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Green aluminium chassis-mount wirewound resistor, rectangular finned body with mounting tabs

Unique-Bargains

Unique-Bargains 25W 1k Ohm Aluminium Chassis Mount Wirewound Resistor Green

SKU CH-WR17-YJ1R9

A 1k ohm 25 W wirewound resistor with aluminium housing for chassis mounting and heat dissipation

  • Key featuresCool plate Chassis Mount Aluminum Housing resistor;high powe
  • 25 W power rating handles demanding circuits
  • 1 kΩ ±5 % tolerance ensures precise resistance
  • Aluminium housing dissipates heat for stable operation
  • Chassis-mount design with 3.5 mm screw hole simplifies installation
  • Compact 27 × 16 × 15.5 mm body fits tight spaces

Power Resistor 25W 1k Ohm

This aluminium-housed wirewound resistor delivers 25W continuous dissipation in a compact chassis-mount package. The green anodised case measures 53 x 27 x 15.5mm and includes a 3.5mm mounting hole for secure screw attachment to a heatsink or panel. It is rated at 1k ohm with a 5% tolerance.

Suited for fixed loads and vibration-heavy duties

Designers needing a single, robust power resistor for doorbell circuits, transducer biasing or industrial power supplies will find the wirewound element and aluminium housing reliable. Engineers who require adjustable resistance, surface-mount footprints or values far outside 1k ohm should select a different component type.

The 25W rating in a 53mm body

The 25W power rating within the 53mm total length is the decisive figure; it dictates whether the part can handle the thermal load without an external heatsink. Verify your circuit's actual dissipation against this rating before purchasing.

How it compares

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

Price $4.99
Cheaper than about 90% of the 265 comparable items (median $9.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

How hot does the 25 W aluminium-housed resistor get during continuous operation?

The aluminium housing is designed to dissipate heat when mounted on a cooling plate; with the chassis fixed via the 3.5 mm screw hole, the body stays within safe limits for a 25 W wirewound part.

What mounting hardware must I already have to install this chassis-mount resistor?

You need a flat metal surface or cooling plate plus a 3.5 mm screw or bolt to secure the 27 × 16 × 15.5 mm aluminium body through its single mounting hole.

Will the 1 kΩ ±5 % wirewound resistor work in series with the original coil in a vintage ring doorbell circuit?

Yes — the 1 kΩ ±5 % wirewound element matches typical doorbell coil resistance and the aluminium housing handles the power, so it can replace or supplement the original resistor.

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