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Five green aluminium chassis-mount wirewound resistors with mounting holes

Unique-Bargains

Unique-Bargains 25W 68 Ohm Aluminium Chassis Mount Wirewound Resistors Green 5pcs

SKU CH-X1TX-N6ACM

Five 25 W wirewound resistors with aluminium chassis-mount housings for heat dissipation

  • 25 W power rating handles demanding circuits
  • 68 Ω ±5 % tolerance ensures precise resistance
  • Aluminium chassis housing dissipates heat efficiently
  • 5 mm mounting holes simplify screw-down installation
  • Pack of five resistors supports multi-point designs

Purpose and application

This pack supplies five aluminium-housed wirewound resistors rated at 68 ohms with a 5 percent tolerance and a 25 watt power rating. They are built for circuits that need a stable, high-power load such as power supplies, transducers, elevator controls and arena audio systems.

Construction and mounting

Each unit uses an aluminium, ceramic and alloy casing measuring 27 by 16 by 15.5 millimetres with an overall length of 53 millimetres including mounting tabs. A 3.5 millimetre mounting hole allows secure chassis attachment with screws, and the metal housing transfers heat efficiently to a cooling plate for reliable operation in harsh environments.

Upgrade path and fit

The resistors replace lower-wattage or non-chassis parts where vibration resistance and high insulation are required. The jump is worthwhile when a design demands 25 watts of continuous dissipation in a compact 53 millimetre package and the mounting scheme matches the 3.5 millimetre hole spacing.

How it compares

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

Price $8.99
Cheaper than about 55% of the 265 comparable items (median $9.99).

Specifications

Product
Brand nameUnique Bargains

Questions about this item

What power rating does the 68 ohm wirewound resistor handle?

Each resistor is rated for 25 W continuous dissipation when mounted to a suitable metal surface.

What screw-hole diameter must the chassis provide for these 27 x 16 x 15.5 mm aluminium-housed resistors?

The mounting hole is 3.5 mm, so a 3.5 mm clearance hole or M3 tapped hole is required.

How do you secure the 53 mm total-length resistor to a heatsink without cracking the ceramic core?

Apply thermal compound, align the 3.5 mm hole, torque the mounting screw to the manufacturer's specification, then solder the leads.

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