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 2W 1%

OARS1R010FLF
BI Technologies / TT Electronics
1: Rp35.591
3.800Expected 12/02/2027

Mfr. Part No.
OARS1R010FLF

Mouser Part No
66-OARS1R010FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 2W 1%

Learn More

Datasheet

3.800Expected 12/02/2027

Cut Tape

Rp35.591

Rp20.548

Rp16.750

Rp12.530

Reel

Rp8.898

View

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 .01 OHM 1W 1%

OARS1R010FTR-LF
BI Technologies / TT Electronics
1: Rp35.775
13.228On Order

Mfr. Part No.
OARS1R010FTR-LF

Mouser Part No
66-OARS1R010FTR-LF

BI Technologies / TT Electronics

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

Learn More

Datasheet

13.228On Order

Cut Tape

Rp35.775

Rp20.731

Rp16.768

Rp12.549

View

Reel

Rp8.806

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

2 Terminal

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD .025 OHM 1W 1%

OARS1R025FTR-LF
BI Technologies / TT Electronics
1: Rp35.775
3.755Expected 26/02/2027

Mfr. Part No.
OARS1R025FTR-LF

Mouser Part No
66-OARS1R025FTR-LF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .025 OHM 1W 1%

Learn More

Datasheet

3.755Expected 26/02/2027

Cut Tape

Rp35.775

Rp20.731

Rp16.768

Rp12.549

View

Reel

Rp8.806

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

2 Terminal

SMD/SMT

AEC-Q200

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

OARS1R030FLF
BI Technologies / TT Electronics
1: Rp26.235
3.648Expected 24/09/2026

Mfr. Part No.
OARS1R030FLF

Mouser Part No
66-OARS1R030FLF

BI Technologies / TT Electronics

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

Datasheet

3.648Expected 24/09/2026

Cut Tape

Rp26.235

Rp17.796

Rp15.667

Rp14.310

Rp8.806

Reel

Rp8.806

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 0.015 ohm 1%

OARS3R015FLF
BI Technologies / TT Electronics
1: Rp26.235
3.910On Order

Mfr. Part No.
OARS3R015FLF

Mouser Part No
66-OARS3R015FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 3W 0.015 ohm 1%

Learn More

Datasheet

3.910On Order

Cut Tape

Rp26.235

Rp25.134

Rp21.832

Rp14.530

Reel

Rp14.530

MouseReel Available

Min.: 1
Mult.: 1

: 1.900

Reel, Cut Tape, MouseReel

OARS

15 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 .0025 OHM 1%

OARSXPR0025FLF
BI Technologies / TT Electronics
1: Rp55.772
3.987On Order

Mfr. Part No.
OARSXPR0025FLF

Mouser Part No
66-OARSXPR0025FLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .0025 OHM 1%

Learn More

Datasheet

3.987On Order

Cut Tape

Rp55.772

Rp37.793

Rp28.620

Rp26.602

View

Reel

Rp18.291

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: Rp47.883
2.400Expected 08/01/2027

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 08/01/2027

Cut Tape

Rp47.883

Rp45.865

Reel

Rp15.723

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 0.005 ohm 1% 2W Sense Resistor

OARS1-R005FI
IRC / TT Electronics
1: Rp33.573
3.300On Order

Mfr. Part No.
OARS1-R005FI

Mouser Part No
756-OARS1-R005FI

IRC / TT Electronics

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

Datasheet

3.300On Order

Cut Tape

Rp33.573

Rp19.814

Rp17.649

Rp10.824

View

Reel

Rp9.081

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 0.01 ohm 1% 2W Sense Resistor

OARS1-R010FI
BI Technologies / TT Electronics
1: Rp35.775
3.550Expected 11/12/2026

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

3.550Expected 11/12/2026

Cut Tape

Rp35.775

Rp20.731

Rp16.768

Rp12.549

View

Reel

Rp8.806

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 3W 0.004 ohm 1%

OARS3R004FLF
BI Technologies / TT Electronics
1: Rp44.764
900Expected 02/10/2026

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

900Expected 02/10/2026

Cut Tape

Rp44.764

Rp27.336

Rp25.134

Rp19.814

View

Reel

Rp11.888

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 1W 0.02 5%

OARS1R020JLF
BI Technologies / TT Electronics
1: Rp33.573
1.900Stock Available

Mfr. Part No.
OARS1R020JLF

Mouser Part No
66-OARS1R020JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD 1W 0.02 5%

Learn More

Datasheet

1.900Stock Available

More Info Available

Cut Tape

Rp33.573

Rp19.447

Rp15.723

Rp11.760

View

Reel

Rp8.256

MouseReel Available

Min.: 1
Mult.: 1

: 1.900

Reel, Cut Tape, MouseReel

OARS

Metal Element

SMD/SMT

AEC-Q200

Current Sense Resistors - SMD 2W 0.002 Ohms 1%

OARS1R002FLF
BI Technologies / TT Electronics
3.800: Rp9.430
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

Rp9.430

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: Rp9.687
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

Rp9.687

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: Rp8.219
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

Rp8.219

Rp8.109

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: Rp7.797
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

Rp7.797

Rp7.705

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: Rp6.348
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

Rp6.348

Rp5.999

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: Rp5.449
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

Rp5.449

Rp5.100

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: Rp6.623
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

Rp6.623

Rp6.421

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: Rp5.449
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

Rp5.449

Rp5.100

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: Rp7.559
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

Rp7.559

Rp7.338

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: Rp5.761
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

Rp5.761

Rp5.412

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: Rp7.082
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

Rp7.082

Rp6.880

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: Rp7.082
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

Rp7.082

Rp6.880

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: Rp34.124
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

Rp34.124

Rp19.630

Rp14.236

Rp10.531

View

Reel

Rp8.109

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

Current Sense Resistors - SMD .030 OHM 5%

OARS1R030JLF
BI Technologies / TT Electronics
3.800: Rp6.623
Non-Stocked

Mfr. Part No.
OARS1R030JLF

Mouser Part No
66-OARS1R030JLF

BI Technologies / TT Electronics

Current Sense Resistors - SMD .030 OHM 5%

Learn More

Datasheet

Non-Stocked

Cut Tape

Rp6.623

Rp6.513

Min.: 3.800
Mult.: 1.900

: 1.900

Reel

OARS

30 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

OARS Open Air Sense Resistors

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