Current Sense Resistors - SMD

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CFN-A Metal Foil Current Sensing Resistors

Bourns CFN-A resistors are metal foil resistors used primarily for current sensing applications. These resistors come in packages ranging from 0402 to 1206, and feature resistance ratings from 5mΩ to 40mΩ. Bourns CFN-A metal foil resistors come in both 5% and 1% tolerances. Applications for these current sensing resistors include power supplies, stepper motor drivers, and input amplifiers.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (EUR) Filter the results in the table by unit price based on your quantity.	Qty.	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
Current Sense Resistors - SMD .02 OHM 1% 1W 100PPM CFN1206AFX-R020ELF Bourns 1: €0.37 6,233In Stock	Mfr. Part No. CFN1206AFX-R020ELF Mouser Part No 652-CFN1206AFX-R020E	Bourns	Current Sense Resistors - SMD .02 OHM 1% 1W 100PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	6,233In Stock	Cut Tape €0.37 €0.235 €0.177 €0.158 Reel €0.094 View €0.137 €0.124 €0.113 €0.085 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	20 mOhms	1 W	1 %	100 PPM / C	1206	3216	3.2 mm (0.126 in)	1.6 mm (0.063 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD .04 OHM 1% 1W 100PPM CFN1206AFX-R040ELF Bourns 1: €0.396 179In Stock	Mfr. Part No. CFN1206AFX-R040ELF Mouser Part No 652-CFN1206AFX-R040E	Bourns	Current Sense Resistors - SMD .04 OHM 1% 1W 100PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	179In Stock	Cut Tape €0.396 €0.254 €0.191 €0.167 View Reel €0.095 €0.144 €0.125 €0.114 €0.095 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	40 mOhms	1 W	1 %	100 PPM / C	1206	3216	3.2 mm (0.126 in)	1.6 mm (0.063 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 1206 R020 5% 1W TCR100 CFN1206AJX-R020ELF Bourns 1: €0.516 1,613In Stock	Mfr. Part No. CFN1206AJX-R020ELF Mouser Part No 652-CFN1206AJX-R020E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 1206 R020 5% 1W TCR100 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	1,613In Stock	Cut Tape €0.516 €0.384 €0.299 €0.209 Reel €0.109 View €0.178 €0.162 €0.148 €0.101 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	20 mOhms	1 W	5 %	100 PPM / C	1206	3216	3.2 mm (0.126 in)	1.6 mm (0.063 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 1206 R040 5% 1W TCR100 CFN1206AJX-R040ELF Bourns 1: €0.421 4,000In Stock	Mfr. Part No. CFN1206AJX-R040ELF Mouser Part No 652-CFN1206AJX-R040E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 1206 R040 5% 1W TCR100 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	4,000In Stock	Cut Tape €0.421 €0.271 €0.205 €0.178 Reel €0.112 View €0.155 €0.14 €0.128 €0.101 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	40 mOhms	1 W	5 %	100 PPM / C	1206	3216	3.2 mm (0.126 in)	1.6 mm (0.063 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 1206 R005 5% 1W TCR50 CFN1206AJZ-R005ELF Bourns 1: €0.559 3,842In Stock	Mfr. Part No. CFN1206AJZ-R005ELF Mouser Part No 652-CFN1206AJZ-R005E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 1206 R005 5% 1W TCR50 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	3,842In Stock	Cut Tape €0.559 €0.402 €0.273 €0.194 Reel €0.115 View €0.162 €0.148 €0.128 €0.107 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	5 mOhms	1 W	5 %	50 PPM / C	1206	3216	3.2 mm (0.126 in)	1.6 mm (0.063 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 1206 R020 5% 1W TCR50 CFN1206AJZ-R020ELF Bourns 1: €0.43 3,789In Stock	Mfr. Part No. CFN1206AJZ-R020ELF Mouser Part No 