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We offer current sense SMD resistors from 25µΩ to 3kΩ, with power ratings from 50mW to 50W. We also have 0Ω devices to be used as jumpers.

What are Current Sense SMD Resistors?

Current Sense Resistors are similar to normal resistors but with very low resistance ratings and high power ratings. These shunt resistors of known resistor value (R) are placed in a current conducting path so that the entire current (I) which is to be measured flows through them. By measuring the voltage drop (V) across the resistor and then using simple Ohm’s Law (I=V/R), we can calculate the amount of current that flows through the circuit.

Why use a current sense resistor?

Sensing the current flow is an important requirement in many power and general electronics applications. Often, current sensing is essential to monitor and control an application; for example, a battery charger circuit requires current sensing capability to correctly charge the battery and to determine the charge current needed from the driver.

How do I choose a current sense resistor?

The first step in selecting a current sense resistor is based on understanding the application, particularly in terms of its maximum input voltage. Also, as it will be passing a heavy current (because it is connected in series with the load) its I2R losses will likely be significant even if its resistance value is small. Therefore, a knowledge of its power rating is essential.

The next step is to know the tolerance and package required for the shunt resistor. Less than 1% tolerance is a good choice. But if the application demands extra accuracy, 0.5% to 0.1% tolerance shunt resistors may be more appropriate.

After choosing the value, power rating, and tolerance, it is important to select a suitable package that is easy to solder as well as with a lower footprint for smaller PCB areas. Try to select a resistor with a very low TCR value, ideally below 100 ppm/°C.

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Manufacturer Part No	Newark Part No.	Description / Manufacturer	Availability	Price for:	Price	Quantity	Resistance	Product Range	Resistor Case / Package	Power Rating	Resistance Tolerance	Resistor Element Type	Resistor Technology	Temperature Coefficient	Product Length	Product Width	Product Height	Operating Temperature Min	Operating Temperature Max	Qualification	Automotive Qualification Standard
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ERJ-1TRQFR47U	15R1357 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.47 ohm, ERJ1T Series, 2512 [6432 Metric], 1 W, ± 1%, Thick Film PANASONIC You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.953 25+ $0.631 50+ $0.566 100+ $0.501 250+ $0.458 500+ $0.415 1000+ $0.344 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.47ohm	ERJ1T Series	2512 [6432 Metric]	1W	± 1%	-	Thick Film	± 200ppm/°C	6.4mm	3.2mm	0.6mm	-55°C	155°C	AEC-Q200	-
RL1220S-R10-F	28K1608 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.1 ohm, RL Series, 0805 [2012 Metric], 250 mW, ± 1%, Thin Film SUSUMU You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.066 25+ $0.066 50+ $0.066 100+ $0.066 250+ $0.066 500+ $0.061 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.1ohm	RL Series	0805 [2012 Metric]	250mW	± 1%	-	Thin Film	0ppm/°C to +200ppm/°C	2.01mm	1.25mm	0.4mm	-55°C	125°C	-	-
WSL2512R1000FEA	98K3046 Data Sheet + RoHS	SMD Current Sense Resistors, AEC-Q200 WSL Series, 0.1 ohm, 1 W, - 1%, 310 mV RoHS Compliant: Yes VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $1.07 10+ $0.786 25+ $0.677 50+ $0.568 100+ $0.491	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	0.1ohm	WSL	2512 [6432 Metric]	1W	± 1%	-	Metal Strip	± 75ppm/°C	6.35mm	3.18mm	0.635mm	-65°C	170°C	AEC-Q200	-
ERJ8BWFR100V	08N2429 Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, ERJ8B Series, 1206 [3216 Metric], 1 W, ± 1%, Thick Film PANASONIC You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.96 25+ $0.808 50+ $0.683 100+ $0.556 250+ $0.552 500+ $0.547 1000+ $0.334 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.1ohm	ERJ8B Series	1206 [3216 Metric]	1W	± 1%	-	Thick Film	± 100ppm/°C	3.2mm	1.6mm	0.65mm	-55°C	155°C	AEC-Q200	-
WSL2512R2500FEA	26R4263 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.25 ohm, WSL Series, 2512 [6432 Metric], 1 W, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.64 10+ $0.64 25+ $0.64 50+ $0.587 100+ $0.587 250+ $0.542 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.25ohm	WSL Series	2512 [6432 Metric]	1W	± 1%	-	Metal Strip	± 75ppm/°C	6.35mm	3.18mm	0.635mm	-65°C	170°C	AEC-Q200	-

WSK2512R0250FEA	98K2976 Data Sheet + RoHS	SMD Current Sense Resistor, Power Metal Strip®, 0.025 ohm, WSK Series, 2512 [6432 Metric], 1 W VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.363 10+ $0.363 25+ $0.363 50+ $0.363 100+ $0.363 250+ $0.363 More Pricing...	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	0.025ohm	WSK Series	2512 [6432 Metric]	1W	± 1%	-	Metal Film	± 35ppm/°C	6.35mm	3.18mm	0.635mm	-65°C	170°C	AEC-Q200	-

