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 .005 OHM 1%

OARSXPR005FLF
BI Technologies / TT Electronics
1: $3.85
16In Stock
6,000On Order

Mfr. Part No.
OARSXPR005FLF

Mouser Part No
66-OARSXPR005FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .005 OHM 1%

Learn More

Datasheet

16In Stock

6,000On Order

Cut Tape

$3.85

$2.40

$1.88

$1.52

$1.39

Reel

$1.39

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 0.003 ohm 1% 2W Sense Resistor

OARS1-R003FI
BI Technologies / TT Electronics
1: $2.53
138In Stock
7,600Expected 11/12/2026

Mfr. Part No.
OARS1-R003FI

Mouser Part No
756-OARS1-R003FI

BI Technologies / TT Electronics

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

Datasheet

138In Stock

7,600Expected 11/12/2026

Cut Tape

$2.53

$1.49

$1.34

$1.05

Reel

$0.695

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 .003 OHM 5%

OARS1R003JLF
BI Technologies / TT Electronics
1: $2.42
383In Stock

Mfr. Part No.
OARS1R003JLF

Mouser Part No
66-OARS1R003JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .003 OHM 5%

Learn More

Datasheet

383In Stock

Cut Tape

$2.42

$1.42

$1.27

$1.13

Reel

$0.726

View

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

Current Sense Resistors - SMD 2W 1%

OARS1R010FLF
BI Technologies / TT Electronics
1: $2.71
5,169Expected 25/9/2026

Mfr. Part No.
OARS1R010FLF

Mouser Part No
66-OARS1R010FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 1%

Learn More

Datasheet

5,169Expected 25/9/2026

Cut Tape

$2.71

$1.57

$1.27

$0.951

View

Reel

$0.667

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

10 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 30 mOhms '1%

OARS1R030FLF
BI Technologies / TT Electronics
1: $1.90
3,648Expected 11/12/2026

Mfr. Part No.
OARS1R030FLF

Mouser Part No
66-OARS1R030FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 30 mOhms '1%

Datasheet

3,648Expected 11/12/2026

Cut Tape

$1.90

$1.32

$1.18

$1.08

$0.667

Reel

$0.667

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

30 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 3W 0.004 ohm 1%

OARS3R004FLF
BI Technologies / TT Electronics
1: $3.39
2,800Expected 2/10/2026

Mfr. Part No.
OARS3R004FLF

Mouser Part No
66-OARS3R004FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.004 ohm 1%

Learn More

Datasheet

2,800Expected 2/10/2026

Cut Tape

$3.39

$2.07

$1.90

$1.50

View

Reel

$0.901

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

4 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 3W 0.010 ohm 1%

OARS3R010FLF
BI Technologies / TT Electronics
1: $2.53
3,792Expected 25/9/2026

Mfr. Part No.
OARS3R010FLF

Mouser Part No
66-OARS3R010FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.010 ohm 1%

Learn More

Datasheet

3,792Expected 25/9/2026

Cut Tape

$2.53

$1.86

$1.78

$1.65

$1.10

Reel

$1.10

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 .0025 OHM 1%

OARSXPR0025FLF
BI Technologies / TT Electronics
1: $4.28
4,507On Order

Mfr. Part No.
OARSXPR0025FLF

Mouser Part No
66-OARSXPR0025FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .0025 OHM 1%

Learn More

Datasheet

4,507On Order

Cut Tape

$4.28

$2.52

$2.18

$2.03

View

Reel

$1.39

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

2.5 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 .020 OHM 1%

OARSXPR020FLF
BI Technologies / TT Electronics
1: $3.48
2,400Expected 8/1/2027

Mfr. Part No.
OARSXPR020FLF

Mouser Part No
66-OARSXPR020FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .020 OHM 1%

Learn More

Datasheet

2,400Expected 8/1/2027

Cut Tape

$3.48

Reel

$1.10

MouseReel Available

Min.: 1
Mult.: 1

: 1,200

Reel, Cut Tape, MouseReel

OARS

20 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 0.01 ohm 1% 2W Sense Resistor

OARS1-R010FI
BI Technologies / TT Electronics
1: $2.71
4,666On Order

Mfr. Part No.
OARS1-R010FI

Mouser Part No
756-OARS1-R010FI

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.01 ohm 1% 2W Sense Resistor

Datasheet

4,666On Order

Cut Tape

$2.71

$1.57

$1.27

$0.951

View

Reel

$0.676

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

10 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)

- 55 C

+ 160 C

Metal Element

2 Terminal

SMD/SMT

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

OARS1-R020FI
BI Technologies / TT Electronics
1: $2.71
3,800Expected 2/10/2026

Mfr. Part No.
OARS1-R020FI

Mouser Part No
756-OARS1-R020FI

BI Technologies / TT Electronics

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

Datasheet

3,800Expected 2/10/2026

Cut Tape

$2.71

$1.56

$1.27

$0.952

View

Reel

$0.667

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 0.005 ohm 1% 2W Sense Resistor

