VPG Foil Resistors Announces Ultra-High Precision Military and Space Grade Resistors for High-Performance Current Sensing within Mission-Critical Applications.
July 5, 2017 - Malvern, Pa – The VPG Foil Resistors product group of Vishay Precision Group (NYSE: VPG) (www.vpgfoilresistors.com), manufacturers of the industry’s most precise and stable precision resistors, today introduced the Model 303337 ultra-high precision military and space-grade resistor, offering high-performance current sensing within mission-critical applications.
The Model 303337 produces a highly precise voltage that is directly proportional to measured current levels, with significantly reduced component sensitivity to applied power changes, including PCR and thermal resistance values. The industry-exclusive design of the Model 303337 incorporates VPG’s own proprietary Bulk Metal® Z Foil resistive technology, along with a four-terminal Kelvin connection, for ultra-high precision current sensing and temperature stability to 3W. Additional attributes include a low temperature coefficient of resistance (TCR) of ±5 ppm/°C (–55°C to +125°C, at +25°C ref.), for reduced risk of measurement errors due to temperature changes; improved load-life stability of ±0.02% (typ.), at +70°C for 2000 hours (rated power); a low power coefficient of resistance (PCR) of 5 ppm/W at rated power; a resistance tolerance to ±0.1%; a 100 to 200 mΩ resistance range; a short-time overload of 0.005% typical; an electrostatic discharge (ESD) limit of < 25 kV; solderable terminations; and a choice of either lead (Pb)-free or tin/lead alloy solder finish.