Unique-Bargains
Unique-Bargains 25W 120 Ohm Aluminium Housing Chassis Mount Wirewound Resistors Gold 2pcs
Chassis-mount 120 Ω 25 W wirewound resistors in gold aluminium housings, 53 × 28 × 15.5 mm, 3.5 mm fixing hole, supplied as a pair
- Featurescool plate Chassis Mount Aluminum Housing resistor;high powe
- Chassis-mount design with 3.5 mm fixing holes for secure installation
- Aluminium housing dissipates heat efficiently in harsh environments
- 25 W power rating handles high-load circuits reliably
- 120 Ω ±5 % wirewound element delivers stable resistance
- Compact 53 × 28 × 15.5 mm body fits tight spaces
25 W 120 Ω wirewound resistors
These aluminium-housed wirewound resistors are rated at 25 W and 120 Ω with a ±5 % tolerance. They are built for chassis mounting in power supplies, transducers, elevator controls, arena audio gear and ring-doorbell circuits where a rugged, high-power load component is required.
Sustained-load thermal behaviour
The aluminium housing acts as a heat-dissipation plate and is designed for cooling-plate installation. This construction maintains stable resistance during continuous high-power operation and resists vibration-induced drift in harsh environments.
Chassis mounting and common issues
Each unit measures 53 × 28 × 15.5 mm with a 3.5 mm mounting hole for screw fixing. The small footprint allows dense layouts, but installers must ensure firm contact with the cooling surface and avoid over-torquing the screws to prevent ceramic core damage.
Highlights
- Chassis-mount design with 3.5 mm fixing holes for secure installation
- Aluminium housing dissipates heat efficiently in harsh environments
- 25 W power rating handles high-load circuits reliably
- 120 Ω ±5 % wirewound element delivers stable resistance
- Compact 53 × 28 × 15.5 mm body fits tight spaces
Specifications
| Brand | Unique Bargains |
|---|---|
| Features | cool plate Chassis Mount Aluminum Housing resistor;high power load aluminum Case resistor;good performance in vibration Single Fix Resistors;ring doorbell Resistorsring doorbell Resistors;high quality Wirewound Resistor |
Questions about this item
How hot does the aluminium housing get when the 25 W rating is sustained all day?
The aluminium housing is designed for heat dissipation and can be mounted on a cooling plate to manage temperature during continuous 25 W operation.
What mounting hardware must I already have to install these chassis-mount resistors?
You need screws to fit the 3.5 mm mounting holes and a flat metal surface or cooling plate for secure chassis attachment.
Will the 120 Ω 5 % tolerance value stay stable when replacing older wirewound resistors in a ring doorbell circuit?
Yes, the 120 Ω ±5 % wirewound element maintains its value under vibration and high power, matching legacy doorbell requirements.
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