OARS1-R005FI
BI Technologies / TT Electronics
1: $2.54
2,083On Order

Mfr. Part No.
OARS1-R005FI

Mouser Part No
756-OARS1-R005FI

BI Technologies / TT Electronics

Current Sense Resistors - SMD 0.005 ohm 1% 2W Sense Resistor

Datasheet

2,083On Order

Cut Tape

$2.54

$1.50

$1.34

$0.82

View

Reel

$0.688

MouseReel Available

Min.: 1
Mult.: 1

: 3,800

Reel, Cut Tape, MouseReel

OARS

5 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 2W 0.002 Ohms 1%

OARS1R002FLF
BI Technologies / TT Electronics
3,800: $0.681
Non-Stocked

Mfr. Part No.
OARS1R002FLF

Mouser Part No
66-OARS1R002FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 0.002 Ohms 1%

Datasheet

Non-Stocked

Cut Tape

$0.681

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

2 mOhms

2 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 2W 2 mOhms '5%

OARS1R002JLF
BI Technologies / TT Electronics
3,800: $0.605
Non-Stocked

Mfr. Part No.
OARS1R002JLF

Mouser Part No
66-OARS1R002JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 2 mOhms '5%

Datasheet

Non-Stocked

Cut Tape

$0.605

$0.603

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

2 mOhms

2 W

5 %

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 0.004 1%

OARS1R004FLF
BI Technologies / TT Electronics
3,800: $0.623
Non-Stocked

Mfr. Part No.
OARS1R004FLF

Mouser Part No
66-OARS1R004FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.004 1%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.623

$0.614

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

4 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 4 mOhms '5%

OARS1R004JLF
BI Technologies / TT Electronics
3,800: $0.591
Non-Stocked

Mfr. Part No.
OARS1R004JLF

Mouser Part No
66-OARS1R004JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 4 mOhms '5%

Datasheet

Non-Stocked

Cut Tape

$0.591

$0.584

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

2 W

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .005 OHM 1W 5%

OARS1R005JTR-LF
BI Technologies / TT Electronics
3,800: $0.481
Non-Stocked

Mfr. Part No.
OARS1R005JTR-LF

Mouser Part No
66-OARS1R005JTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .005 OHM 1W 5%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.481

$0.455

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

5 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 .01 OHM 1W 5%

OARS1R010JTR-LF
BI Technologies / TT Electronics
3,800: $0.413
Non-Stocked

Mfr. Part No.
OARS1R010JTR-LF

Mouser Part No
66-OARS1R010JTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .01 OHM 1W 5%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.413

$0.386

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

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 1W 0.015 5%

OARS1R015JLF
BI Technologies / TT Electronics
3,800: $0.502
Non-Stocked

Mfr. Part No.
OARS1R015JLF

Mouser Part No
66-OARS1R015JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.015 5%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.502

$0.487

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

15 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 .015 OHM 1W 5%

OARS1R015JTR-LF
BI Technologies / TT Electronics
3,800: $0.413
Non-Stocked

Mfr. Part No.
OARS1R015JTR-LF

Mouser Part No
66-OARS1R015JTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .015 OHM 1W 5%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.413

$0.386

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

15 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 2W 22 mOhms '1%

OARS1R022FLF
BI Technologies / TT Electronics
3,800: $0.573
Non-Stocked

Mfr. Part No.
OARS1R022FLF

Mouser Part No
66-OARS1R022FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 22 mOhms '1%

Datasheet

Non-Stocked

Cut Tape

$0.573

$0.556

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

2 W

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .022 OHM 1W 1%

OARS1R022FTR-LF
BI Technologies / TT Electronics
3,800: $0.436
Non-Stocked

Mfr. Part No.
OARS1R022FTR-LF

Mouser Part No
66-OARS1R022FTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .022 OHM 1W 1%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.436

$0.41

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

22 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 22 mOhms '5%

OARS1R022JLF
BI Technologies / TT Electronics
3,800: $0.537
Non-Stocked

Mfr. Part No.
OARS1R022JLF

Mouser Part No
66-OARS1R022JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 22 mOhms '5%

Datasheet

Non-Stocked

Cut Tape

$0.537

$0.521

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

2 W

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 2W 25 mOhms '5%

OARS1R025JLF
BI Technologies / TT Electronics
3,800: $0.537
Non-Stocked

Mfr. Part No.
OARS1R025JLF

Mouser Part No
66-OARS1R025JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 25 mOhms '5%

Datasheet

Non-Stocked

Cut Tape

$0.537

$0.521

Min.: 3,800
Mult.: 1,900

: 1,900

Reel

OARS

2 W

Metal Element

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .03 OHM 1W 1%

OARS1R030FTR-LF
BI Technologies / TT Electronics
1: $2.59
Non-Stocked Lead-Time 38 Weeks

Mfr. Part No.
OARS1R030FTR-LF

Mouser Part No
66-OARS1R030FTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .03 OHM 1W 1%

Learn More

Datasheet

Non-Stocked Lead-Time 38 Weeks

Cut Tape

$2.59

$1.49

$1.08

$0.798

View

Reel

$0.614

MouseReel Available

Min.: 1
Mult.: 1

: 1,900

Reel, Cut Tape, MouseReel

OARS

30 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

OARS Open Air Sense Resistors

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