Micron memory chips often do not display their full part numbers directly on the chip. Space constraints on compact FBGA (Fine-Pitch Ball Grid Array) packages mean only an abbreviated marking is printed on each component, which is completely different from the official part number. A typical Micron chip might show markings like “PPE39 7LW75 D9WDL” where only the second or third line of text is the identifying code. This is where a decoder is essential.
Reveals the total gigabits (Gb) and how the data is organized (e.g., x4, x8, or x16).
: Useful for finding compatible replacements for DRAM and LPDRAM components. DRAM Component Decoding (Structure)
: Look at the two-letter code right before the hyphen (e.g., SA , RC , SF ). This tells you the physical layout and grid spacing needed for motherboard compatibility.
Micron DRAM component part numbers follow a logical structure that identifies key specifications. A typical part number looks like: . MT: Micron Technology (Company Prefix)
Micron uses two distinct identification systems that often confuse users: Marketing Part Number (MPN): The full identifier (e.g., MT40A512M16LY-083R:H ). These are found on module labels and invoices. FBGA Code: A short, 5-digit alphanumeric code (e.g.,
A standard Micron DRAM part number (e.g., ) follows a specific logical structure: Description Prefix MT Micron Technology Technology 40 Product Family (e.g., 40=DDR4, 41=DDR3, 53=LPDDR4) Voltage A Operating Voltage (e.g., A=1.2V, K=1.35V) Density/Width 1G8 Chip Depth and Width (e.g., 1G x 8 bits) Speed Grade -062E Max Clock Frequency/Data Rate (e.g., -062E = 3200 MT/s) Revision :E Die Revision designator 3. NAND Flash Part Numbering
This section tells you how much data the chip holds and how the data moves. : This means the chip holds 4 Gigabits of data. 8 : This means the chip has an 8-bit data width. 4. Package and Die Revision
Micron offers supplemental guides for specific product categories: FBGA and part decoder | Micron Technology Inc.