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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	Order Code	Description / Manufacturer	Price For	Price	Quantity	Resistance	Product Range	Resistor Case / Package	Power Rating	Resistance Tolerance	Resistor Technology	Temperature Coefficient	Product Length	Product Width	Product Height	Operating Temperature Min	Operating Temperature Max	Qualification
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ERJ8BWFR100V	1577547 Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, ERJ8BW, 1206 [3216 Metric], 1 W, ± 1%, Thick Film PANASONIC You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1577547 1577547RL in Re-reel	10+ RM2.48 100+ RM1.68 250+ RM1.49 500+ RM1.21 1000+ RM0.975	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.1ohm	ERJ8BW	1206 [3216 Metric]	1W	± 1%	Thick Film	± 100ppm/°C	3.2mm	1.6mm	0.65mm	-55°C	155°C	AEC-Q200
ERJ8CWFR010V	2145283 Data Sheet + RoHS	SMD Current Sense Resistor, 0.01 ohm, ERJ8CW, 1206 [3216 Metric], 1 W, ± 1%, Thick Film PANASONIC You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2145283 2145283RL in Re-reel 2692845 in Full Reel	10+ RM2.46 100+ RM1.03 1000+ RM0.571 2500+ RM0.535	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.01ohm	ERJ8CW	1206 [3216 Metric]	1W	± 1%	Thick Film	± 75ppm/°C	3.2mm	1.6mm	0.65mm	-55°C	125°C	AEC-Q200
CRM2512-FX-R100ELF	1865265 Data Sheet Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, CRM, 2512 [6432 Metric], 2 W, ± 1%, Thick Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1865265 1865265RL in Re-reel	10+ RM2.12 25+ RM1.91	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.1ohm	CRM	2512 [6432 Metric]	2W	± 1%	Thick Film	± 100ppm/°C	6.3mm	3.1mm	0.6mm	-55°C	155°C	-
CRA2512-FZ-R010ELF	1435947 Data Sheet + RoHS	SMD Current Sense Resistor, 0.01 ohm, CR, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1435947 1435947RL in Re-reel 2691930 in Full Reel	10+ RM1.75 100+ RM1.17 250+ RM1.04	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.01ohm	CR	2512 [6432 Metric]	3W	± 1%	Metal Film	± 50ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200
CRA2512-FZ-R100ELF	1435952 Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, CR, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1435952 1435952RL in Re-reel	10+ RM1.48 100+ RM1.15 250+ RM1.09	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.1ohm	CR	2512 [6432 Metric]	3W	± 1%	Metal Film	± 50ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200

CRA2512-FZ-R020ELF	1435948 Data Sheet + RoHS	SMD Current Sense Resistor, 0.02 ohm, CR, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1435948 1435948RL in Re-reel 2691931 in Full Reel	10+ RM1.49 100+ RM1.10	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.02ohm	CR	2512 [6432 Metric]	3W	± 1%	Metal Film	± 50ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200

CRA2512-FZ-R050ELF	1435950 Data Sheet + RoHS	SMD Current Sense Resistor, 0.05 ohm, CR, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1435950 1435950RL in Re-reel	10+ RM1.43 100+ RM1.09	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	-	-	-	3W	-	Metal Film	-	6.4mm	3.2mm	0.7mm	-55°C	-	AEC-Q200

CRM2512-FX-R100ELF	1865265RL Data Sheet Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, CRM, 2512 [6432 Metric], 2 W, ± 1%, Thick Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:1865265RL 1865265 in Cut Tape	25+ RM1.91	Restricted Item Minimum order of 100 items Multiples of 10 only Please enter a valid quantity Add Min: 100 Mult: 10	0.1ohm	CRM	2512 [6432 Metric]	2W	± 1%	Thick Film	± 100ppm/°C	6.3mm	3.1mm	0.6mm	-55°C	155°C	-

CRM2512-FX-R200ELF	2309096 Data Sheet + RoHS	SMD Current Sense Resistor, 0.2 ohm, CRM, 2512 [6432 Metric], 2 W, ± 1%, Thick Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	10+ RM2.39 25+ RM2.16	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.2ohm	CRM	2512 [6432 Metric]	2W	± 1%	Thick Film	± 100ppm/°C	6.3mm	3.1mm	0.6mm	-55°C	155°C	-

ERJ-8CWJR025V	3593118 + RoHS	CURRENT SENSE RESISTOR, 0.025OHM, 1W, 5% PANASONIC You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ RM2.39 10+ RM1.87 100+ RM0.88 500+ RM0.651 1000+ RM0.498 2500+ RM0.47 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.025ohm	AEC-Q200 ERJ8CW Series	1206 [3216 Metric]	1W	± 5%	Thick Film	± 50ppm/°C	3.2mm	1.6mm	0.65mm	-55°C	125°C	AEC-Q200

