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 .003 OHM 5%

OARS1R003JLF
BI Technologies / TT Electronics
1: $2.70
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

$2.70

$1.58

$1.42

$1.25

Reel

$0.809

View

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 0.015 ohm 1% 2W Sense Resistor

OARS1-R015FI
BI Technologies / TT Electronics
1: $3.02
3,759Expected 2026-04-14

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

3,759Expected 2026-04-14

Cut Tape

$3.02

$1.75

$1.42

$1.06

View

Reel

$0.744

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 2W 0.005 1%

OARS1R005FLF
BI Technologies / TT Electronics
1: $2.39
14,597On Order

Mfr. Part #
OARS1R005FLF

Mouser Part #
66-OARS1R005FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 0.005 1%

Learn More

Datasheet

14,597On Order

Cut Tape

$2.39

$1.58

$1.21

$0.865

View

Reel

$0.756

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 0.010 ohm 1%

OARS3R010FLF
BI Technologies / TT Electronics
1: $3.78
3,792Expected 2026-08-28

Mfr. Part #
OARS3R010FLF

Mouser Part #
66-OARS3R010FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.010 ohm 1%

Learn More

Datasheet

3,792Expected 2026-08-28

Cut Tape

$3.78

$1.67

$1.60

$1.43

$0.99

Reel

$0.99

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 .001 OHM 1%

OARSXPR001FLF
BI Technologies / TT Electronics
1: $4.14
2,305Expected 2026-04-15

Mfr. Part #
OARSXPR001FLF

Mouser Part #
66-OARSXPR001FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .001 OHM 1%

Learn More

Datasheet

2,305Expected 2026-04-15

Cut Tape

$4.14

$2.68

$2.09

$1.89

$1.72

Reel

$1.29

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 .020 OHM 1%

OARSXPR020FLF
BI Technologies / TT Electronics
1: $4.05
2,400Expected 2026-09-29

Mfr. Part #
OARSXPR020FLF

Mouser Part #
66-OARSXPR020FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .020 OHM 1%

Learn More

Datasheet

2,400Expected 2026-09-29

Cut Tape

$4.05

$2.39

$2.09

$2.05

$1.98

Reel

$1.33

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 .025 OHM 1%

OARSXPR025FLF
BI Technologies / TT Electronics
1: $3.84
3,517Expected 2026-08-28

Mfr. Part #
OARSXPR025FLF

Mouser Part #
66-OARSXPR025FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .025 OHM 1%

Learn More

Datasheet

3,517Expected 2026-08-28

Cut Tape

$3.84

$2.56

$2.00

$1.95

View

Reel

$1.10

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 0.01 ohm 1% 2W Sense Resistor

OARS1-R010FI
BI Technologies / TT Electronics
1: $3.02
3,766Expected 2026-09-11

Mfr. Part #
OARS1-R010FI

Mouser Part #
756-OARS1-R010FI

BI Technologies / TT Electronics

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

Datasheet

3,766Expected 2026-09-11

Cut Tape

$3.02

$1.75

$1.42

$1.06

View

Reel

$0.753

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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: $2.88
3,795Expected 2026-07-03

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

3,795Expected 2026-07-03

Cut Tape

$2.88

$1.66

$1.35

$1.01

View

Reel

$0.707

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 2W 0.02 Ohms 1%

OARS1R020FLF
BI Technologies / TT Electronics
1: $2.29
3,403Expected 2026-03-20

Mfr. Part #
OARS1R020FLF

Mouser Part #
66-OARS1R020FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 0.02 Ohms 1%

Learn More

Datasheet

3,403Expected 2026-03-20

Cut Tape

$2.29

$1.44

$1.11

$1.00

View

Reel

$0.693

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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 1W 0.02 5%

OARS1R020JLF
BI Technologies / TT Electronics
1: $2.84
1,400In Stock

Mfr. Part #
OARS1R020JLF

Mouser Part #
66-OARS1R020JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.02 5%

