Called LTA 30, they are intended to operate across -55 to +125°C and handle overloads up to 1.5x their rating for five seconds, as well as operating at 500V if this does not contravene the power rating.
Packaging is TO-220 for direct mounting on a heatsink, where dielectric strength is 1.5kVrms.
Without heatsinking, 2.25W can be dissipated at +25°C.
Construction is non-inductive and values are available from 0.010Ω to 450kΩ, with tolerances as tight as ±1% above 500mΩ and 5% below.
Temperature coefficient is ±150ppm/°C above 500mΩ, and not as tight below.
The company sees the devices being used to pre-charge or discharge capacitor banks in on-board chargers, battery management systems and motor controls in electric vehicles.
