Look closely at your hardware. If you are looking at a bare RAM chip on a graphics card or memory stick, write down the 5-digit FBGA code. If you are looking at a sticker on a server DIMM, find the long "MT" part number. Step 2: Use Official Micron Tools
Following a colon at the very end of the part number, a single letter indicates the silicon generation. This is crucial for matching identical chips in dual-channel configurations. First generation of that specific silicon design.
The next characters define the DRAM generation and voltage. In “40A,” the “40” indicates DDR4 SDRAM. (For DDR3, this would be “41” or “8K”; for DDR5, newer prefixes like “60B” appear). The “A” denotes the specific version or design family, often linked to voltage—for example, “A” typically signifies 1.2V VDD/VDDQ for DDR4. This field is critical because mixing voltages can destroy components.
NAND flash parts use a different but equally logical schema:
: 1 Gigabit depth x 8-bit width (8 Gb total chip density)
Using the Micron Official Numbering System guide ensures you have the latest information directly from the manufacturer.
This is critical for timing.
These letters indicate the physical package type, ball count, and materials (such as Lead-Free FBGA):
Have a mystery part number? Drop it in the comments—let’s decode it together.
Usually printed in a format like D9XVK or D9ZLN .
Look closely at your hardware. If you are looking at a bare RAM chip on a graphics card or memory stick, write down the 5-digit FBGA code. If you are looking at a sticker on a server DIMM, find the long "MT" part number. Step 2: Use Official Micron Tools
Following a colon at the very end of the part number, a single letter indicates the silicon generation. This is crucial for matching identical chips in dual-channel configurations. First generation of that specific silicon design.
The next characters define the DRAM generation and voltage. In “40A,” the “40” indicates DDR4 SDRAM. (For DDR3, this would be “41” or “8K”; for DDR5, newer prefixes like “60B” appear). The “A” denotes the specific version or design family, often linked to voltage—for example, “A” typically signifies 1.2V VDD/VDDQ for DDR4. This field is critical because mixing voltages can destroy components. micron memory part number decoder
NAND flash parts use a different but equally logical schema:
: 1 Gigabit depth x 8-bit width (8 Gb total chip density) Look closely at your hardware
Using the Micron Official Numbering System guide ensures you have the latest information directly from the manufacturer.
This is critical for timing.
These letters indicate the physical package type, ball count, and materials (such as Lead-Free FBGA):
Have a mystery part number? Drop it in the comments—let’s decode it together. Step 2: Use Official Micron Tools Following a
Usually printed in a format like D9XVK or D9ZLN .
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