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Current Sense Resistors

Current sense resistors are utilized in numerous applications in our industry today. There has been a significant increase in usage in the electronics industry, due to the growth in portable battery powered devices to minimize energy use and various safety system applications. When designing these types of applications, current sense resistors aim to eliminate the risk of short circuits or surge current conditions which are likely to damage other components. In most cases, current sense resistors offer relatively easy design and low cost solutions for circuit designers. Our engineers have created a Cheat Sheet to better explain and demonstrate the function of current sense resistors.


Comparison Matrix: Venkel Current Sense Resistors


       Current Sense Metal Foil Resistor  Current Sense Metal Strip Resistor

Series

 Low Value (LCR) Ultra Low Value (ULCR)  Metal Foil (CSMF) Metal Strip (CSMS)
 Datasheet PDF (650kB)pdficon_small  PDF (960kB)pdficon_small PDF (650kB)pdficon_small  PDF (650kB)pdficon_small
TCR ±100ppm to ±450ppm
±50ppm to ±100ppm
±50ppm to ±100ppm

 ±75ppm to ±200ppm


Size

0402 to 2512
2512
0603 to 2512
0805 to 2512

Wattage

1/8W (0.125W) to 2W
1W
1/8W (0.125W) to 1W
1/8W (0.125W) to 2W

Resistance

10mΩ to 100mΩ
0.5mΩ to 10mΩ 10mΩ to 100mΩ 1mΩ to 100mΩ

Tolerance

±1% to ±5%
±1% to ±5%
±1% to ±5%
±1% to ±5%
 Operating Temp. Range
-55°C to +155°C
-55°C to +170°C  -55°C to +155°C

-55°C to +170°C
 
Structure
Alumina
Alloy Metal Plate
Alumina
Alloy Metal Plate 
 
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