CRA2512-FZ-R020ELF	14P5518 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.02 ohm, CR Series, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.385 25+ $0.353 50+ $0.325 100+ $0.325 250+ $0.303 500+ $0.282 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.02ohm	CR Series	2512 [6432 Metric]	3W	± 1%	-	Metal Film	± 75ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200	-

RL3720WT-R010-F	28K1735 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.01 ohm, RL Series, 1508 [3820 Metric], 1 W, ± 1%, Thin Film SUSUMU You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $1.11 25+ $0.814 50+ $0.645 100+ $0.476 250+ $0.413 500+ $0.337 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.01ohm	RL Series	1508 [3820 Metric]	1W	± 1%	-	Thin Film	0, +350ppm/°C	2mm	3.75mm	0.5mm	-55°C	125°C	-	-

CRA2512-FZ-R010ELF	14P5516 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.01 ohm, CR Series, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.385 25+ $0.352 50+ $0.352 100+ $0.326 250+ $0.303 500+ $0.282 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.01ohm	CR Series	2512 [6432 Metric]	3W	± 1%	-	Metal Film	± 75ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200	-

LRCS0402-1RFT5	61M7599 Data Sheet + RoHS	SMD Current Sense Resistors, LRCS Series, 1 ohm, 63 mW, - 1%, 0402 [1005 Metric] RoHS Compliant: Yes TT ELECTRONICS / WELWYN You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	10+ $0.404 25+ $0.359 50+ $0.223 100+ $0.182 250+ $0.156 500+ $0.128 1000+ $0.102 More Pricing...	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	1ohm	LRCS	0402 [1005 Metric]	63mW	± 1%	-	Metal Film	± 200ppm/°C	1.02mm	0.5mm	0.32mm	-55°C	155°C	-	-

ERJ14BSFR10U	63W0518 Data Sheet + RoHS	SMD Current Sense Resistors, AEC-Q200 ERJ Series, 0.1 ohm, 500 mW, - 1% RoHS Compliant: Yes PANASONIC You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	10+ $0.891 25+ $0.793 50+ $0.697 100+ $0.598 250+ $0.536	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.1ohm	ERJ14B	1210 [3225 Metric]	500mW	± 1%	-	Thick Film	± 200ppm/°C	3.2mm	2.5mm	0.6mm	-55°C	125°C	AEC-Q200	-

RL1632S-R050-F	28K1692 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.05 ohm, RL Series, 1206 [3216 Metric], 500 mW, ± 1%, Thin Film SUSUMU You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.139 25+ $0.139 50+ $0.139 100+ $0.139 250+ $0.139 500+ $0.139 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.05ohm	RL Series	1206 [3216 Metric]	500mW	± 1%	-	Thin Film	0ppm/°C to +200ppm/°C	3.2mm	1.6mm	0.5mm	-55°C	125°C	-	-

RL1220S-R20-F	28K1616 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.2 ohm, RL Series, 0805 [2012 Metric], 250 mW, ± 1%, Thin Film SUSUMU You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.44 25+ $0.266 50+ $0.196 100+ $0.127 250+ $0.11 500+ $0.092 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.2ohm	RL Series	0805 [2012 Metric]	250mW	± 1%	-	Thin Film	0ppm/°C to +200ppm/°C	2.01mm	1.25mm	0.4mm	-55°C	125°C	-	-

WSLP1206R0100FEA	84R1939 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.01 ohm, WSL Series, 1206 [3216 Metric], 1 W, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.979 25+ $0.654	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.01ohm	WSL Series	1206 [3216 Metric]	1W	± 1%	-	Metal Strip	± 75ppm/°C	3.2mm	1.6mm	0.635mm	-65°C	170°C	AEC-Q200	-

WSL2512R2500FEA	98K3049 Data Sheet Data Sheet + RoHS	SMD Current Sense Resistors, AEC-Q200 WSL Series, 0.25 ohm, 1 W, - 1%, 500 mV RoHS Compliant: Yes VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $1.29 10+ $1.15 25+ $0.962 50+ $0.898 100+ $0.833 250+ $0.704 More Pricing...	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	0.25ohm	WSL	2512 [6432 Metric]	1W	± 1%	-	Metal Strip	± 75ppm/°C	6.35mm	3.18mm	0.635mm	-65°C	170°C	AEC-Q200	-

WSL12061L000FEA	18X4707 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.001 ohm, WSL Series, 1206 [3216 Metric], 250 mW, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.479 25+ $0.479 50+ $0.479 100+ $0.479 250+ $0.479 500+ $0.479 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.001ohm	WSL Series	1206 [3216 Metric]	250mW	± 1%	-	Metal Strip	± 275ppm/°C	3.2mm	1.6mm	0.635mm	-65°C	170°C	AEC-Q200	-

