Raleigh, N.C. Stackpole Electronics Inc. has introduced a new current sense chip resistor capable of handling 3 watts of power at 70°C in a 1225 case size.
Designated the CSR3 series, these resistors feature resistance values from 0.002 Ω to 0.200 Ω, in tolerances to ±1%. The resistor series offers a temperature coefficient of resistance (TCR) of ±200 ppm/°C and demonstrates an inductance of less than 0.2 nH (measured at 1 GHZ). The operating temperature range is -55°C to 150°C.
The new series is manufactured with a bottom side, 4-pad termination to allow for a Kelvin connection. It's fully compatible with automated assembly equipment, and wave or reflow soldering methods. Applications include portable electronic devices, disk drives, power supplies, automotive systems and instrumentation.
"The wide terminations on the long side of the CSR3 allow engineers to run wider copper traces, thereby reducing solder joint resistance and increasing current carrying capacity at lower temperatures," said Rob Hudspeth, director of sales and marketing for Stackpole, in a statement. "The CSR3 provides designers a new alternative in reliable, ultra-low resistance and high current resistor options."
The CSR3 is typically priced at $0.25 in quantities of 5,000. Delivery is three to six weeks.
Stackpole Electronics Inc., 1-919-850-9500, www.seielect.com