Current Sense Resistors - SMD

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OARS Open Air Sense Resistors

IRC / TT Electronics OARS Open Air Sense Resistors are rated for 1W at 85°C (2W at 25°C) with resistance values from 0.002Ω to 0.05Ω with tolerances down to +1%. They feature TCRs as low as +20ppm/°C and inductance values in the single‐digit nanohenry range. Operating range is ‐40°C to +125°C. IRC / TT Electronics OARS Open Air Sense Resistors offer compliant terminations that allow them to expand and contract with the PC board's thermal cycling, enabling them to meet or exceed the 1000-2000 cycles required by most automotive manufacturers. This thermal cycling stresses the solder joints of conventional flat chip resistors, which can often cause failure. The unique lead form of the OARS resistors provides an inherent advantage in compliance to the mechanical stress caused by thermal cycling. The welded copper terminals in the OARS Open Air Sense Resistors also provide a low resistance terminal to enhance reliable performance for demanding applications.

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Part #

Current Sense Resistors - SMD .025 OHM 1%

OARSXPR025FLF
BI Technologies / TT Electronics
1: S/8.87
2,944In Stock
2,400Expected 11/26/2026

Mfr. Part #
OARSXPR025FLF

Mouser Part #
66-OARSXPR025FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .025 OHM 1%

Learn More

Datasheet

2,944In Stock

2,400Expected 11/26/2026

Cut Tape

S/8.87

S/5.92

S/4.59

S/4.16

Reel

S/2.76

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

25 mOhms

5 W

1 %

40 PPM / C

12 mm (0.472 in)

6.35 mm (0.25 in)

4.57 mm (0.18 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 0.02 ohm 1% 2W Sense Resistor

OARS1-R020FI
BI Technologies / TT Electronics
1: S/7.55
3,753In Stock

Mfr. Part #
OARS1-R020FI

Mouser Part #
756-OARS1-R020FI

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.02 ohm 1% 2W Sense Resistor

Datasheet

3,753In Stock

Cut Tape

S/7.55

S/4.36

S/3.55

S/2.66

Reel

S/1.63

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,800

Reel, Cut Tape, MouseReel

OARS

20 mOhms

2 W

1 %

20 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 55 C

+ 160 C

Metal Element

2 Terminal

SMD/SMT

Current Sense Resistors - SMD 0.015 ohm 1% 2W Sense Resistor

OARS1-R015FI
BI Technologies / TT Electronics
1: S/7.59
4In Stock

Mfr. Part #
OARS1-R015FI

Mouser Part #
756-OARS1-R015FI

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.015 ohm 1% 2W Sense Resistor

Datasheet

4In Stock

Cut Tape

S/7.59

S/4.40

S/3.56

S/2.66

Reel

S/1.64

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,800

Reel, Cut Tape, MouseReel

OARS

15 mOhms

2 W

1 %

20 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 55 C

+ 160 C

Metal Element

2 Terminal

SMD/SMT

Current Sense Resistors - SMD ZERO OHM

OARS1ZEROHMTR-LF
BI Technologies / TT Electronics
1: S/6.42
2,105In Stock

Mfr. Part #
OARS1ZEROHMTR-LF

Mouser Part #
66-OARS1ZEROHMTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD ZERO OHM

Learn More

Datasheet

2,105In Stock

Cut Tape

S/6.42

S/3.76

S/3.37

S/2.66

View

Reel

S/1.95

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

0 Ohms

2 W

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 1W 0.01 5%

OARS1R010JLF
BI Technologies / TT Electronics
1: S/7.12
2,629In Stock

Mfr. Part #
OARS1R010JLF

Mouser Part #
66-OARS1R010JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.01 5%

Learn More

Datasheet

2,629In Stock

Cut Tape

S/7.12

S/4.13

S/3.34

S/2.50

Reel

S/1.77

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

10 mOhms

2 W

5 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .040 OHM 5%

OARS1R040JLF
BI Technologies / TT Electronics
1: S/7.12
1,439In Stock

Mfr. Part #
OARS1R040JLF

Mouser Part #
66-OARS1R040JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .040 OHM 5%

Learn More

Datasheet

1,439In Stock

Cut Tape

S/7.12

S/4.13

S/3.34

S/2.50

Reel

S/1.77

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

40 mOhms

2 W

5 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 3W 0.010 ohm 1%

OARS3R010FLF
BI Technologies / TT Electronics
1: S/9.50
165In Stock

Mfr. Part #
OARS3R010FLF

Mouser Part #
66-OARS3R010FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.010 ohm 1%

Learn More

Datasheet

165In Stock

Cut Tape

S/9.50

S/5.80

S/5.33

S/4.20

View

Reel

S/3.08

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

10 mOhms

3 W

1 %

40 PPM / C

11.56 mm (0.455 in)

3.56 mm (0.14 in)

3.51 mm (0.138 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 0.03 ohm 1% 2W Sense Resistor