LVM12FTR050E-TR	51AC1064 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.05 ohm, LVM Series, 1206 [3216 Metric], 500 mW, ± 1%, Metal Foil OHMITE You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.837 25+ $0.663 50+ $0.526 100+ $0.387 250+ $0.337 500+ $0.276 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.05ohm	LVM Series	1206 [3216 Metric]	500mW	± 1%	-	Metal Foil	± 100ppm/°C	3.2mm	1.6mm	0.55mm	-55°C	155°C	-	-

RL73H2AR22FTD	43AC4015 Data Sheet + RoHS Date/Lot Code	CURRENT SENSE RES, 0R22, 1%, 125 MW TE CONNECTIVITY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	10+ $0.521 25+ $0.458 50+ $0.35 100+ $0.239	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.22ohm	RL73	0805 [2012 Metric]	125mW	± 1%	-	Thick Film	± 100ppm/°C	2.01mm	1.25mm	0.55mm	-55°C	155°C	-	-

CSS2H-3920R-L200FE	67AC7862 Data Sheet + RoHS	CURRENT SENSE RES, 200 µOHM, 1%, 12 W BOURNS You previously purchased this product. View in Order History	View Additional Avnet Stock	Each	1+ $2.88 10+ $2.56 25+ $2.37 50+ $2.23 100+ $1.95 500+ $1.46 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	200µohm	CSS2H-3920	3921 [1052 Metric]	12W	± 1%	-	Metal Strip	± 50ppm/°C	10mm	5.2mm	2.5mm	-55°C	170°C	AEC-Q200	-

WSLF2512L5000FEA	08AJ1731 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 500 µohm, WSLF Series, 2512 [6432 Metric], 6 W, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.317 25+ $0.317 50+ $0.317 100+ $0.317 250+ $0.317 500+ $0.317 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	500µohm	WSLF Series	2512 [6432 Metric]	6W	± 1%	-	Metal Strip	± 200ppm/°C	6.35mm	3.02mm	0.35mm	-65°C	170°C	AEC-Q200	-

WSL2512R0100FEB	14AJ2833 Data Sheet + RoHS Date/Lot Code	RES, 0R01, 1W, 2512, METAL STRIP ROHS COMPLIANT: YES VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $2.02 10+ $1.51 25+ $1.45 50+ $1.39 100+ $1.34 250+ $1.16 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.01ohm	WSL	2512 [6432 Metric]	1W	± 1%	-	Metal Strip	± 75ppm/°C	6.35mm	3.18mm	0.635mm	-65°C	170°C	AEC-Q200	-

PA2512FKF7W0R003E	82AH7695 Data Sheet + RoHS Date/Lot Code	RES, AEC-Q200, 0R003, 1%, 2W, 2512 ROHS COMPLIANT: YES YAGEO You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	10+ $0.58 25+ $0.502 50+ $0.424 100+ $0.348	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.003ohm	PA_E Series	2512 [6432 Metric]	2W	± 1%	-	Metal Strip	± 100ppm/°C	6.35mm	3.18mm	0.63mm	-55°C	170°C	AEC-Q200	-

RCWE2512R500FKEA	14AJ2653 Data Sheet + RoHS	RES, 0R5, 2W, 2512, THICK FILM ROHS COMPLIANT: YES VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $1.04 10+ $0.764 25+ $0.702 50+ $0.64 100+ $0.579 250+ $0.516 More Pricing...	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	0.5ohm	RCWE	2512 [6432 Metric]	2W	± 1%	-	Thick Film	± 100ppm/°C	6.3mm	3.15mm	0.6mm	-55°C	155°C	AEC-Q200	-

RL0603FR-070R02L	82AH8696 Data Sheet + RoHS Date/Lot Code	RES, 0R02, 1%, 0.1W, 0603, THICK FILM ROHS COMPLIANT: YES YAGEO You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	10+ $0.201 25+ $0.167 50+ $0.132 100+ $0.099	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.02ohm	RL Series	0603 [1608 Metric]	100mW	± 1%	-	Thick Film	± 1500ppm/°C	1.6mm	0.85mm	0.45mm	-55°C	155°C	AEC-Q200	-

WSL1206R1000FEA18	08AJ1765 Data Sheet + RoHS Date/Lot Code	SMD Current Sense Resistor, 0.1 ohm, WSL-HP Series, 1206 [3216 Metric], 500 mW, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History		Each (Supplied on Cut Tape)	1+ $0.365 25+ $0.365 50+ $0.365 100+ $0.365 250+ $0.365 500+ $0.365 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.1ohm	WSL-HP Series	1206 [3216 Metric]	500mW	± 1%	-	Metal Strip	± 75ppm/°C	3.2mm	1.6mm	0.635mm	-65°C	170°C	AEC-Q200	-