HBM2e 5 items

Stacks in this catalogue run from 8 GB to 36 GB across HBM2, HBM2e, HBM3 and HBM3e. The parts in this category are memory devices intended for board-level work rather than modules to be seated in a socket. High Bandwidth Memory reaches its bandwidth by stacking DRAM dies and connecting them vertically with through-silicon vias, then placing the stack on a silicon interposer beside a logic die. That structure is why HBM generation, capacity per stack and the package format all have to match the target assembly, and why a part that is electrically correct can still be unusable if the package or the generation does not correspond.

These lines therefore turn on exact part identification more than on generic specification. When you enquire, send the marking on the device, the package type and the assembly it is intended for; we will confirm what the recorded lot actually is, and state plainly where a marking could not be verified rather than inferring a match. Photographs of the marking and any test records available for the specific lot are provided on request before you commit.

Each listing is a distinct physical lot rather than a catalogue line, and opens onto its own page with the full specification: SKU, capacity, form factor, speed, condition, quantity and price. The SKU identifies the exact part, the condition field states how that stock was graded, and the availability field reflects what was recorded at the last stock review. Where a unit price is shown, it is the FCA Shenzhen price for the standard tested grade at quantity one. Where a listing reads "Request quote", unit pricing depends on the quantity, the grade and the delivery address, and is issued in writing rather than published.

Part numbers that do not appear here are supplied on request from our Shenzhen stock. The list shows what is palletised today; everything else in the range is quoted against a confirmed enquiry. If you are looking for a specific part number, send it with the quantity you need and we confirm the lot, the grade and the shipping window.

3 grades appear in the condition column, and the difference between them is a difference in who carries the risk rather than in whether a part works:

• New — factory-new and sealed. Lowest risk, highest cost, and any manufacturer warranty passes through unchanged.
• Refurbished — cleaned, inspected and functionally verified before packing. Cosmetic wear is normal and does not affect operation.
• Pulled and tested — removed from decommissioned equipment and functionally verified by us. The usual choice when working parts are needed at a fraction of new cost and normal signs of prior use are acceptable.

Because grade drives both price and risk, it is restated on every written quotation rather than left to interpretation from the listing.

The grade is stated on the listing and restated on the written quotation, because it is the grade that decides how much of the risk sits with us and how much sits with you.

Enquiries are answered within 2 hours during Shenzhen business hours. Lots are supplied from Shenzhen and can be inspected before shipment. Buyers based locally, or travelling through, can arrange a visit; remote buyers can request photographs and test records for the specific lot before committing. A quotation is valid until the end of the business day on which it is issued (China time), and a quotation is not an order — an order begins when you confirm the lot and the destination.

Lead time is confirmed against the lot and the destination rather than assumed. Where stock is on hand and the destination is served directly, dispatch follows cleared payment. Where the quantity exceeds what is on hand, we supply against the confirmed order and state the expected window in the quotation. Documentation, packing and any certification the destination requires are confirmed per order, and the part numbers quoted are the part numbers shipped.