Unique-Bargains Aluminum Case Resistor 100W 3 Ohm Yellow 2Pcs

Aluminium-cased 100 W wire-wound resistor

This aluminium-housed wire-wound resistor is rated at 100 W with a 3 Ω resistance and 5 % tolerance. It is aimed at engineers and hobbyists who need a stable, high-power load for LED replacement, AC or DC converters, inverters, motor-speed controllers or driver circuits. The compact body measures 59 mm long and weighs 60 g. Two rod terminals with 2 mm holes and a 3.2 mm mounting hole simplify board-level soldering and mechanical fixing.

Replaces lower-rated cement or carbon-film resistors

The part upgrades designs that previously used lower-wattage cement or carbon-film resistors which cannot sustain 100 W continuously. The jump is justified when the circuit demands reliable dissipation at full rating without drift, or when the aluminium case can replace a separate heatsink assembly. It is not suited for buyers who need a different resistance value, tighter tolerance, or a surface-mount footprint.

Sustained 100 W dissipation via aluminium case

Under continuous load the aluminium housing transfers heat directly to the chassis or a mounting surface, keeping the winding within safe temperature limits. The nickel-alloy wire and insulated cover maintain stable resistance during prolonged operation. The 45 mm hole spacing allows secure bolting to a metal panel for optimal thermal coupling. Performance degrades only if the mounting surface cannot absorb the thermal energy.