RESI

Description

Description

The Current Sensing Resistors are used to measure the current in the circuit. By measuring the voltage drop generated when the current flowing through the resistor and known resistance, current can be calculated by Ohm’s Law (I = U / R). Generally, the resistance of current sensing resistor is very small, between 1m Ω and 1 Ω, with tight tolerance and low TCR. In applications which ask for precision measurement, the resistance of terminal and the contact resistance may be higher than the nominal value of current sensing resistor itself. Therefore, if two-terminal resistors are used, the error caused by terminals may be serious. In order to eliminate the influence of voltage drop caused by terminals (not resistive element) and obtain extremely accurate current value, four-terminal Kelvin structure resistor is recommended.

Features

Low Resistance
Four Terminal Design
Low TCR
Low Thermal EMF
Excellent Stability

Applications

Electric Power
Precision Measurement
Current Sensing
Automotive

Series	Description	Resistance Range	Size	Rated Power	Tolerance	TCR	Technology
PCSR2512	Low TCR, tight tolerance and high stability molded alloy current sensing resistor	5mΩ-100mΩ	2512	1W	±0.1%	±15ppm	Alloy
EBWM2512	Economical electron beam welding alloy current sensing resistor, case code 2512	0.3mΩ-1mΩ	2512	6W	±0.5%	±200ppm	Mn-Cu Alloy
SEWF2512	Low-TCR & tight-tolerance alloy current sensing resistor, for DC measuring	3mΩ	2512	4W	±0.5%	±25ppm	Alloy
PEWM3920	Low TCR, tight tolerance and high stability alloy current sensing resistor	0.3mΩ-1mΩ	3920	8W-10W	±0.5%	±100ppm	Alloy
PEWK3920	Low TCR, tight tolerance and high stability alloy current sensing resistor	2mΩ-5mΩ	3920	3W-6W	±0.5%	±50ppm	Alloy
EBWK2512	Economical Kama alloy current sensing resistor, case code 2512, 100ppm	2mΩ-5mΩ	2512	2.5W-5W	±0.5%	±100ppm	Alloy
SEWF3920	Low-TCR & tight-tolerance alloy current sensing resistor, for DC measuring	1mΩ-5mΩ	3920	3W-8W	±0.5%	±25ppm	Alloy
PEWF2512	Alloy current sensing resistor by Trimming Free technology, size 2512, tightest tolerance 0.5%, 50ppm	2mΩ-5mΩ	2512	2.5W-5W	±0.5%	±50ppm	Alloy
SEWF5930	Low-TCR & tight-tolerance alloy current sensing resistor, for DC measuring	1mΩ-3mΩ	5930	6W-10W	±0.5%	±25ppm	Alloy
PCSK2512	Low TCR, tight tolerance and high stability molded alloy current sensing resistor	5mΩ-100mΩ	2512	1W	±0.5%	±25ppm	Alloy
PEWM5930	Low-TCR & tight-tolerance alloy current sensing resistor, for DC measuring	0.2mΩ-1mΩ	5930	7W-15W	±0.5%	±100ppm	Alloy
EOAR	Trimming Free Technology. Low TCR. Tight-Tolerance Alloy Current Sensing Resistor	25mΩ	4725	5W	±0.5%	±40ppm	Alloy
SEWF3951	Low-TCR & tight-tolerance alloy current sensing resistor, for DC measuring	0.25mΩ-0.8mΩ	3951	10W-15W	±0.5%	±25ppm	Alloy
MFCR	The precision SMD current sensing resistors use special thin film technology, which offer two options, short side and long side terminals, and comply with AEC-Q200 certification.	10mΩ-10Ω	0201-2512	0.2W-3W	±0.25%	±50ppm-±150ppm	Thin Film
PEWK5930	Low TCR, tight tolerance and high stability alloy current sensing resistor	1mΩ	5930	10W	±0.5%	±50ppm	Alloy
PEWF2726	2726 size, 4-terminal construction, Low-TCR & tight-tolerance alloy current sensing resistor, based on Trimming-Free technology	1mΩ-5mΩ	2726	3W-7W	±0.5%	±50ppm-±75ppm	Alloy
PEWF4026	4026 size, 4-terminal construction, Low-TCR & tight-tolerance alloy current sensing resistor, based on Trimming-Free technology	1mΩ-5mΩ	4026	3W-7W	±0.5%	±50ppm-±75ppm	Alloy
SEWK3951	High power, low TCR and tight tolerance alloy current sensing resistor	0.25mΩ-0.4mΩ	3951	15W	±0.5%	±25ppm	Alloy
MCSF2512	High-Precision Low-TCR Molded Alloy Current Sensing Resistor	3mΩ~100mΩ	2512	2-3W	±0.5%	±50ppm	Alloy