OARS1-R030FI
BI Technologies / TT Electronics
1: S/7.59
3,444In Stock

Mfr. Part #
OARS1-R030FI

Mouser Part #
756-OARS1-R030FI

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.03 ohm 1% 2W Sense Resistor

Datasheet

3,444In Stock

Cut Tape

S/7.59

S/4.40

S/3.56

S/2.66

Reel

S/1.89

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

30 mOhms

2 W

1 %

20 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 55 C

+ 160 C

Metal Element

2 Terminal

SMD/SMT

Current Sense Resistors - SMD 3W 0.003 ohm 1%

OARS3R003FLF
BI Technologies / TT Electronics
1: S/5.57
1,598In Stock

Mfr. Part #
OARS3R003FLF

Mouser Part #
66-OARS3R003FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.003 ohm 1%

Learn More

Datasheet

1,598In Stock

Cut Tape

S/5.57

S/5.22

S/4.98

S/4.20

Reel

S/3.08

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

3 mOhms

3 W

1 %

240 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.51 mm (0.138 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 2W 0.005 1%

OARS1R005FLF
BI Technologies / TT Electronics
1: S/6.34
11,215In Stock
1,900Expected 11/10/2026

Mfr. Part #
OARS1R005FLF

Mouser Part #
66-OARS1R005FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 0.005 1%

Learn More

Datasheet

11,215In Stock

1,900Expected 11/10/2026

Cut Tape

S/6.34

S/4.20

S/3.23

S/2.57

Reel

S/2.03

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

5 mOhms

2 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 3W 0.002 ohm 5%

OARS3R002JLF
BI Technologies / TT Electronics
1: S/9.11
6,455In Stock

Mfr. Part #
OARS3R002JLF

Mouser Part #
66-OARS3R002JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.002 ohm 5%

Learn More

Datasheet

6,455In Stock

Cut Tape

S/9.11

S/5.57

S/5.10

S/4.16

Reel

S/2.95

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

2 mOhms

3 W

1 %

240 PPM / C

11.56 mm (0.455 in)

3.56 mm (0.14 in)

3.51 mm (0.138 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 1W 0.003 1%

OARS1R003FLF
BI Technologies / TT Electronics
1: S/6.34
1,834In Stock

Mfr. Part #
OARS1R003FLF

Mouser Part #
66-OARS1R003FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.003 1%

Learn More

Datasheet

1,834In Stock

Cut Tape

S/6.34

S/3.87

S/3.23

S/2.78

Reel

S/1.89

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

3 mOhms

2 W

1 %

240 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.51 mm (0.138 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .015 OHM 1%

OARS1R015FLF
BI Technologies / TT Electronics
1: S/7.59
95In Stock
3,800Expected 2/26/2027

Mfr. Part #
OARS1R015FLF

Mouser Part #
66-OARS1R015FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .015 OHM 1%

Learn More

Datasheet

95In Stock

3,800Expected 2/26/2027

Cut Tape

S/7.59

S/4.40

S/3.43

S/2.78

View

Reel

S/1.92

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

15 mOhms

1 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 2W 0.02 Ohms 1%

OARS1R020FLF
BI Technologies / TT Electronics
1: S/6.70
5In Stock
22,800On Order

Mfr. Part #
OARS1R020FLF

Mouser Part #
66-OARS1R020FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 0.02 Ohms 1%

Learn More

Datasheet

5In Stock

22,800On Order

Cut Tape

S/6.70

S/4.05

S/3.22

S/2.60

View

Reel

S/1.87

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

20 mOhms

2 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 2W 25 mOhms '1%

OARS1R025FLF
BI Technologies / TT Electronics
1: S/6.66
1,341In Stock
9,500Expected 3/12/2027

Mfr. Part #
OARS1R025FLF

Mouser Part #
66-OARS1R025FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 25 mOhms '1%

Datasheet

1,341In Stock

9,500Expected 3/12/2027

Cut Tape

S/6.66

S/4.36

S/3.34

S/2.66

View

Reel

S/1.87

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

25 mOhms

2 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 2W 40 mOhms '1%

OARS1R040FLF
BI Technologies / TT Electronics
1: S/7.55
52In Stock
3,800Expected 9/21/2026

Mfr. Part #
OARS1R040FLF

Mouser Part #
66-OARS1R040FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 40 mOhms '1%

Datasheet

52In Stock

3,800Expected 9/21/2026

Cut Tape

S/7.55

S/4.36

S/3.55

S/2.66

Reel

S/1.89

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

40 mOhms

1 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 0.05 OHM 1%

OARS1R050FLF
BI Technologies / TT Electronics
1: S/5.96
13In Stock
17,100On Order

Mfr. Part #
OARS1R050FLF

Mouser Part #
66-OARS1R050FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.05 OHM 1%

Learn More

Datasheet

13In Stock

17,100On Order

Cut Tape

S/5.96

S/3.93

S/3.01

S/2.77

View

Reel

S/1.74

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

50 mOhms

2 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 3W 0.005 ohm 1%

OARS3R005FLF
BI Technologies / TT Electronics
1: S/9.30
38In Stock
3,800Expected 11/13/2026

