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Two green aluminium-cased wirewound resistors with mounting tabs

Unique-Bargains

Unique-Bargains 50W 25 Ohm Wirewound Power Resistor Chassis Mount Green 2pcs

SKU CH-1DCY-RVVMV

Two 50 W wirewound resistors with aluminium chassis-mount housings for heat dissipation

  • Key featuresCool plate Chassis Mount Aluminum Housing resistor;high powe
  • Aluminium housing draws heat away from the element
  • 50 W rating handles demanding power circuits
  • ±5 % tolerance keeps resistance stable under load
  • Chassis-mount design with 3.5 mm screw holes secures the part
  • Two resistors per pack cover dual-channel or spare needs

Aluminium Housing Power Resistor

Two 25 ohm wirewound resistors rated at 50 watts each with aluminium casings for chassis mounting. The green housings measure 49.5 by 27 by 15.5 millimetres and weigh 48 grams per pair. They are supplied new as a pack of two for industrial and hobbyist power circuits.

Chassis Mount Thermal Design

Each unit uses a 3.5 millimetre mounting hole for screw fixation to a metal plate or enclosure that acts as a heatsink. The aluminium, ceramic and alloy construction dissipates heat without a fan, freeing airflow space inside tight cabinets. Vibration resistance suits equipment subject to mechanical shock.

Replaces Lower Power Axial Types

The 50 watt rating and chassis mount replace smaller axial resistors that overheat in continuous duty. The jump is worth it when dissipation exceeds what free air convection can handle or when vibration would fatigue lead wires. Not for circuits needing non-inductive windings or surface mount footprints.

How it compares

Measured against everything we stock in Passive Components & Solder Supplies, at today’s prices. Recalculated every night.

Price $6.99
Cheaper than about 65% of the 265 comparable items (median $9.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

What is the 50 W power rating limit under continuous operation?

The resistor is rated for 50 W continuous dissipation when properly mounted to a cooling surface.

How much heat does the aluminium housing dissipate during all-day use?

The aluminium chassis-mount housing transfers heat to the mounting plate; temperature rise depends on the thermal resistance of that plate and airflow.

What mounting hardware must I already have to install the 3.5 mm chassis holes?

You need M3 or equivalent screws, washers and a flat metal mounting surface with 3.5 mm clearance holes spaced to the resistor footprint.

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