Microhm today introduces a new Automotive Grade metal strip current sensing chip resistor NFC series featuring 0.5 W to 3 W power ratings in 0805- and 4527-sized packages.
 
Aimed at current sensing and pulse applications in mobile electronic equipment-cellular phone, tablet PC, GPS, DSC, HDD, DC-DC converter, adapter, battery pack and charger, switching power supply and voltage regulation module.
 
The new NFC resistors allow designers to use a single high power resistor instead of running multiple resistors in parallel, which can cause current measurement errors. By thus improving power density, the NFC series additionally promotes space savings on the circuit board that will in turn enable smaller and lighter products for the end consumer. It maintain the superior electrical characteristics of the power metal plate construction. A proprietary processing technique enables a wide range of low resistance values from 1 mΩ to 250 mΩ, with tolerances down to ± 1.0 %.
 
The devices are ideal for all types of current sensing and pulse applications in automotive electronic controls, brushless DC motor controls, battery management for electric and hybrid vehicles; high power inverter / converter controls and large motor drives for industrial applications; power supplies for downhole instrumentation; inverter control for consumer appliances and HVAC systems; and power management, conversion, and safety in servers and other computing applications.

 
The resistors feature a solid metal manganese-copper or nickel-chromium alloy resistive element with an operating temperature range of -60 °C to +160 °Cl, low TCR (< 30 ppm/°C), able to withstand high power, ultra low sensing resistance, excellent frequency response and AEC-Q200 qualified.