NAND Flash Selection & Supply Assessment Guide
NAND Flash comes as SLC / MLC / TLC with parallel or SPI interfaces, widely used for boot and data storage in industrial, networking and embedded devices. HGCHIPS produces 126 DRAM parts (DDR3 / DDR4 / LPDDR4·LPDDR4X); for NAND projects send your requirements and we will run a supply assessment against capacity, interface, temperature and endurance.
Selection Notes
| Item | Notes |
|---|---|
| Cell type | SLC offers the highest endurance for frequent writes and industrial use; TLC lowers cost for large-capacity or low-write workloads. |
| Interface | SPI NAND needs fewer pins and lowers cost; parallel NAND offers higher bandwidth at the cost of more I/O. |
| Bad blocks and ECC | Match the part to your controller ECC capability; confirm bad-block strategy and spare area definition. |
| Temperature and endurance | Industrial temperature range and high P/E cycles are essential for industrial and power-metering designs. |
HGCHIPS Production Range (drop-in available)
| Family | Production parts | Density | Package | Reference |
|---|---|---|---|---|
| DDR3 SDRAM | 57 | 1Gb–8Gb | VFBGA-96 | DDR3 list |
| DDR4 SDRAM | 30 | 4Gb–32Gb | FBGA-78/96 | DDR4 list |
| LPDDR4 / LPDDR4X | 39 | 4Gb–128Gb | VFBGA-200 | LPDDR4/4X list |
| ADI uModule power modules | 30 | 2A–100A | LGA / BGA | ADI list |
Memory replacement inside the same BOM
This family is outside our production range, but industrial boards, set-top boxes, networking and surveillance devices that use it almost always carry DDR3 / DDR4 / LPDDR4 as well — and those we replace drop-in:
| Family | Production parts | Density | Package | Reference |
|---|---|---|---|---|
| DDR3 SDRAM | 57 | 1Gb–8Gb | VFBGA-96 | DDR3 list |
| DDR4 SDRAM | 30 | 4Gb–32Gb | FBGA-78/96 | DDR4 list |
| LPDDR4 / LPDDR4X | 39 | 4Gb–128Gb | VFBGA-200 | LPDDR4/4X list |
For the eMMC / NAND part itself, email the full part number, capacity, interface version, temperature grade and annual volume to info@hgtech.cc and we will run a supply assessment.
Six-step replacement self-check
- Lock the full part number — density, organization, speed, voltage and temperature suffix are all required.
- Compare pin-out and package — pin count and ball map must match, otherwise the board has to change.
- Compare timing and registers — tRCD / tRP / CL and mode register settings must fall inside the platform envelope.
- Confirm the grade — industrial needs -40~85C evidence, automotive needs AEC-Q100 documentation.
- Validate in small quantity — 10–50 pcs with burn-in and thermal cycling before ramp-up.
- Lock the supply — MOQ, lead time and lot consistency, with the second source written into the BOM.
Why replacements fail
- Matching density but not organization (x8 vs x16) — rank count no longer matches the controller.
- Mixing DDR3L 1.35V with DDR3 1.5V — retention and long-term reliability risk.
- Ignoring the temperature suffix — commercial parts fail cold start at -40C.
- Ignoring SPD / PMIC differences when swapping components (DDR4 / DDR5).
- Not validating firmware and controller compatibility (most common with eMMC / NAND).
How to Submit a Requirement
- Email the full original part number (with suffix), annual volume and platform details to info@hgtech.cc.
- Or use the Model Finder to check production parts first.
- Our FAE team compares density, organization, speed, voltage, package and temperature and replies with a feasible option and lead time.
Contact: info@hgtech.cc · +86 760 8992 4799
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