Part Number Decoder - Micron Memory

A module marked MTA8ATF1G64AZ – the 1G64 means 8GB module (1G x 64 bits). But a discrete chip MT40A1G16 is only 1Gb (128MB). Context matters.

Notes:

Apply the appropriate product-line-specific table or Micron datasheet mapping for exact meanings.

Let us dissect the DRAM example: MT40A1G16RC-062E:B

1. Prefix – The Manufacturer Identifier
The initial “MT” is the universal prefix for Micron Technology. This distinguishes Micron parts from those of Samsung (K4…), SK Hynix (H5…), or other vendors.

2. Product Family and Voltage
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.

3. Density and Organization
“1G16” splits into two parts: density and width. “1G” means 1 gigabit (Gb) of total memory. However, DRAM chips are often organized as “1G x 16,” where “16” indicates the device width in bits (DQ pins). A “16” yields a 16-bit-wide interface. Other common widths: 4, 8, or 32. Multiplying density by width confirms total capacity: 1Gb × 16 = 16Gb per chip? Wait—caution: In Micron’s notation, “1G16” actually means a 16-bit-wide device with a total density of 16 gigabits (because 1G refers to the number of words, and 16 bits per word). More precisely, it is 1G words × 16 bits = 16 Gb. For a designer building a 64-bit DIMM, four such chips would be needed.

4. Package and Ball Configuration
“RC” is a package designator. “R” often stands for a 78-ball BGA (for x16 DDR4), while “C” may specify the ball map or lead-free status. Other letters indicate different ball counts or package types (e.g., “U” for 96-ball BGA). This field ensures physical compatibility with PCB footprints.

5. Speed Grade (The Performance Key)
“-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.

6. Revision and Special Flags
The colon and “B” denote the die revision. This is crucial for tracking errata, power changes, or timing improvements. Revision letters are sequential (A, B, C…). Sometimes an “IT” appears before the revision, signifying Industrial Temperature range (-40°C to +95°C) instead of Commercial (0°C to +95°C). An “A” at the end might indicate automotive grade.

Micron’s part numbering system is logical, but it’s dense. Once you memorize the prefix (MT40A = DDR4, MT53E = LPDDR4) and the speed codes (-062E = 3200), you’ll read these like a native.

Pro move: Bookmark Micron’s official Part Marking Decoder (free, no login required). Enter your string, and it spits out density, speed, voltage, and a direct datasheet link.

Have a mystery part number? Drop it in the comments—let’s decode it together.

Further Reading:

Micron uses a highly structured part numbering system to identify memory components and modules. Because physical chips are often too small for full part numbers, Micron also utilizes a five-digit FBGA Code (also known as a D9 code) as an abbreviated identifier. Key Decoding Tools

FBGA Part Marking Decoder: The primary tool for translating 5-digit chip markings (e.g., "D9VPP") into full Micron Part Numbers (MPN).

Serial Presence-Detect (SPD) Lookup: Allows users to find technical specs by entering a DRAM module part number.

Cross-Reference Tools: Useful for finding compatible replacements for DRAM and LPDRAM components. DRAM Component Decoding (Structure)

A typical component part number (e.g., MT40A1G8SA-062E:E) follows this general template: Prefix MT Micron Technology. Product Family 40 Technology type (40=DDR4, 62=LPDDR5, 41=DDR3). Voltage A Operating voltage (A=1.2V, F=1.1V for LPDDR5). Configuration 1G8 Density and width (e.g., 1 Gig x 8). Package Code SA Physical package type and lead-free status. Speed Grade -062E Maximum clock frequency or data rate. Temp / Status IT Operating environment (IT=Industrial, AT=Automotive). Die Revision :E The design version of the silicon. DDR5 Module Part Numbering System - Micron Technology micron memory part number decoder

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

is the key to identifying a component's generation, speed, and capabilities at a glance. The Challenge: Marketing Part Numbers vs. FBGA Codes

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.,

) laser-etched directly onto the tiny memory chips because the full MPN won't fit. To bridge this gap, you can use the official Micron FBGA and Component Marking Decoder

. Simply enter the 5-digit code to reveal the full part number and technical specifications. Breaking Down a Micron Part Number

