5G Base Station Thermal Components for a Global Infrastructure Leader

Client	A global 5G infrastructure leader
Sector	Telecom & Automotive Lighting
Region	China, with global network deployments
Programme	5G base station thermal components and intelligent automotive lighting

Client identity is described by market position rather than by name, in line with our confidentiality commitments.

Nominated supplier for 5G base station heat dissipation components and intelligent automotive lighting projects, supplying extruded aluminium thermal sections into outdoor telecom infrastructure.

The challenge

Base station thermal components sit outdoors for years with no service access, so the heat path has to hold its performance for the life of the installation rather than just pass an incoming test. The sections also had to be produced at network-deployment volumes, where a dimensional drift discovered late means thousands of units already in the field. Separately, the intelligent lighting project added a visible-surface requirement on top of the thermal one.

What we did

Thermal section designed around the dissipation target

Rather than working only to a drawing, we reviewed the dissipated load and the outdoor convection condition, then proposed a fin section the press could hold in volume. Fins from 0.3 mm are routine for us; we flag honestly when an aspect ratio is beyond stable repeat production.

Substrate integrity for long-term outdoor duty

Ceramic-filtered, degassed and homogenised primary billet removes the sand holes and weld lines that would otherwise create local hot spots and weaken the section over time.

Machined interface faces

Where the thermal component mounts to the equipment, the interface was CNC-machined for flatness so the thermal interface layer stays thin and uniform for the life of the installation.

Volume consistency from an in-house chain

Two automated extrusion lines with in-process checking, and wall thickness held to ±0.02 mm against a GB standard of ±0.05 mm, so deployment-scale volumes were repeatable rather than sampled.

Results

Result	Measured
±0.02 mm	Wall thickness held, versus ±0.05 mm GB standard
0.3 mm	Minimum fin thickness available
2	Automated extrusion lines behind the programme

• Nominated supplier status on 5G base station thermal components.
• Thermal sections produced at network-deployment volumes with in-process verification.
• Mounting interfaces machined for long-term thermal stability in outdoor installations.
• Same plant also taken on to intelligent automotive lighting projects.

Why it held in production

Every stage of this programme ran inside our own plant — tooling design, extrusion, CNC machining, surface treatment and assembly. That is the reason the result repeated rather than appearing once on a first article: when a parameter needs adjusting, we change it and verify it the same day instead of negotiating through a subcontractor. We hold ISO 9001 across the process, with wall thickness at ±0.02 mm against a GB standard of ±0.05 mm and cut-to-length at ±0.005 mm.

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