.5, 7 1.88 3.04
8 - 22 1.63 3.54
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 ULR Issue April 2011 Sheet 3 of 6
Note: Nominal values; tolerances not included
2010 - Green
2 - 3 1.05 1.55
4 - 6 1.55 0.55
7 - 9 1.35 0.95
10 1.05 1.55
1206 - Green
12.29 0.95
2 1.99 1.55
3 1.49 2.55
4 - 5 2.29 0.95
6 - 8 1.99 1.55
9 - 10 1.74 2.05
2512 - Green
0.5 3.13 0.52
0.75 2.93 0.94
12.38 2.04
1.5 1.88 3.04
2 - 3 1.63 3.54
4, 4.5 2.63 1.54
5 - 6 2.38 2.04
6.5, 7 1.88 3.04
8 - 22 1.63 3.54
Vias with copper traces on internal layers. Sense traces on Solder pads beneath the chip
1206 1, 4 – 6 1.55 0.55
2 – 3, 10 1.05 1.55
7 – 9 1.35 0.95
2010
0.5, 1, 4 - 5 2.29 0.95
2, 6 – 8 1.99 1.55
3 1.49 2.55
9 - 10 1.74 2.05
Suggested Alternative 4-Wire Design Methods
06.17
General Note
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
11.18
General Note
TT Electronics reserves the right to make changes in product specication 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.ttelectronics.com/resistors
BI Technologies IRC Welwyn
Metal Element
Current Sense Resistor
ULR Series
Metal Element
Current Sense Resistor
ULR Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
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.
© TT electronics plc
03.14
Ordering Procedure
This product has two valid part numbers:
European (Welwyn) Part Number: ULR2-R0015FT2 (2512, 1.5 milliohms ±1%, Pb-free)
U
L
R
2
-
R
0
0
1
5
F
T
2
1
2
3
4
USA (IRC) Part Number: ULRB22512R0015FLFSLT (2512, 1.5 milliohms ±1%, Pb-free)
U
L
R
B
2
2
5
1
2
R
0
0
1
5
F
L
F
S
L
T
1
2
3
4
5
6
1
2
3
4
Type Value Tolerance Packing
ULR1S
3 to 6 characters
F = ±1%
T2 = Plastic tape
ULR1
R = ohms
J = ±5%
All sizes
2000/reel
ULR15S
ULR2
ULR25
ULR3
1
2
3
4
5
6
Type Size Value Tolerance Termination Packing
ULRG1
1206
4 - 6 characters
F = ±1%
LF = Pb-free
SLT = Plastic tape
ULRG15
2010
R = ohms
J = ±5%
All sizes
2000/reel
ULRG2
2512
ULRG25
ULRG3
ULRB2
ULRB1
Ordering Procedure
06.17
General Note
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronics.com/resistors
BI Technologies IRC Welwyn