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.

Results: 77
Select Image Part # Mfr. Description Datasheet Availability Pricing (USD) Filter the results in the table by unit price based on your quantity. 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 .025 OHM 1% 2,944In Stock
2,400Expected 2026/11/26
Cut Tape
$2.28
$1.52
$1.17
$1.07
Reel
$0.722
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 0.02 ohm 1% 2W Sense Resistor 3,753In Stock
Cut Tape
$1.94
$1.12
$0.913
$0.683
Reel
$0.42
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 2W 40 mOhms '1% 3,852In Stock
Cut Tape
$1.95
$1.13
$0.914
$0.713
Reel
$0.486
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .015 OHM 1% 95In Stock
3,800Expected 2027/02/26
Cut Tape
$1.95
$1.13
$0.914
$0.684
Reel
$0.493
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .020 OHM 1% 25In Stock
2,400Expected 2027/01/08
Cut Tape
$2.61
$1.54
$1.33
$1.10
Reel
$0.872
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 3W 0.010 ohm 1% 42In Stock
Cut Tape
$2.44
$1.49
$1.37
$1.08
Reel
$0.792
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 2W 1% 1,800In Stock
1,900Expected 2027/02/12
Cut Tape
$1.94
$1.12
$0.913
$0.683
Reel
$0.529
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 ZERO OHM 205In Stock
Cut Tape
$1.65
$0.966
$0.868
$0.684
Reel
$0.502
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 3W 0.015 ohm 1% 55In Stock
3,800Expected 2027/04/16
Cut Tape
$1.43
$1.37
$1.19
$0.778
Reel
$0.778
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 1W 0.01 5% 2,629In Stock
Cut Tape
$1.83
$1.06
$0.857
$0.641
Reel
$0.456
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .040 OHM 5% 1,439In Stock
Cut Tape
$1.83
$1.06
$0.857
$0.641
Reel
$0.456
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 0.03 ohm 1% 2W Sense Resistor 3,444In Stock
Cut Tape
$1.95
$1.13
$0.914
$0.684
Reel
$0.486
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 3W 0.003 ohm 1% 1,598In Stock
Cut Tape
$1.43
$1.34
$1.28
$1.08
Reel
$0.652
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 0.005 1% 13,021In Stock
Cut Tape
$1.63
$1.08
$0.829
$0.69
Reel
$0.69
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 3W 0.002 ohm 5% 6,455In Stock
Cut Tape
$2.34
$1.43
$1.31
$1.07
Reel
$0.757
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .005 OHM 1% 3,726In Stock
2,400Expected 2026/10/15
Cut Tape
$2.84
$1.87
$1.50
$1.29
Reel
$0.997
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 0.015 ohm 1% 2W Sense Resistor 4In Stock
3,800Expected 2026/12/02
Cut Tape
$1.95
$1.13
$0.914
$0.684
Reel
$0.48
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 1W 0.003 1% 1,834In Stock
Cut Tape
$1.63
$0.994
$0.829
$0.714
Reel
$0.486
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 0.02 Ohms 1% 6In Stock
22,800On Order
Cut Tape
$1.72
$1.04
$0.826
$0.668
Reel
$0.635
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 2W 25 mOhms '1% 1,341In Stock
9,500Expected 2027/03/12
Cut Tape
$1.72
$1.04
$0.826
$0.668
Reel
$0.48
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 0.05 OHM 1% 4In Stock
17,100On Order
Cut Tape
$1.77
$1.07
$0.852
$0.698
Reel
$0.48
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
BI Technologies / TT Electronics Current Sense Resistors - SMD 3W 0.005 ohm 1% 3,798In Stock
Cut Tape
$2.40
$1.54
$1.29
$1.08
Reel
$0.792
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .001 OHM 1% 1,424In Stock
Cut Tape
$2.58
$1.73
$1.35
$1.22
Reel
$0.83
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .002 OHM 1% 872In Stock
2,400Expected 2027/01/08
Cut Tape
$2.58
$1.73
$1.35
$1.22
Reel
$0.816
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
BI Technologies / TT Electronics Current Sense Resistors - SMD .010 OHM 1% 67In Stock
6,000Expected 2027/02/19
Cut Tape
$2.61
$1.58
$1.33
$1.10
Reel
$0.884
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