Accelerating data centre deployment with zinc die casting

The race for hyperscale data infrastructure

The exponential surge in artificial intelligence, machine learning workloads, and cloud computing has placed unprecedented demand on data centre infrastructure. At the core of high-speed data centres are next-generation optical transceiver modules. These are precision-engineered devices that convert high-bandwidth electrical signals into optical pulses via advanced photonic chips.

When a leading North American data centre networking company began developing its next-generation optical transceiver line, speed-to-market was the ultimate priority. In the hyper-competitive telecommunications and data hardware sector, missing a launch window by even weeks risks lost market share.

The customer challenge: scaling beyond machined aluminium

The OEM faced a multi-faceted manufacturing challenge:

• Production bottlenecks & high costs: The customer originally evaluated machined aluminium and standard die casting suppliers. However, extensive CNC machining requirements led to long cycle times, high cost-per-unit, and slow scaling.
• Supply chain resilience: The customer required a reliable, scalable North American supply chain close to their manufacturing and assembly operations to protect against international freight disruptions.
• Turnkey finishing integration: Beyond raw castings, the application required tight-tolerance secondary CNC machining and specialised electroless nickel (EN) plating for strict corrosion resistance and electrical conductivity.
• Beyond price-per-part: Competing suppliers focused solely on unit price. The OEM needed an engineering partner capable of evaluating total cost of ownership, speed, and long-term production scalability.

The Dynacast solution: re-engineering with Multi-Slide zinc

Dynacast's engineering team collaborated directly with the OEM's design group to evaluate alternative materials and manufacturing methodologies. Rather than forcing a conventional aluminium die casting process, Dynacast demonstrated that transitioning to Multi-Slide Zamak 3 die casting offered superior thermal, electrical, and economic performance.

Material & process comparison: Zamak 3 vs. A380 aluminium

Application & engineering precision

The project focused on engineering precision top and bottom matching housing sets for optical transceiver modules operating in high-density data centre environments. Multiple housing sizes were designed to accommodate varying data transmission rates. Key technical achievements included:

• High-density thermal fin geometries were cast directly into the housing body to dissipate heat from sensitive laser drivers and optical engines.
• Multi-Slide technology achieved complex features, zero-draft walls, and micro-scale geometry straight out of the mould, virtually eliminating secondary CNC operations.
• End-to-end management of electroless nickel (EN) plating ensured maximum corrosion protection, optimal contact resistance, and superior EMI/RFI attenuation.

Quantifiable business results

By choosing Dynacast as an engineering and manufacturing partner, the customer achieved decisive competitive advantages:

• Accelerated time-to-market: Rapid tooling builds and fast Multi-Slide prototyping enabled early qualification and ahead-of-schedule commercial delivery.
• Resilient North American supply base: Domestic production proximity minimised logistics risk, reduced pipeline inventory, and enabled agile production scaling.
• Reduced total manufacturing costs: Shifting from machined aluminium to near-net zinc reduced part complexity, lowered cycle times, and minimised tooling outlay.
• Long-term production assurance: Backed by Dynacast's perpetual tooling guarantee, the customer secured lifetime mould maintenance, continuous capacity planning, and long-term supply stability.

Partnering for the future of data centre innovation

As hyperscale data centres continue to evolve to meet the workload processing demands of AI and next-generation telecommunications, hardware OEM success hinges on manufacturing agility, thermal efficiency, and precision at scale. Early-stage material selection and design-for-manufacturability (DFM) are no longer just production decisions. They are strategic differentiators that dictate market leadership.

By looking beyond traditional aluminium machining and leveraging Multi-Slide zinc die casting, forward-thinking networking pioneers can eliminate cost barriers and achieve unprecedented time-to-market advantages. Dynacast remains committed to empowering engineering teams with complete turnkey solutions that combine micro-precision casting, surface finishing, and localised supply chain resilience to build the foundation of tomorrow's digital infrastructure.

Frequently asked questions

Q: Why is Zamak 3 zinc preferred over A380 aluminium for optical transceiver housings?

A: Zamak 3 zinc provides tighter dimensional tolerances, superior electrical conductivity for EMI shielding, higher thermal castability for intricate heat sink fins, lower initial tooling costs, and multi-million shot tool lifespans compared to A380 aluminium.

Q: What are the benefits of Multi-Slide die casting for data centre hardware components?

A: Multi-Slide die casting enables net-shape complex geometries with tight tolerances (±0.001"), zero draft angles, fast cycle times, and minimal secondary CNC machining requirements.

Q: How does Dynacast support turnkey finishing for optical and electrical applications?

A: Dynacast manages complete turnkey secondary operations—including CNC machining, surface prep, and electroless nickel (EN) plating—to deliver ready-to-assemble components with optimal corrosion resistance and conductivity.