Kanata, Canada -- The OARS-3 series of metal alloy strip resistors can handle up to 4 W under ambient conditions and without forced air.
The series expand the power rating and thermal performance of TT electronics IRC's line of open-air current sense resistors and was originally specified for a maximum of 3 watts at 70°C.
The unique construction of the resistor, including the open-air design and flexible leads, isolates the hotspot from the circuit board material, preventing circuit board damage.
The resistor uses a heavy-gauge metal resistance alloy with solder-compliant copper terminations and are considered by IRC to be ideal for surge and pulse circuits, AC power applications, current sensing and feedback circuits while presenting a low inductance signature.
Key features inclue a resistance range from 2 milliohms to 15 milliohms, with tolerance to 1% or 5%. Inductance values are less than 10 nanohenries, with operating temperatures ranging from -40°C to >125°C. RoHS-compliant and zero ohm jumper versions are also available.