652-CFN1206AJZ-R020E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 1206 R020 5% 1W TCR50 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	3,789In Stock	Cut Tape €0.43 €0.277 €0.209 €0.184 Reel €0.113 View €0.16 €0.146 €0.132 €0.104 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	20 mOhms	1 W	5 %	50 PPM / C	1206	3216	3.2 mm (0.126 in)	1.6 mm (0.063 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD .005 OHM 1% 1/2W 100PPM CFN0603AFX-R005ELF Bourns 1: €0.404 233In Stock	Mfr. Part No. CFN0603AFX-R005ELF Mouser Part No 652-FN0603AFXR005ELF	Bourns	Current Sense Resistors - SMD .005 OHM 1% 1/2W 100PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	233In Stock	Cut Tape €0.404 €0.26 €0.196 €0.164 Reel €0.094 View €0.14 €0.125 €0.112 €0.087	Min.: 1 Mult.: 1 : 5,000	Reel, Cut Tape	CFN-A	5 mOhms	500 mW (1/2 W)	1 %	100 PPM / C	0603	1608				- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD .02 OHM 1% 1/2W 50PPM CFN0603AFZ-R020ELF Bourns 1: €0.378 432In Stock	Mfr. Part No. CFN0603AFZ-R020ELF Mouser Part No 652-FN0603AFZR020ELF	Bourns	Current Sense Resistors - SMD .02 OHM 1% 1/2W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	432In Stock	Cut Tape €0.378 €0.24 €0.181 €0.162 Reel €0.094 View €0.14 €0.126 €0.114 €0.087	Min.: 1 Mult.: 1 : 5,000	Reel, Cut Tape	CFN-A					0603	1608							2 Terminal
Current Sense Resistors - SMD .005 OHM 1% 3/4W 100PPM CFN0805AFX-R005ELF Bourns 1: €0.473 3,629In Stock	Mfr. Part No. CFN0805AFX-R005ELF Mouser Part No 652-FN0805AFXR005ELF	Bourns	Current Sense Resistors - SMD .005 OHM 1% 3/4W 100PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	3,629In Stock	Cut Tape €0.473 €0.351 €0.277 €0.194 Reel €0.101 View €0.168 €0.151 €0.129 €0.094	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape	CFN-A					0805	2012							2 Terminal
Current Sense Resistors - SMD .01 OHM 1% 3/4W 50PPM CFN0805AFZ-R010ELF Bourns 1: €0.361 665In Stock 8,000Expected 13/01/2027	Mfr. Part No. CFN0805AFZ-R010ELF Mouser Part No 652-FN0805AFZR010ELF	Bourns	Current Sense Resistors - SMD .01 OHM 1% 3/4W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	665In Stock 8,000Expected 13/01/2027	Cut Tape €0.361 €0.23 €0.173 €0.154 Reel €0.092 View €0.132 €0.118 €0.106 €0.083 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A					0805	2012							2 Terminal
Current Sense Resistors - SMD .02 OHM 1% 3/4W 50PPM CFN0805AFZ-R020ELF Bourns 1: €0.37 3,821In Stock	Mfr. Part No. CFN0805AFZ-R020ELF Mouser Part No 652-FN0805AFZR020ELF	Bourns	Current Sense Resistors - SMD .02 OHM 1% 3/4W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	3,821In Stock	Cut Tape €0.37 €0.234 €0.176 €0.157 Reel €0.092 View €0.133 €0.118 €0.108 €0.083	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape	CFN-A					0805	2012							2 Terminal
Current Sense Resistors - SMD .03 OHM 1% 3/4W 50PPM CFN0805AFZ-R030ELF Bourns 1: €0.37 4,734In Stock	Mfr. Part No. CFN0805AFZ-R030ELF Mouser Part No 652-FN0805AFZR030ELF	Bourns	Current Sense Resistors - SMD .03 OHM 1% 3/4W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	4,734In Stock	Cut Tape €0.37 €0.239 €0.18 €0.147 Reel €0.095 View €0.127 €0.114 €0.104 €0.083	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape	CFN-A					0805	2012							2 Terminal
