Apple Reveals Plans to Shift Production of Upcoming Baltra ASIC In-House

Apple is known for its ability to maintain secrecy surrounding its innovations, often preferring spectacular product unveilings over the gradual release of information. Nonetheless, with its extensive supply chain, leaks are an inevitable part of the game. Recently, intriguing news has surfaced about Apple’s forthcoming application-specific integrated circuit (ASIC), internally referred to as Baltra.

Apple’s Shift to In-House Production for AI ASIC

Recent reports from a South Korean source indicate that Samsung Electro-Mechanics (SEMCO), a firm specializing in crucial electronic components, multilayer ceramic capacitors, and chip substrates, has provided samples of its glass substrate, referred to as T-glass, not only to Broadcom but also to Apple.

To clarify, a substrate is the foundational layer where Integrated Circuits (ICs) and various components reside, crucial for heat dissipation. T-glass is a specialized fiberglass with a high silica content that is ideal for microchip substrates. It replaces the traditional organic-material core of flip-chip ball grid arrays (FC-BGA) and offers significant advantages such as enhanced thermal stability, a smoother surface for complex wiring, and greater overall reliability.

Why does this information matter? Broadcom is a key player in the AI ASIC design market and is currently working alongside Apple to create a custom AI server chip, nicknamed Baltra. As we’ve previously mentioned, this AI server chip is anticipated to utilize TSMC’s advanced 3nm N3E manufacturing process and will feature various chiplets, each designed for specific functions. Apple aims to integrate these chiplets into a cohesive unit, while Broadcom will assist in ensuring efficient communication between the chiplets as they operate concurrently within Apple’s AI server architecture. This modular design allows Apple to keep the overall structure of its Baltra ASIC discreet, even from collaborators like Broadcom.

The acquisition of T-glass samples from SEMCO signifies Apple’s serious commitment to this siloed strategy for its Baltra ASIC. In the short term, this direct sourcing means Apple can closely evaluate the quality of packaging methods that Broadcom will apply to its AI ASIC. In the long term, this move likely indicates Apple’s intent to centralize the design process of Baltra within its own operations, which aligns well with the company’s historical preference for vertical integration to enhance control over its technology.

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