While each product family (DDR4, DDR5, NAND) has its own specific logic, most follow a standardized structure: 1. The Core Prefix: MT Every Micron part begins with , which stands for "Micron Technology". 2. Product Family The numbers following "MT" identify the technology type: DDR4 SDRAM DDR3 SDRAM DDR5 SDRAM (Current generation) NAND Flash Solid State Drive (SSD) 3. Configuration and Density

After the product family comes the capacity and width. For example, indicates a density of 512 Megabits with a 16-bit wide bus. 4. Speed Bins and Latency The segment after the hyphen (e.g., ) tells you the performance rating. Refers to DDR4-2400 (1200 MHz). Common in DDR5, indicating specific JEDEC speed bins. 5. Die Revision (The "Binning" Secret) The letter at the very end (e.g., Die Revision

. For overclockers, this is the most critical part. Certain revisions, like the legendary (D-die) or

(E-die), are famous for their ability to handle higher frequencies and tighter timings than standard chips. Interactive and Advanced Tools

If you are looking for more than just a manual lookup, Micron provides specialized resources: Design tools | Micron Technology Inc.

Decoding Micron memory can be tricky because the number physically printed on the chip (the

) is almost never the actual part number. To find the full specifications, you have to "translate" that code first. Step 1: Find the 5-Digit FBGA Code

Because memory chips are so small, Micron uses an abbreviated code instead of the full part number. Look for a 5-digit alphanumeric code on the chip. It is usually the second or third row It often starts with Step 2: Use the Official Decoder

Once you have that 5-digit code, you can get the full part number (which usually starts with ) using Micron's official tool: Micron FBGA Part Marking Decoder

: Enter your 5-digit code in the "FBGA Code" field to reveal the full MT part number. Step 3: Decode the Full Part Number (The "MT" Code) Once you have the full part number (e.g., MT40A512M16LY-083R:H ), here is how to read it: Micron Technology Product type (e.g., 40 = DDR4, 60 = DDR5, 41 = DDR3) Operating voltage (e.g., A = 1.2V) 512 Megabits x 16-bit width (8Gb total) Physical package code (e.g., 96-ball FBGA) Speed grade (e.g., -083 refers to DDR4-2400) Design generation/Die revision (e.g., H-die) Useful Deep-Dive Resources For Desktop/Laptop RAM: Micron Module Part Numbering Guide (PDF) explains how to decode entire RAM sticks (DIMMs/SO-DIMMs). For Individual Chips: DRAM Component Part Numbering System covers raw chips like DDR4, DDR5, and LPDDR. If you are looking at a hard drive, use the Micron SSD Part Numbering Guide Do you have a specific code from a chip that you're trying to identify right now? FBGA and part decoder | Micron Technology Inc.

Micron memory part numbers are comprehensive codes that reveal specific technical details about a component, such as its technology, density, and speed. Because physical chips are often too small for full part numbers, Micron also uses 5-digit FBGA codes for identification. 🛠️ Official Decoding Tools

The most reliable way to identify a component is through official Micron Design Tools.

FBGA/Part Marking Decoder: Use the FBGA Parts Decoder to convert the 5-digit code on a chip (e.g., D9WFL) into a full part number. A module marked MTA8ATF1G64AZ – the 1G64 means

SPD Lookup: For memory modules, the SPD Part Number Lookup provides Serial Presence-Detect data essential for BIOS configuration.

Cross-Reference: If you are switching from a competitor, the DRAM Cross-Reference Tool helps find the Micron equivalent. 🔢 Understanding the Part Number Structure

Micron's full part numbers (e.g., MT40A512M16LY-062E:E) follow a hierarchical format. Detailed guides are available for different product families. Common Memory Prefixes & Codes MT: Stands for Micron Technology. Product Family: 40: DDR4 SDRAM 41: DDR3 SDRAM 47: DDR2 SDRAM 60: GDDR6

Voltage: Typically indicated by a letter (e.g., A for 1.2V in DDR4). Key Identification Guides

DRAM Modules: Refer to the DDR5 Module Part Numbering System or the Legacy DDR4/DDR3/DDR2 Guide for detailed breakdowns of speed bins and configurations.

Storage: Use the SSD Part Numbering System to identify drive interfaces and NAND types.

