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CURRENT SENSE RESISTORS
N1517
October, 2015
Select Bourns® Current Sense Resistors are Qualifi ed for
AEC-Q200 Automotive Applications
Select Bourns® power metal strip current sense resistors are now AEC-Q200 qualifi ed for automotive
applications. These SMT chips have a low temperature coeffi cient to help ensure a stable operating
accuracy over wide temperature ranges.
Current sense resistors are growing in popularity due to their high measurement accuracy and
relatively low cost compared to other technologies. These resistors detect and convert current to an
easily measured voltage which is proportional to the current through the device.
For higher current measurement accuracy Bourns offers 2-terminal resistors that can be used with
additional current sensing trace on the PCB as well as 4-terminal resistors. The current sense resistors
complement the other circuit conditioning components offered by Bourns such as power inductors,
rectifi er diodes and zener diodes.
Series Size Rated Power Resistance Range Temperature Coeffi cient
CRA 2512 3 W 10 to 100 miliohms ±75 ppm/°C
CRE 2512 2 W/3 W 1 to 9 milliohms ±75 ppm/°C
CRF 0805/1206/2512 0.5 W/1 W/2 W 1 to 50 milliohms ±75/±100/±275 ppm/°C
CST 0612 – 4 terminal 1 W 0.5 to 2 milliohms ±100/±200 ppm/°C
Features
■ Operating temperature ranges from
-55 °C to +170 °C
■ Mn/Cu or Ni/Cu alloy resistor
■ Inductance less than 5 nH
■ AEC-Q200 quali ed, automotive grade
■ RoHS compliant*
Applications
■ Automotive
■ Power supplies
■ Stepper motor drives
■ Battery packs
■ White goods
*RoHS Directive 2002/95/EC Jan. 27, 2003 including annex and RoHS Recast 2011/65/EU June 8, 2011.
