Raleigh, N.C. Stackpole Electronics, Inc. has released its CSS/CSSH series of ultra-stable, metal element current sense resistors. This series uses unique manufacturing processes and a special resistive alloy to provide tight tolerances, low
temperature coefficient of resistance (TCR) values, and high power ratings. These improvements provide design engineers with more accurate control of their power systems, and the ability to downsize their designs or lower board temperatures, said Stackpole.
The CSS/CSSH series is available in package sizes from 1206 to 2728 and power ratings from 0.5 to 4 watts. As examples, the series offers a 3-watt 2512 size chip and a 4-watt device in a 2725 or 2728 package depending on resistance value. 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, said Stackpole.
The all-metal construction eliminates the issue of part or solder joint cracking, which might normally be a concern for larger chip sizes, said Stackpole. The devices are RoHS compliant.
Pricing: Varies with size and tolerance, but typically ranges from $0.50 to
$0.70 each in full reel quantities.
Availability: The CSS/CSSH series is available in standard 7-inch reels. Common values in the 4-watt size are available at Digi-Key.
Stackpole Electronics, Inc., 1-919-850-9500, www.seielect.com