Metal Element Current Sense Resistor

ULR Series

03.24

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

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

Green

Underside

0.2, 0.25

3.2

1.6 ±0.3

1.0

1.5 ±0.25

25

0.3, 0.4

1.4 ±0.25

0.5, 0.6

1.6 ±0.1

0.6

1.35 ±0.25

20

0.75

1.23 ±0.25

1, 1.2, 3.5, 4, 5, 5.5, 6

1.1 ±0.25

2, 2.5, 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

2.54

±0.15

0.6

2.17 ±0.25

40

0.75

2.04 ±0.25

1, 1.5, 4, 5, 5.5

1.84 ±0.25

2, 2.5, 6, 7, 8

1.54 ±0.25

3

1.04 ±0.25

9, 10

1.29 ±0.25

1020

1, 1.5, 2, 2.5, 3

2.54

5.08±0.25

0.6

0.57 ±0.25

45

2512

0.15

6.35

3.0 ±0.3

1.0

2.98 ±0.25

60

0.2

2.88 ±0.25

0.25, 0.3

2.68 ±0.25

0.4

2.18 ±0.25

0.5

3.0 ±0.2

0.6

2.68 ±0.25

0.75

2.48 ±0.25

1, 5, 5.5, 6

1.93 ±0.25

2, 2.5, 3, 3.5, 8, 9, 10

1.18 ±0.25

4, 4.5

2.18 ±0.25

1.5, 6.5, 7, 7.5

1.43 ±0.25

1225

0.1, 0.2,

3.0

6.35±0.25

1

1.0±0.25

65

0.25, 0.3, 0.4

1

0.5±0.25

0.5, 0.7, 0.75, 0.8, 0.9,

1.0

0.6

0.5±0.25

1.5

0.6

1.0±0.25

2

0.6

0.8±0.25

2.5, 3

0.6

0.5±0.25

2512

Black

0.5

6.35

3.18

±0.25

1.4

1.3 ±0.38

60

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

Dimensions(mm) and weight (mg)

Size

Coating

Values

L (±0.25)

W

T (±0.2)

D

Wt (nom)

1206

0.2, 0.25

3.2

1.6 ±0.3

1.0

1.5 ±0.25

25

0.3

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

20

2, 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

Underside

0.15

6.35

3.0 ±0.3

1.0

2.98 ±0.25

60

0.2

2.88 ±0.25

0.25, 0.3

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

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

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 Underside Coat

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 black coated 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 copper.

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

Physical Data

11.21

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

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

Green

Underside

0.2, 0.25

3.2

1.6 ±0.3

1.0

1.5 ±0.25

25

0.3, 0.4

1.4 ±0.25

0.5, 0.6

1.6 ±0.1

0.6

1.35 ±0.25

20

0.75

1.23 ±0.25

1, 1.2, 3.5, 4, 5, 5.5, 6

1.1 ±0.25

2, 2.5, 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

2.54

±0.15

0.6

2.17 ±0.25

40

0.75

2.04 ±0.25

1, 1.5, 4, 5, 5.5

1.84 ±0.25

2, 2.5, 6, 7, 8

1.54 ±0.25

3

1.04 ±0.25

9, 10

1.29 ±0.25

1020

1, 1.5, 2, 2.5, 3

2.54

5.08±0.25

0.6

0.57 ±0.25

45

2512

0.15

6.35

3.0 ±0.3

1.0

2.98 ±0.25

59

0.2

2.88 ±0.25

0.25, 0.3

2.68 ±0.25

0.4

2.18 ±0.25

0.5

3.0 ±0.2

0.6

2.68 ±0.25

0.75

2.48 ±0.25

1, 5, 5.5, 6

1.93 ±0.25

2, 2.5, 3, 3.5, 8, 9, 10

1.18 ±0.25

4, 4.5

2.18 ±0.25

1.5, 6.5, 7, 7.5

1.43 ±0.25

1225

0.1, 0.2,

3.0

6.35±0.25

1

1.0±0.25

65

0.25, 0.3, 0.4

1

0.5±0.25

0.5, 0.7, 0.75, 0.8, 0.9,

1.0

0.6

0.5±0.25

1.5

0.6

1.0±0.25

2

0.6

0.8±0.25

2.5, 3

0.6

0.5±0.25

2512

Black

0.5

6.35

3.18

±0.25

1.25

1.85 ±0.38

184

0.75

0.75

1.55 ±0.38

131

1

0.65

111

1.5

0.45

69

2

0.35

49

2.5

0.65

1.4 ±0.38

98

3

0.55

83

4

0.45

63

5

0.35

50

6

0.32

42

6.5

0.3

36

7

0.27

34

10

0.25

26

Dimensions(mm) and weight (mg)

Size

Coating

Values

L (±0.25)

W

T (±0.2)

D

Wt (nom)

1206

0.2, 0.25

3.2

1.6 ±0.3

1.0

1.5 ±0.25

25

0.3

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

20

2, 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

Underside

0.15

6.35

3.0 ±0.3

1.0

2.98 ±0.25

60

0.2

2.88 ±0.25

0.25, 0.3

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

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

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 Underside Coat

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 black coated 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 copper.

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