ERJ3RSFR10V	1717759 Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, ERJ3R, 0603 [1608 Metric], 100 mW, ± 1%, Thick Film PANASONIC You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1717759 1717759RL in Re-reel	10+ RM0.765 100+ RM0.34 500+ RM0.259 1000+ RM0.242	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.1ohm	ERJ3R	0603 [1608 Metric]	100mW	± 1%	Thick Film	± 300ppm/°C	1.6mm	0.85mm	0.45mm	-55°C	125°C	AEC-Q200

LRCS0805-0R5FT5	1506145 Data Sheet + RoHS	SMD Current Sense Resistor, 0.5 ohm, LRCS, 0805 [2012 Metric], 250 mW, ± 1%, Metal Film TT ELECTRONICS / WELWYN You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1506145 1506145RL in Re-reel	10+ RM0.492 100+ RM0.36 500+ RM0.284 1000+ RM0.253 2500+ RM0.231	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.5ohm	LRCS	0805 [2012 Metric]	250mW	± 1%	Metal Film	± 300ppm/°C	2.01mm	1.25mm	0.55mm	-55°C	155°C	-

WSHP2818R0100FEB	2709461 Data Sheet + RoHS	SMD Current Sense Resistor, 0.01 ohm, WSHP2818, 2818 [7146 Metric], 10 W, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2709461 2709448 in Full Reel	1+ RM7.64 10+ RM6.79 25+ RM6.26 50+ RM5.69 100+ RM4.93 250+ RM4.14 500+ RM3.89 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	WSHP2818	2818 [7146 Metric]	10W	± 1%	Metal Strip	± 75ppm/°C	7.1mm	4.6mm	1.5mm	-65°C	170°C	AEC-Q200

WSL36376L000FEA	3618291 + RoHS	RES, 0R006, 3W, 3637, METAL STRIP VISHAY You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ RM7.70 10+ RM6.84 25+ RM6.26 50+ RM5.73 100+ RM4.93 250+ RM4.46 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.006ohm	WSL3637 Series	3637 [9194 Metric]	3W	± 1%	Metal Strip	± 50ppm/°C	9.14mm	9.4mm	0.635mm	-65°C	170°C	AEC-Q200

ULR3-R001FT2	1292506 Data Sheet + RoHS	SMD Current Sense Resistor, 0.001 ohm, ULR, 2512 [6432 Metric], 3 W, ± 1%, Metal Strip TT ELECTRONICS / WELWYN You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1292506 1292506RL in Re-reel 2693557 in Full Reel	5+ RM4.13 25+ RM3.55 100+ RM3.00 250+ RM2.84	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	-	-	-	3W	-	Metal Strip	-	6.35mm	3mm	0.6mm	-55°C	-	AEC-Q200

ERJ8RQF1R0V	1717852 Data Sheet + RoHS	SMD Current Sense Resistor, 1 ohm, ERJ8RQ, 1206 [3216 Metric], 250 mW, ± 1%, Thick Film PANASONIC You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1717852 1717852RL in Re-reel	10+ RM1.50 100+ RM0.589 500+ RM0.354 1000+ RM0.301	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	1ohm	ERJ8RQ	1206 [3216 Metric]	250mW	± 1%	Thick Film	± 200ppm/°C	3.2mm	1.6mm	0.6mm	-55°C	125°C	AEC-Q200

CRM2512-JW-2R2ELF	1865269RL Data Sheet Data Sheet + RoHS	SMD Current Sense Resistor, 2.2 ohm, CRM, 2512 [6432 Metric], 2 W, ± 5%, Thick Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:1865269RL 1865269 in Cut Tape 2691953 in Full Reel	100+ RM1.03 250+ RM0.877 500+ RM0.717 1000+ RM0.647	Restricted Item Minimum order of 100 items Multiples of 10 only Please enter a valid quantity Add Min: 100 Mult: 10	2.2ohm	CRM	2512 [6432 Metric]	2W	± 5%	Thick Film	± 200ppm/°C	6.3mm	3.1mm	0.6mm	-55°C	155°C	-

PA2512FKF070R004E	3496972 Data Sheet + RoHS	SMD Current Sense Resistor, 0.004 ohm, PA_E Series, 2512 [6432 Metric], 1 W, ± 1%, Metal Strip YAGEO You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	10+ RM1.47 100+ RM1.20 250+ RM1.05 500+ RM0.852 1000+ RM0.75	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.004ohm	PA_E Series	2512 [6432 Metric]	1W	± 1%	Metal Strip	± 100ppm/°C	6.35mm	3.18mm	0.63mm	-55°C	170°C	AEC-Q200