Mfr. Part #
OARS3R005FLF

Mouser Part #
66-OARS3R005FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.005 ohm 1%

Learn More

Datasheet

38In Stock

3,800Expected 11/13/2026

Cut Tape

S/9.30

S/5.99

S/5.02

S/4.20

View

Reel

S/3.08

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

5 mOhms

3 W

1 %

40 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.05 mm (0.12 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .001 OHM 1%

OARSXPR001FLF
BI Technologies / TT Electronics
1: S/10.04
1,439In Stock

Mfr. Part #
OARSXPR001FLF

Mouser Part #
66-OARSXPR001FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .001 OHM 1%

Learn More

Datasheet

1,439In Stock

Cut Tape

S/10.04

S/6.73

S/5.25

S/4.75

Reel

S/3.18

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

1 mOhms

5 W

1 %

240 PPM / C

12 mm (0.472 in)

6.35 mm (0.25 in)

4.57 mm (0.18 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .002 OHM 1%

OARSXPR002FLF
BI Technologies / TT Electronics
1: S/10.04
1,222In Stock
2,400Expected 1/8/2027

Mfr. Part #
OARSXPR002FLF

Mouser Part #
66-OARSXPR002FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .002 OHM 1%

Learn More

Datasheet

1,222In Stock

2,400Expected 1/8/2027

Cut Tape

S/10.04

S/6.73

S/5.25

S/4.75

Reel

S/3.18

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

2 mOhms

5 W

1 %

40 PPM / C

12 mm (0.472 in)

6.35 mm (0.25 in)

4.57 mm (0.18 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .005 OHM 1%

OARSXPR005FLF
BI Technologies / TT Electronics
1: S/11.13
63In Stock
6,000On Order

Mfr. Part #
OARSXPR005FLF

Mouser Part #
66-OARSXPR005FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .005 OHM 1%

Learn More

Datasheet

63In Stock

6,000On Order

Cut Tape

S/11.13

S/7.28

S/5.84

S/5.02

View

Reel

S/3.88

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

5 mOhms

5 W

1 %

40 PPM / C

12 mm (0.472 in)

6.35 mm (0.25 in)

4.57 mm (0.18 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .010 OHM 1%

OARSXPR010FLF
BI Technologies / TT Electronics
1: S/9.65
73In Stock
6,000Expected 2/19/2027

Mfr. Part #
OARSXPR010FLF

Mouser Part #
66-OARSXPR010FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .010 OHM 1%

Learn More

Datasheet

73In Stock

6,000Expected 2/19/2027

Cut Tape

S/9.65

S/6.03

S/4.94

S/4.24

View

Reel

S/3.34

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

10 mOhms

5 W

1 %

40 PPM / C

12 mm (0.472 in)

6.35 mm (0.25 in)

4.57 mm (0.18 in)

- 40 C

+ 125 C

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 0.003 ohm 1% 2W Sense Resistor

OARS1-R003FI
BI Technologies / TT Electronics
1: S/7.08
155In Stock
7,600Expected 12/11/2026

Mfr. Part #
OARS1-R003FI

Mouser Part #
756-OARS1-R003FI

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.003 ohm 1% 2W Sense Resistor

Datasheet

155In Stock

7,600Expected 12/11/2026

Cut Tape

S/7.08

S/4.16

S/3.74

S/2.95

Reel

S/1.95

View

MouseReel Available

Min.: 1
Mult.: 1

: 3,800

Reel, Cut Tape, MouseReel

OARS

3 mOhms

2 W

1 %

20 PPM / C

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.51 mm (0.138 in)

- 55 C

+ 160 C

Metal Element

2 Terminal

SMD/SMT

Current Sense Resistors - SMD ZERO OHM JUMPER

OARS-1ZLF
BI Technologies / TT Electronics
1: S/6.73
15In Stock
3,800Expected 12/3/2026

Mfr. Part #
OARS-1ZLF

Mouser Part #
66-OARS-1ZLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD ZERO OHM JUMPER

Datasheet

15In Stock

3,800Expected 12/3/2026

Cut Tape

S/6.73

S/3.93

S/3.55

S/2.80

Reel

S/2.02

View

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .003 OHM 5%

OARS1R003JLF
BI Technologies / TT Electronics
1: S/6.77
383In Stock

Mfr. Part #
OARS1R003JLF

Mouser Part #
66-OARS1R003JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .003 OHM 5%

Learn More

Datasheet

383In Stock

Cut Tape

S/6.77

S/3.97

S/3.55

S/2.99

View

Reel

S/2.06

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

11.18 mm (0.44 in)

3.18 mm (0.125 in)

3.51 mm (0.138 in)

- 40 C

+ 125 C

Metal Element

SMD/SMT

AEC-Q200

OARS Open Air Sense Resistors

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