Learn More

Datasheet

1,400In Stock

Cut Tape

$2.84

$1.64

$1.33

$0.994

View

Reel

$0.612

MouseReel Available

Min.: 1
Mult.: 1

Reel: 1,900

Reel, Cut Tape, MouseReel

OARS

Metal Element

SMD/SMT

AEC-Q200

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

OARS1-R005FI
BI Technologies / TT Electronics
1: $2.84
2,803Expected 2026-03-23

Mfr. Part #
OARS1-R005FI

Mouser Part #
756-OARS1-R005FI

BI Technologies / TT Electronics

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

Datasheet

2,803Expected 2026-03-23

Cut Tape

$2.84

$1.67

$1.49

$0.915

View

Reel

$0.767

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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: $0.862
Non-Stocked

Mfr. Part #
OARS1R002FLF

Mouser Part #
66-OARS1R002FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 0.002 Ohms 1%

Datasheet

Non-Stocked

Cut Tape

$0.862

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

Reel: 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: $0.651
Non-Stocked

Mfr. Part #
OARS1R002JLF

Mouser Part #
66-OARS1R002JLF

BI Technologies / TT Electronics

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

Datasheet

Non-Stocked

Cut Tape

$0.651

$0.649

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

Reel: 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: $0.738
Non-Stocked

Mfr. Part #
OARS1R004FLF

Mouser Part #
66-OARS1R004FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.004 1%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.738

$0.719

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

Reel: 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: $0.701
Non-Stocked

Mfr. Part #
OARS1R004JLF

Mouser Part #
66-OARS1R004JLF

BI Technologies / TT Electronics

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

Datasheet

Non-Stocked

Cut Tape

$0.701

$0.684

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

Reel: 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: $0.536
Non-Stocked

Mfr. Part #
OARS1R005JTR-LF

Mouser Part #
66-OARS1R005JTR-LF

BI Technologies / TT Electronics

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

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.536

$0.507

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

Reel: 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: $0.46
Non-Stocked

Mfr. Part #
OARS1R010JTR-LF

Mouser Part #
66-OARS1R010JTR-LF

BI Technologies / TT Electronics

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

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.46

$0.431

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

Reel: 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: $0.584
Non-Stocked

Mfr. Part #
OARS1R015JLF

Mouser Part #
66-OARS1R015JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.015 5%

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.584

$0.563

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

Reel: 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: $0.46
Non-Stocked

Mfr. Part #
OARS1R015JTR-LF

Mouser Part #
66-OARS1R015JTR-LF

BI Technologies / TT Electronics

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

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.46

$0.431

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

Reel: 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: $0.639
Non-Stocked

Mfr. Part #
OARS1R022FLF

Mouser Part #
66-OARS1R022FLF

BI Technologies / TT Electronics

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

Datasheet

Non-Stocked

Cut Tape

$0.639

$0.62

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

Reel: 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: $0.487
Non-Stocked

Mfr. Part #
OARS1R022FTR-LF

Mouser Part #
66-OARS1R022FTR-LF

BI Technologies / TT Electronics

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

Learn More

Datasheet

Non-Stocked

Cut Tape

$0.487

$0.457

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

Reel: 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: $0.598
Non-Stocked

Mfr. Part #
OARS1R022JLF

Mouser Part #
66-OARS1R022JLF

BI Technologies / TT Electronics

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

Datasheet

Non-Stocked

Cut Tape

$0.598

$0.581

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

Reel: 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: $0.598
Non-Stocked

Mfr. Part #
OARS1R025JLF

Mouser Part #
66-OARS1R025JLF

BI Technologies / TT Electronics

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

Datasheet

Non-Stocked

Cut Tape

$0.598

$0.581

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

Reel: 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: $2.88
Non-Stocked Lead-Time 30 Weeks

Mfr. Part #
OARS1R030FTR-LF

Mouser Part #
66-OARS1R030FTR-LF

BI Technologies / TT Electronics

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

Learn More

Datasheet

Non-Stocked Lead-Time 30 Weeks

Cut Tape

$2.88

$1.66

$1.20

$0.89

View

Reel

$0.685

MouseReel Available

Min.: 1
Mult.: 1

Reel: 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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