CRA2512-FZ-R100ELF	1435952RL Data Sheet + RoHS	SMD Current Sense Resistor, 0.1 ohm, CR, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Re-reel Packaging Options Suggested replacement for:1435952RL 1435952 in Cut Tape	100+ RM1.15 250+ RM1.09	Restricted Item Minimum order of 100 items Multiples of 1 only Please enter a valid quantity Add Min: 100 Mult: 1	0.1ohm	CR	2512 [6432 Metric]	3W	± 1%	Metal Film	± 50ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200

ULR2-R008FT2	1292494 Data Sheet + RoHS	SMD Current Sense Resistor, 0.008 ohm, ULR, 2512 [6432 Metric], 2 W, ± 1%, Metal Strip TT ELECTRONICS / WELWYN You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1292494 1292494RL in Re-reel	5+ RM3.74 25+ RM3.09 100+ RM2.72 250+ RM2.60 500+ RM2.36 1000+ RM2.07 More Pricing...	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	0.008ohm	ULR	2512 [6432 Metric]	2W	± 1%	Metal Strip	± 50ppm/°C	6.35mm	3mm	0.6mm	-55°C	170°C	AEC-Q200

ULR1S-R005FT2	1621969 Data Sheet + RoHS	SMD Current Sense Resistor, 0.005 ohm, ULR, 1206 [3216 Metric], 1 W, ± 1%, Metal Strip TT ELECTRONICS / WELWYN You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1621969 1621969RL in Re-reel	5+ RM3.21 25+ RM2.75 100+ RM2.27 250+ RM2.18 500+ RM2.02	Restricted Item Minimum order of 5 items Multiples of 5 only Please enter a valid quantity Add Min: 5 Mult: 5	0.005ohm	ULR	1206 [3216 Metric]	1W	± 1%	Metal Strip	± 50ppm/°C	3.2mm	1.6mm	0.6mm	-55°C	170°C	AEC-Q200

ERJ1TRQJR33U	2324366 Data Sheet + RoHS	SMD Current Sense Resistor, 0.33 ohm, ERJ1TR, 2512 [6432 Metric], 1 W, ± 5%, Thick Film PANASONIC You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:2324366 2324366RL in Re-reel	10+ RM1.88 100+ RM1.56 250+ RM1.35 500+ RM1.10 1000+ RM0.956	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.33ohm	ERJ1TR	2512 [6432 Metric]	1W	± 5%	Thick Film	± 200ppm/°C	6.4mm	3.2mm	0.6mm	-55°C	155°C	AEC-Q200

WSLP1206R0250FEA	3597043 Data Sheet + RoHS	SMD Current Sense Resistor, 0.025 ohm, WSLP, 1206 [3216 Metric], 1 W, ± 1%, Metal Strip VISHAY You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	10+ RM3.51 100+ RM2.59 250+ RM2.25 500+ RM1.87 1000+ RM1.60	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.025ohm	WSLP	1206 [3216 Metric]	1W	± 1%	Metal Strip	± 75ppm/°C	3.2mm	1.6mm	0.635mm	-65°C	170°C	AEC-Q200

CRA2512-FZ-R040ELF	1435949 Data Sheet + RoHS	SMD Current Sense Resistor, 0.04 ohm, CR, 2512 [6432 Metric], 3 W, ± 1%, Metal Film BOURNS You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape Packaging Options Suggested replacement for:1435949 1435949RL in Re-reel	10+ RM1.48 100+ RM1.09	Restricted Item Minimum order of 10 items Multiples of 10 only Please enter a valid quantity Add Min: 10 Mult: 10	0.04ohm	CR	2512 [6432 Metric]	3W	± 1%	Metal Film	± 50ppm/°C	6.4mm	3.2mm	0.7mm	-55°C	170°C	AEC-Q200

KRL3216T4A-M-R002-G-T1	3289895 Data Sheet + RoHS	RES, 0R002, 1W, 1206W, METAL FOIL SUSUMU You previously purchased this product. View in Order History	Each (Supplied on Cut Tape) Cut Tape	1+ RM4.65 10+ RM4.14 25+ RM3.80 50+ RM3.48 100+ RM3.01 250+ RM2.55 500+ RM2.14 More Pricing...	Restricted Item Minimum order of 1 items Multiples of 1 only Please enter a valid quantity Add Min: 1 Mult: 1	0.002ohm	KRL Series	1206 Wide	1W	± 2%	Metal Foil	± 75ppm/°C	1.6mm	3.2mm	0.5mm	-55°C	155°C	AEC-Q200