CSS/CSSH Series Resistors

Stackpole Electronics' CSS/CSSH series of ultra-stable metal element current sense resistors are designed for high stability and precision at high temperatures and under heavy load. Recent expansion now offers sizes including 0201, 0402, 0508, 0603, 0805, 1206, 2010, 2512, 2725, 2728, and 4527. The all-metal construction eliminates problems with part or solder-joint cracking, which are often a concern for larger chip sizes. This series is capable of resistance tolerances down to 0.5% and TCRs down to 15 PPM. This ensures precise power management over a wide range of ambient temperatures. The all metal construction allows the CSS/CSSH to flex with the PCB in response to thermal stresses where a ceramic based current sense chip resistors may crack or have cracked solder joints.

The CSS/CSSH series is designed for high current, high power, high temperature, and high precision current sensing requirements. The metal plate element and unique trimming process yields a highly stable device at high currents and is capable of operation at full rated power up to +100°C. The CSS/CSSH series allows operation up to temperatures of +225°C and up to +275°C with proper precautions. In addition, market drivers for 1 W and higher current sense resistors continue to push for lower resistance values. The CSS/CSSH series is available in resistance values down to 0.25 mΩ.

The CSS/CSSH is an ideal choice for current sensing in power supplies, motor controls, high power regulators, robotics, industrial controls, gasoline and diesel engine controllers, UPS systems, network diagnostic equipment, medical equipment, and rechargeable power tools.