SK hynix
SK hynix memory in stock at YILUDA TECH. Thirteen SK hynix lines are held as 100% original, new and unused material, covering DDR3, DDR4, LPDDR4, NAND flash and managed memory.
What is stocked
- DDR3 — H5TQ4G63EFR, H5TQ4G83CFR, H5TQ2G63GFR and H5TQ2G83BFR.
- DDR4 — H5AN8G8NDJR.
- LPDDR4 — H9HCNNNBPUMLHR and H9HCNNNCPUMLXR.
- Flash — H27Q4T8LEA9R, H25BFT8F4M9R and H25T2TB88EX321N.
Reading the prefix
SK hynix encodes the product type in the first characters, and this is the fastest way to avoid a costly mistake. H5T is DDR3, H5AN is DDR4, H9H is LPDDR4, and the H27 and H25 prefixes mark NAND flash generations. The next field is density and organisation: H5TQ4G63EFR is a 4 Gb DDR3 device organised as 256M by 16, while H5TQ2G83BFR is a 2 Gb part organised as 256M by 8. Same family, different density and different bus width.
The line after the part number
The short group that follows — TEC, RDC, PBC — is not part of the orderable model. It encodes speed grade, package type and temperature class, and sometimes a die revision. Two modules populated with parts that differ only in that group can fail to train at the rated speed, because the timing parameters are binned differently. When replacing memory on a board that already has a working sample, read the full first and second lines from the package rather than matching on density alone.
Substitution rules
- DDR3, DDR3L and DDR4 are not interchangeable in any direction; the supply rail and the signalling standard differ.
- Bus width is fixed by the board layout — a by-8 part cannot populate a by-16 site.
- Worldwide shipping from Shenzhen by DHL, FedEx or UPS.
Need a specific density, organisation or speed grade?
Send the full code including the second line, the socket type and the quantity, and we will check what SK hynix stock we hold or can source.
Related memory: Micron, Samsung, Winbond, full inventory.
