Huawei Develops 122TB SSD with New Packaging Tech to Sidestep US Sanctions on 3D NAND Chips — Chinese Firm Develops Proprietary Tech to Cram More NAND Dies in a Smaller Footprint

Why It Matters

By engineering a home‑grown packaging solution, Huawei restores competitive storage capacity and reduces reliance on U.S.‑origin components, strengthening China’s semiconductor self‑sufficiency. The move signals a broader shift toward indigenous supply chains in the global AI hardware market.

Key Takeaways

• Huawei's 122TB SSD uses Die-on-Board packaging.
• DoB lets Huawei bypass US‑origin 3D NAND restrictions.
• YMTC's 232‑layer NAND limits capacity versus 400‑layer rivals.
• New OceanDisk 1800 addresses thermal and signal challenges.
• Strategy boosts Chinese chip revenue and reduces US tech dependence.

Pulse Analysis

The United States has kept Huawei off the Entity List since 2019, blocking access to cutting‑edge 3D NAND that now exceeds 400 layers. While rivals such as Samsung and SK Hynix continue to push density with American‑origin technology, Chinese firms like YMTC are capped at 232 layers. This disparity threatened Huawei’s ability to supply high‑capacity SSDs for AI and cloud workloads, prompting the company to innovate beyond traditional BGA or TSOP packaging.

Huawei’s answer is Die‑on‑Board (DoB) packaging, a method that mounts individual NAND dies directly onto the SSD’s printed circuit board. By forgoing the conventional stacked‑die approach, DoB effectively multiplies usable die count within the same footprint, allowing the OceanDisk 1800 to reach 122.88 TB using YMTC’s less dense chips. The design also eliminates several costly steps, such as wafer‑level stacking and advanced interposers, resulting in lower production expenses. Engineers overcame typical DoB hurdles—heat dissipation and signal integrity—through refined PCB layout, thermal vias, and adaptive firmware, proving the concept can meet enterprise reliability standards.

Strategically, the DoB breakthrough bolsters China’s drive toward semiconductor independence. As domestic AI firms increasingly adopt locally sourced chips amid broader bans on Nvidia and Intel GPUs, demand for high‑capacity storage will surge, funneling revenue to Chinese manufacturers. Huawei’s success may encourage other OEMs to explore alternative packaging, accelerating a shift away from U.S.‑controlled supply chains. In the longer term, the ability to scale storage without foreign NAND could narrow the performance gap in data‑center infrastructure, reshaping competitive dynamics across the global AI hardware market.