InP and GaN Wafer Supply Deal Strengthens Macom’s Compound Semiconductor Chain

Macom

InP and GaN wafer supply has become a strategic priority for Macom Technology Solutions as the US semiconductor manufacturer invests in UK-based compound semiconductor wafer supplier IQE. The investment secures long-term epitaxial wafer services and strengthens Macom’s access to materials used in photonics, defence, satellites and 5G telecom systems.

Macom has committed £45mn as part of an £81mn investor package for IQE. The financing includes £23mn of reinvestment from convertible loans and will allow IQE to repay debt while funding core technologies such as indium phosphide and gallium nitride.

InP and GaN wafer supply is increasingly important because both materials sit at the centre of high-performance semiconductor applications. Indium phosphide supports optical transmission and silicon photonics, while gallium nitride enables high-frequency, high-power radio frequency and defence electronics.

The investment also allows IQE to end its strategic review. The company had considered selling or spinning out operations in Taiwan and later examined a possible full sale of the business. Those discussions have now been terminated.

Macom Secures Materials for Photonics and Data Centres

Macom said it will sign long-term supply agreements with IQE across multiple epitaxial technologies. These agreements will support scalable, high-volume manufacturing and strengthen supply-chain resilience.

This matters because AI data centres are driving rapid growth in optical transmission technologies. As computing loads rise, data centres need faster and more energy-efficient data movement between chips, servers and racks.

Indium phosphide is a critical material for lasers and photonic components used in optical networks. It has become a key bottleneck as demand from AI infrastructure, cloud computing and high-speed communications accelerates.

Macom’s strategy includes expanding laser and silicon photonic-based optical transmission products. Long-term InP and GaN wafer supply from IQE gives the company more confidence as it scales these technologies.

IQE also benefits from the arrangement. The funding improves its balance sheet and gives the wafer supplier stronger customer visibility from an existing key customer.

For the compound semiconductor industry, the deal shows how customers are moving closer to upstream wafer suppliers. Securing epitaxial capacity is becoming as important as chip design when materials availability is tight.

GaN Demand Links Defence, Satellites and 5G

Gallium nitride is another core part of Macom’s growth strategy. GaN is used in radio frequency sensors, amplifiers and other components for defence, satellite and 5G telecom systems.

These applications require materials that can handle high power, high frequency and demanding operating conditions. GaN offers performance advantages over conventional silicon in several advanced RF and power applications.

Macom is also developing advanced GaN-on-silicon processes and installing new equipment to modernise and expand manufacturing capabilities. This points to a broader push to scale production while improving cost and process efficiency.

IQE’s manufacturing footprint gives the partnership wider supply-chain relevance. The company operates two sites in south Wales, a facility in Milton Keynes, four plants in the US and operations in Taiwan.

IQE expects revenue to grow by more than 20% in 2026. The company cited strong demand from AI and data-centre photonics, laser and wireless products for smartphones, and continued strength in aerospace and defence.

The transaction also gives Macom a governance role, as the company will join IQE’s board. This deepens the relationship from customer-supplier contracting into strategic influence.

InP and GaN wafer supply will remain critical as semiconductor demand becomes more materials-intensive. Data centres, defence electronics, satellites and telecom infrastructure all need reliable compound semiconductor capacity.

The Metalnomist Commentary

Macom’s investment in IQE shows that semiconductor supply security is moving upstream into compound wafer materials. As AI data centres and defence RF systems expand, control over InP and GaN capacity will become a strategic advantage, not just a procurement issue.