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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Qty. RoHS ECAD Model Packaging
Series
Resistance
Power Rating
Tolerance
Temperature Coefficient
Length
Width
Height
Minimum Operating Temperature
Maximum Operating Temperature
Technology
Termination
Termination Style
Qualification
BI Technologies / TT Electronics Current Sense Resistors - SMD .003 OHM 5%
Datasheet
383In Stock
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .040 OHM 5%
Datasheet
1.514In Stock
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 1%
Datasheet
5.169Expected 25/09/2026
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 30 mOhms '1%
Datasheet
3.648Expected 11/12/2026
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 3W 0.004 ohm 1%
Datasheet
2.800Expected 02/10/2026
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 3W 0.010 ohm 1%
Datasheet
3.792Expected 25/09/2026
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .0025 OHM 1%
Datasheet
4.507On Order
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .020 OHM 1%
Datasheet
2.400Expected 18/02/2027
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .025 OHM 1%
Datasheet
987In Stock
4.800On Order
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 0.01 ohm 1% 2W Sense Resistor
Datasheet
5.666On Order
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 0.02 ohm 1% 2W Sense Resistor
Datasheet
3.800Expected 02/10/2026
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 0.005 ohm 1% 2W Sense Resistor
Datasheet
2.083On Order
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 0.002 Ohms 1%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 2 mOhms '5%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 1W 0.004 1%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 4 mOhms '5%
Datasheet
Non-Stocked
Min.: 3.800
Mult.: 1.900
: 1.900

Reel OARS 2 W 2 Terminal SMD/SMT AEC-Q200
BI Technologies / TT Electronics Current Sense Resistors - SMD .005 OHM 1W 5%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .01 OHM 1W 5%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 1W 0.015 5%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .015 OHM 1W 5%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 22 mOhms '1%
Datasheet
Non-Stocked
Min.: 3.800
Mult.: 1.900
: 1.900

Reel OARS 2 W 2 Terminal SMD/SMT AEC-Q200
BI Technologies / TT Electronics Current Sense Resistors - SMD .022 OHM 1W 1%
Datasheet
Non-Stocked
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 22 mOhms '5%
Datasheet
Non-Stocked
Min.: 3.800
Mult.: 1.900
: 1.900

Reel OARS 2 W 2 Terminal SMD/SMT AEC-Q200
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 25 mOhms '5%
Datasheet
Non-Stocked
Min.: 3.800
Mult.: 1.900
: 1.900

Reel OARS 2 W Metal Element 2 Terminal SMD/SMT AEC-Q200
BI Technologies / TT Electronics Current Sense Resistors - SMD .03 OHM 1W 1%
Datasheet
Non-Stocked Lead-Time 38 Weeks
Min.: 3.800
Mult.: 1.900
: 1.900

Reel 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