Current Sense Resistors - SMD .005 OHM 1% 1W 100PPM CFN1206AFX-R005ELF Bourns 1: €0.37 5,441In Stock 4,000Expected 08/01/2027	Mfr. Part No. CFN1206AFX-R005ELF Mouser Part No 652-FN1206AFXR005ELF	Bourns	Current Sense Resistors - SMD .005 OHM 1% 1W 100PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	5,441In Stock 4,000Expected 08/01/2027	Cut Tape €0.37 €0.236 €0.177 €0.151 Reel €0.098 View €0.128 €0.118 €0.108 €0.085	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape	CFN-A	5 mOhms	1 W	1 %	100 PPM / C	1206	3216				- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD .02 OHM 1% 1W 50PPM CFN1206AFZ-R020ELF Bourns 1: €0.413 7,434In Stock	Mfr. Part No. CFN1206AFZ-R020ELF Mouser Part No 652-FN1206AFZR020ELF	Bourns	Current Sense Resistors - SMD .02 OHM 1% 1W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	7,434In Stock	Cut Tape €0.413 €0.331 €0.263 €0.173 Reel €0.098 View €0.149 €0.13 €0.111 €0.085 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A					1206	3115							2 Terminal
Current Sense Resistors - SMD .04 OHM 1% 1W 50PPM CFN1206AFZ-R040ELF Bourns 1: €0.37 5,132In Stock	Mfr. Part No. CFN1206AFZ-R040ELF Mouser Part No 652-FN1206AFZR040ELF	Bourns	Current Sense Resistors - SMD .04 OHM 1% 1W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	5,132In Stock	Cut Tape €0.37 €0.235 €0.177 €0.152 Reel €0.098 View €0.132 €0.122 €0.111 €0.085	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape	CFN-A	40 mOhms	1 W	1 %	50 PPM / C	1206	3216				- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD .01 OHM 1% 1/2W 50PPM CFN0603AFZ-R010ELF Bourns 1: €0.404 8,657Expected 21/10/2026	Mfr. Part No. CFN0603AFZ-R010ELF Mouser Part No 652-FN0603AFZR010ELF	Bourns	Current Sense Resistors - SMD .01 OHM 1% 1/2W 50PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	8,657Expected 21/10/2026	Cut Tape €0.404 €0.26 €0.196 €0.171 Reel €0.095 View €0.148 €0.128 €0.117 €0.089 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	Reel, Cut Tape, MouseReel	CFN-A	10 mOhms	500 mW (1/2 W)	1 %	50 PPM / C	0603	1608				- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD .02 OHM 1% 1/4W 100PPM CFN0402AFX-R020ELF Bourns 10,000: €0.165 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0402AFX-R020ELF Mouser Part No 652-CFN0402AFX-R020E	Bourns	Current Sense Resistors - SMD .02 OHM 1% 1/4W 100PPM Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Reel €0.165	Min.: 10,000 Mult.: 10,000 : 10,000	Reel	CFN-A	20 mOhms	200 mW (1/5 W)	1 %	100 PPM / C	0402	1005	1.1 mm (0.043 in)	0.55 mm (0.022 in)	0.45 mm (0.018 in)	- 55 C	+ 125 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0402 R01 5% 0.25W TCR100 CFN0402AJX-R010ELF Bourns 10,000: €0.164 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0402AJX-R010ELF Mouser Part No 652-CFN0402AJX-R010E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0402 R01 5% 0.25W TCR100 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Reel €0.164	Min.: 10,000 Mult.: 10,000 : 10,000	Reel	CFN-A	10 mOhms	200 mW (1/5 W)	5 %	100 PPM / C	0402	1005	1.1 mm (0.043 in)	0.55 mm (0.022 in)	0.45 mm (0.018 in)	- 55 C	+ 125 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0402 R02 5% 0.25W TCR100 CFN0402AJX-R020ELF Bourns 10,000: €0.164 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0402AJX-R020ELF Mouser Part No 652-CFN0402AJX-R020E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0402 R02 5% 0.25W TCR100 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Reel €0.164	Min.: 10,000 Mult.: 10,000 : 10,000	Reel	CFN-A	20 mOhms	200 mW (1/5 W)	5 %	100 PPM / C	0402	1005	1.1 mm (0.043 in)	0.55 mm (0.022 in)	0.45 mm (0.018 in)	- 55 C	+ 125 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0603 R010 5% 0.5W TCR100 CFN0603AJX-R010ELF Bourns 1: €0.361 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0603AJX-R010ELF Mouser Part No 