Unique-Bargains 25W 800 Ohm Chassis Mount Wirewound Resistor Gold 1pcs

25 W Wirewound Resistor for Chassis Mounting

This 800 ohm wirewound resistor is rated for 25 W continuous dissipation and is built for chassis mounting with screws. It suits engineers and hobbyists who need a single high-power resistive element for power supplies, transducers, elevator controls or audio equipment. The aluminium housing provides a thermal path to a cooling plate for reliable operation in harsh environments. Tolerance is ±5 % and the unit weighs 14 g.

Aluminium Housing with Mounting Hole for Thermal

The resistor body measures 28 x 16 x 15.5 mm and the overall length including tabs is 53 mm. A 3.5 mm mounting hole allows secure fastening to a heatsink or chassis, transferring heat directly into the metal structure. This arrangement frees the circuit board from thermal stress and eliminates the need for bulky through-hole power resistors. The gold-coloured alloy and ceramic casing resists vibration and suits multiple wiring configurations.

Sustained 25 W Operation

Under continuous load the aluminium case conducts heat away from the wirewound element into the mounting surface, keeping resistance drift within the stated tolerance. The non-inductive winding option minimises reactive effects during prolonged high-current pulses. Performance remains stable in the atrocious environments cited by the manufacturer, such as industrial power supplies and arena audio systems. Buyers who need higher power ratings or different resistance values must select alternative parts.