Micron provides an official FBGA and Component Marking Decoder to convert this short code into a full part number. 2. Breaking Down the Part Number (Documentation Level) Once you have the full part number (e.g., MT40A512M16LY-083R:H
If you are decoding a full retail or enterprise module (like an NVMe SSD or a laptop SO-DIMM) rather than an individual chip, the prefix changes from to specific module codes:
MT18ASF...
If you see -40 anywhere in the suffix, that usually indicates -40°C operating range. Standard parts will not have that. For embedded systems, never substitute a commercial part for an industrial one.
Micron’s Dynamic Random-Access Memory (DRAM) includes DDR3, DDR4, DDR5, and Low-Power DDR (LPDDR) modules. A typical DRAM component part number looks like this: . micron memory part number decoder
: These are long strings. They usually start with letters like MT . They are easy to read if you have the official chart.
Micron Technology is a leading manufacturer of memory and storage products, including DRAM, SRAM, Flash, and other types of memory. Micron's product portfolio is vast, with thousands of different part numbers across various product lines. Decoding these part numbers can be a daunting task, especially for engineers, procurement specialists, and distributors who need to identify and source specific memory components. This paper aims to provide a comprehensive guide to decoding Micron memory part numbers, enabling readers to understand the structure and meaning behind these part numbers.
This section defines the memory technology generation and its required operating voltage. : DDR4 SDRAM (1.2V) 60B : DDR5 SDRAM (1.1V) 53D : LPDDR4 SDRAM (1.1V / 1.8V) 62M : LPDDR5 SDRAM (1.05V / 1.8V) 3. Density and Architecture (Organization)
A two-letter code specifies the physical package, ball count, and material composition (such as lead-free or halogen-free matrices). Micron provides an official FBGA and Component Marking
: It acts as a bridge between the physical marking on a chip (e.g., a five-digit alphanumeric string like "D9WFK") and the official Marketing Part Number (MPN) Data Sheet Access
. For overclockers, this is the most critical part. Certain revisions, like the legendary (D-die) or
“-062E” is where timing enthusiasts focus. The “062” indicates the minimum cycle time in nanoseconds (ns)—here, 0.62 ns, which corresponds to a data rate of 1600 MHz (DDR4-3200). For older parts, “-125” meant 1.25 ns = DDR-800. The trailing “E” specifies the CL (CAS latency) and timing table, e.g., CL22 for DDR4-3200. Speed grade mismatches can cause system instability or failure to boot.
: Get detailed timing and configuration data for a full module. 2. Standard Part Number Breakdown (DRAM) If you see -40 anywhere in the suffix,
This section tells you the total capacity and the architecture of the memory.
The Ultimate Guide to the Micron Memory Part Number Decoder In the world of high-performance computing, the string of characters etched onto a RAM chip or printed on an SSD label isn't just a serial number—it’s a dense, encoded biography of the hardware. Whether you are a system builder, an overclocker, or a curious tech enthusiast, understanding the Micron part number decoder
1 Gigabyte depth x 8-bit bus width (8Gb total chip density)