652-CFN0603AJX-R010E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0603 R010 5% 0.5W TCR100 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape €0.361 €0.229 €0.172 €0.154 Reel €0.089 View €0.133 €0.12 €0.109 €0.083 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	Reel, Cut Tape, MouseReel	CFN-A	10 mOhms	500 mW (1/2 W)	5 %	100 PPM / C	0603	1508	1.6 mm (0.063 in)	0.8 mm (0.031 in)	0.6 mm (0.024 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0603 R005 5% 0.5W TCR50 CFN0603AJZ-R005ELF Bourns 1: €0.464 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0603AJZ-R005ELF Mouser Part No 652-CFN0603AJZ-R005E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0603 R005 5% 0.5W TCR50 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape €0.464 €0.384 €0.307 €0.209 Reel €0.098 View €0.176 €0.151 €0.123 €0.089 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	Reel, Cut Tape, MouseReel	CFN-A	5 mOhms	500 mW (1/2 W)	5 %	50 PPM / C	0603	1508	1.6 mm (0.063 in)	0.8 mm (0.031 in)	0.6 mm (0.024 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0603 R020 5% 0.5W TCR50 CFN0603AJZ-R020ELF Bourns 1: €0.507 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0603AJZ-R020ELF Mouser Part No 652-CFN0603AJZ-R020E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0603 R020 5% 0.5W TCR50 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape €0.507 €0.429 €0.286 €0.169 Reel €0.096 View €0.144 €0.125 €0.108 €0.089 MouseReel Available	Min.: 1 Mult.: 1 : 5,000	Reel, Cut Tape, MouseReel	CFN-A	20 mOhms	500 mW (1/2 W)	5 %	50 PPM / C	0603	1508	1.6 mm (0.063 in)	0.8 mm (0.031 in)	0.6 mm (0.024 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0805 R005 5% 0.75W TCR10 CFN0805AJX-R005ELF Bourns 1: €0.439 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0805AJX-R005ELF Mouser Part No 652-CFN0805AJX-R005E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0805 R005 5% 0.75W TCR10 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape €0.439 €0.359 €0.293 €0.202 Reel €0.083 View €0.163 €0.139 €0.114 €0.077 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	5 mOhms	750 mW (3/4 W)	5 %	100 PPM / C	0805	2012	2 mm (0.079 in)	1.25 mm (0.049 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0805 R005 5% 0.75W TCR50 CFN0805AJZ-R005ELF Bourns 1: €0.482 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0805AJZ-R005ELF Mouser Part No 652-CFN0805AJZ-R005E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0805 R005 5% 0.75W TCR50 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape €0.482 €0.402 €0.267 €0.159 Reel €0.09 View €0.134 €0.118 €0.102 €0.082 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	5 mOhms	750 mW (3/4 W)	5 %	50 PPM / C	0805	2012	2 mm (0.079 in)	1.25 mm (0.049 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT
Current Sense Resistors - SMD ResMetalFoil A 0805 R010 5% 0.75W TCR50 CFN0805AJZ-R010ELF Bourns 1: €0.353 Non-Stocked Lead-Time 14 Weeks	Mfr. Part No. CFN0805AJZ-R010ELF Mouser Part No 652-CFN0805AJZ-R010E	Bourns	Current Sense Resistors - SMD ResMetalFoil A 0805 R010 5% 0.75W TCR50 Learn More about Bourns cfn a current sensing chip resistors	Datasheet	Non-Stocked Lead-Time 14 Weeks	Cut Tape €0.353 €0.226 €0.17 €0.151 Reel €0.09 View €0.131 €0.115 €0.104 €0.082 MouseReel Available	Min.: 1 Mult.: 1 : 4,000	Reel, Cut Tape, MouseReel	CFN-A	10 mOhms	750 mW (3/4 W)	5 %	50 PPM / C	0805	2012	2 mm (0.079 in)	1.25 mm (0.049 in)	0.7 mm (0.028 in)	- 55 C	+ 155 C	Metal Foil	2 Terminal	SMD/SMT

CFN-A Metal Foil Current Sensing Resistors

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