Applications such as industrial and automotive power control require low resistance values, high power ratings, and resistance to sulfur contamination. Thick film chip resistors are not typically sulfur resistant, especially in higher power ratings, and many high-power resistor series do not offer values below 1 ohm. Stackpole’s CSRT-AS series offers low resistance values, anti-sulfur performance, […]
Resistors
Power shunt resistors come in pint-sized 0508 package
Rohm Semiconductor announces the LTR10L series of wide terminal shunt resistors, optimized for a variety of applications in the automotive, industrial, and consumer sectors. ROHM has also strengthened their considerable lineup with two updated general-purpose MCR series shunt resistors (MCR10L and MCR18L). In recent years, high-efficiency operation has been required from the viewpoint of energy conservation – not […]
High-power shunt resistors feature metal sensing pins for accurate high-current measurement
Bourns, Inc. announced an extension to its Model CSM2F Series power shunt resistor portfolio with 12 new series. This new series feature riveted through-hole metal sensing pins meeting the growing need for accurate positioning of voltage sense points in high current applications. These latest additions to the Bourns Model CSM2F Series shunt resistor family are engineered using […]
Foil-on-ceramic sense resistors feature resistance values to 0.1 milliohm
Current sensing for a wide range of products and applications requires both low and high resistance values with high stability, reliability, and low TCR. For devices that need somewhat higher resistance values, high current handling, low TCR, and high stability, finding cost-effective solutions can be challenging. Film-type resistors will not have high current handling, and […]
HIgh-power resistors feature low TCR, pulse-load capability
Bourns, Inc. introduced its new high-power resistor series that features a robust metal strip resistive element offering excellent pulse load capability and low-Temperature Coefficient of Resistance (TCR). These capabilities in the Bourns Model CRG2512 Series help increase resistor reliability making them optimal inrush current limiting solutions for capacitors, hot swaps, and snubber circuits in a broad […]
High-current SMD shunt resistors sport 0.1 milliohm resistance
Modern electric power systems continue to push the power envelope. Power electronics for electric vehicles often use a high-power low resistance shunt resistor which can be expensive and difficult to find. Stackpole’s HCS high current SMD shunt resistors are now available in a 0.1 milliohm resistance value in a 10W, 5930 chip size. The HCS has an […]
Current-sense shunt resistor offers 0.5 milliohm resistance, 3-W power rating
High-efficiency current sensing requires low resistance values. However, lead resistance may cause inaccuracies in sensing measurement for ultra-low resistance values. Four terminal Kelvin connections with separate sense and current flow connections eliminate the detrimental effects of lead resistance yielding a very accurate measurement of the power delivered. Stackpole’s CSSK3637 is a four-terminal device offering resistance […]
High-power sense resistors feature high temperature stability
For current sensing applications requiring high efficiency, low resistance values are required. Typically, high power sense resistors are very large and have TCR in the 200 to 400 ppm range. Stackpole’s HCSM2818 is rated at 5 watts and now provides a 2 milliohm resistance value with a TCR of 100 ppm. This ensures the HCSM2818 is stable at […]
Current-sensing 0.2 milliohm resistors handle 3 W
High-efficiency current sensing requires low resistance values. Values less than 1 milliohm can be difficult to find and typically have high TCR. Stackpole recently added a 0.2 milliohm resistance value to its CSNL2512-3W series. The CSNL2512-3W handles 3 watts of power while providing TCR from ±50 ppm for a 1 and 2 milliohm to ±175 […]
Four-terminal current-sense shunt resistors sport improved TCR
Current sensing resistors must balance the efficiency requirements of low resistance values, and high current handling with the precision and accuracy requirements of the sensing circuit. But the key requirement of most current sensing circuits is stable performance over temperature. Component TCR is the key measurement parameter for the temperature stability of a resistor. Stackpole […]
