CSI Current Sense Resistors

Bourns CSI Current Sense Resistors feature an electron-beam (EB) welded metal strip, low resistance, low temperature coefficient of resistance (TCR), and excellent long-term stability. These high-power modules offer a resistance range of <0.1mΩ to 3.5mΩ with ±1% to ±5% resistance tolerance and up to a 15W power rating in four package sizes: 2512, 3920, 4026, and 5930. The 2512 series size also offers low thermal electromotive force (EMF). Bourns CSI Current Sense Resistors are halogen free, RoHS compliant, and operate in a -55°C to +170°C temperature range. Typical applications include current sensing, voltage division, power modules, frequency converters, and industrial.

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Qty. RoHS ECAD Model Packaging
Series
Resistance
Power Rating
Tolerance
Temperature Coefficient
Case Code - in
Case Code - mm
Length
Width
Height
Minimum Operating Temperature
Maximum Operating Temperature
Technology
Termination
Termination Style
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 3L0 1%
Datasheet
5,498In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 3 mOhms 4 W 1 % 75 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 0.81 mm (0.032 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 3L5 1%
Datasheet
5,354In Stock
6,000Expected 10/2/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 3.5 mOhms 4 W 1 % 75 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 0.81 mm (0.032 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 1L0 5%
Datasheet
5,367In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 1 mOhms 5 W 5 % 75 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 0.78 mm (0.031 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 4026 3L0 1%
Datasheet
2,931In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Reel, Cut Tape, MouseReel CSI 3 mOhms 1 % 4026 10166 10.06 mm (0.396 in) 6.6 mm (0.26 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L30 2%
Datasheet
8,893In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 300 uOhms 10 W 2 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.82 mm (0.072 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L50 5%
Datasheet
2,999In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 500 uOhms 9 W 5 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.29 mm (0.051 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 2L5 5%
Datasheet
2,918In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 2.5 mOhms 5 W 5 % 75 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.04 mm (0.041 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 3L0 5%
Datasheet
2,631In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 3 mOhms 5 W 5 % 75 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 0.99 mm (0.039 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L70 5%
Datasheet
2,971In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 700 uOhms 8 W 5 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.05 mm (0.041 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 2L3 5%
Datasheet
2,967In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 2.3 mOhms 5 W 5 % 75 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 1.09 mm (0.043 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 L30 5%
Datasheet
5,995Expected 10/1/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 300 uOhms 6 W 5 % 150 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 1.65 mm (0.065 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 L50 1%
Datasheet
6,000Expected 9/17/2026
MouseReel Available
Min.: 1
Mult.: 1
: 3,000

Reel, Cut Tape, MouseReel CSI 500 uOhms 6 W 1 % 100 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 1.21 mm (0.048 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 5930 L50 1%
Datasheet
2,194Expected 10/21/2026
MouseReel Available
Min.: 1
Mult.: 1
: 1,500

Reel, Cut Tape, MouseReel CSI 500 uOhms 8 W 1 % 100 PPM / C 5930 15078 15 mm (0.591 in) 7.75 mm (0.305 in) 1.01 mm (0.04 in) - 55 C + 170 C Metal Strip 2 Terminal
Bourns Current Sense Resistors - SMD CurrentSenseResistor 5930 1L0 2%
Datasheet
Non-Stocked Lead-Time 9 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 500

Reel, Cut Tape, MouseReel CSI 1 mOhms 9 W 1 % 75 PPM / C 5930 15078 15 mm (0.591 in) 7.75 mm (0.305 in) 1.41 mm (0.056 in) - 55 C + 170 C Metal Strip 2 Terminal
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 2L0 2%
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Reel, Cut Tape, MouseReel CSI 2 mOhms 5 W 2 % 75 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 1.09 mm (0.043 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 2512 L50 2%
Datasheet
Non-Stocked Lead-Time 15 Weeks
MouseReel Available
Min.: 1
Mult.: 1
: 1,000

Reel, Cut Tape, MouseReel CSI 500 uOhms 6 W 1 % 100 PPM / C 2512 6330 6.35 mm (0.25 in) 3.05 mm (0.12 in) 1.21 mm (0.048 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 2L0 2%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 2 mOhms 6 W 2 % 75 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.17 mm (0.046 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 2L0 5%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 2 mOhms 6 W 5 % 75 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.17 mm (0.046 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 3L0 2%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 3 mOhms 5 W 2 % 75 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 0.99 mm (0.039 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 1L0 2%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 1 mOhms 8 W 2 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 0.93 mm (0.037 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 1L0 5%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 1 mOhms 8 W 5 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 0.93 mm (0.037 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L20 2%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 200 uOhms 12 W 2 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 2.51 mm (0.099 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L20 5%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 200 uOhms 12 W 5 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 2.51 mm (0.099 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L30 5%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 300 uOhms 10 W 5 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.82 mm (0.072 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT
Bourns Current Sense Resistors - SMD CurrentSenseResistor 3920 L50 2%
Datasheet
Non-Stocked Lead-Time 9 Weeks
Min.: 6,000
Mult.: 3,000
: 3,000

Reel CSI 500 uOhms 9 W 2 % 100 PPM / C 3920 1052 10 mm (0.394 in) 5.2 mm (0.205 in) 1.29 mm (0.051 in) - 55 C + 170 C Metal Strip 2 Terminal SMD/SMT