High Bandwidth Memory (HBM) is the most supply-constrained component in the semiconductor industry. Driven by explosive AI data center buildout, demand for HBM3E has far outpaced what SK Hynix, Samsung, and Micron can produce. Lead times for new allocation run 18–24 months. BraunEC monitors secondary market channels and can engage on HBM sourcing inquiries for qualified buyers.
Legacy AI accelerators (A100, MI100)
Second-gen HBM. Found in older data center GPUs. Being phased out in favor of HBM3/3E; available in secondary market only.
H100, data center AI
Bandwidth up to 819 GB/s. Primary memory in NVIDIA H100 and AMD MI250X. Allocation largely locked up by hyperscalers.
H200, B200, MI300X, TPU v5
Current-generation standard. Up to 1.15 TB/s bandwidth. Powers the latest AI training clusters. 18–24 month lead times for new allocation.
Next-gen AI accelerators (2027+)
In qualification at Samsung and SK Hynix. Volume production expected late 2026 for select customers. Not yet available for general procurement.
HBM sourcing inquiry
HBM is not typically available through open distributor channels. Submit your part number, quantity, and delivery window — we'll engage on availability.
HBM is a specialized type of DRAM that stacks multiple memory dies vertically using Through-Silicon Via (TSV) technology and connects them directly to the processor via a silicon interposer. This architecture delivers extremely high memory bandwidth — up to 1.15 TB/s for HBM3E — at much lower power per bit than conventional DRAM. It's essential for AI training and inference workloads that are bottlenecked by memory bandwidth.
HBM is in shortage because AI training and inference demand has grown far faster than HBM production capacity can scale. Manufacturing HBM requires specialized TSV packaging infrastructure that takes years to build out. SK Hynix, Samsung, and Micron — the only three HBM manufacturers in the world — are all running at or near full capacity. NVIDIA, AMD, Google, and other AI chip designers are competing aggressively for available allocation.
For new allocation requests, HBM3E lead times in 2026 run 18–24 months minimum. In many cases, large hyperscalers and chip designers have pre-committed supply through 2027 and beyond. Secondary market availability exists but is extremely limited and commands a significant premium.
HBM is not typically available through standard distributor channels. It is allocated directly by manufacturers (SK Hynix, Samsung, Micron) to qualified chip designers and OEM partners. For secondary market sourcing or flexible allocation, working with a specialized broker like BraunEC is the most practical path. Submit a quote request with your part number, quantity, and target delivery window.
HBM3E is the extended specification of HBM3. HBM3E offers approximately 50% more bandwidth per stack (up to 1.15 TB/s vs ~819 GB/s), higher capacity per stack (up to 36 GB vs 24 GB), and improved power efficiency. HBM3E is the current standard for new AI accelerator designs including NVIDIA B200, AMD MI300X, and Google TPU v5.
There are only three HBM manufacturers in the world: SK Hynix (market leader, primary supplier to NVIDIA), Samsung Electronics, and Micron Technology (a newer entrant ramping HBM3E capacity). This extreme supplier concentration is one of the key reasons HBM supply cannot quickly respond to demand surges.