NOR Flash: Specific details for flash memory can be found in the Serial NOR Flash Guide. 💡 Quick Tips for Identification

Locating the Code: On FBGA chips, look for the second 5-digit code, usually starting with D, C, or Z. Community resources like Reddit's Overclocking Wiki can help identify popular enthusiast chips.

The "TR" Suffix: Often found at the end of a part number (e.g., MT...-0SIT TR), this simply indicates "Tape and Reel" packaging for shipping, as noted on the DigiKey TechForum.

Marking Variations: Full part numbers are often found on stickers on the module, while abbreviated codes are laser-etched directly onto the individual ICs (integrated circuits). If you'd like to dive deeper, I can help you: Decode a specific part number you currently have.

Compare two different speed bins to see which is better for your build. Find the datasheet for a specific Micron component. Which of these would be most helpful for your project?

Understanding the Micron Memory Part Number Decoder Micron Technology utilizes a sophisticated part numbering system that provides detailed specifications for every memory component, from consumer DRAM to enterprise SSDs. Because physical space on a chip is limited, Micron also uses abbreviated FBGA codes (often starting with "D9") to identify parts on the manufacturing floor. 1. Decoding FBGA Marking Codes

Most Micron memory chips don't have the full part number printed on them. Instead, they use a 5-digit FBGA code.

The "D9" Code: Commonly found on the bottom line of text on a chip, these 5-character codes (e.g., D9WFL) are essential for finding the actual part number.

Official Decoder Tool: You can translate these codes back into full part numbers using the Micron FBGA and Component Marking Decoder. 2. Micron DRAM Part Numbering System

A standard Micron DRAM part number (e.g., MT40A1G8SA-062E:E) 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

Micron’s NAND Flash uses a slightly different prefix and structure (e.g., MT29F): MT29F: Standard Single-Supply NAND Flash. Density: Indicated by codes like 1G, 8G, or 128G.

Mark/Bit Cell: Identifies the technology, such as A for SLC (Single Level Cell). Have a mystery part number

Speed Grade: For high-speed NAND (MT29H), this defines the transfer rate (e.g., 15 = 133 MT/s). 4. Essential Tools & Resources

To accurately identify and cross-reference Micron parts, use these official resources: FBGA and part decoder | Micron Technology Inc.

Understanding Micron’s complex alphanumeric part numbers is essential for ensuring hardware compatibility. Because Micron memory chips are often too small for full part numbers, the company uses a system of FBGA codes on the physical hardware that maps back to a comprehensive Marketing Part Number (MPN). The Two-Step Decoding Process 1. Decoding FBGA Codes (Hardware Level)

If you are looking at a physical chip, you will likely see a 5-digit alphanumeric code (e.g., "D9VPP") rather than a full part number.

Locate the Code: It is usually the second line of text on the chip, often starting with "D9", "C9", or "Z9".

Use the Tool: 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

), you can decode its specifications using Micron's standardized numbering systems. Example Code Manufacturer MT Micron Technology Product Family 40 DDR4 SDRAM (41=DDR3, 42=LPDDR2) Voltage A 1.2V (L=1.35V for DDR3L) Density/Org 512M16 512 Megabits depth x 16-bit width Package Code LY Specific FBGA package type Speed Grade -083R Clock speed/Latency (e.g., DDR4-2400) Die Revision :H Design iteration of the silicon Key Category Identifiers

Micron uses different prefixes and numerical blocks for different product categories: FBGA and part decoder | Micron Technology Inc.

This paper outlines the technical framework and methodology for decoding Micron Technology's memory part numbering systems. Technical Analysis: Micron Memory Part Number Decoding 1. Introduction to Micron Part Numbering

Micron Technology utilizes a sophisticated alphanumeric coding system to specify the architecture, performance, and physical characteristics of its semiconductor products. These part numbers serve as a compact data sheet, allowing engineers and procurement specialists to identify specific memory technologies without full documentation. 2. The Relationship Between Markings and Part Numbers

Due to physical space constraints on small components, Micron often prints an abbreviated FBGA Code (e.g., a 5-digit code starting with D9, C9, or Z9) instead of the full marketing part number. Production Parts: Typically use D9 codes. Engineering Samples: Typically use Z9 codes.

Internal/Crucial: C9 codes are often used for modules sold under the Crucial brand. 3. Decoding Framework for DRAM Components

Micron's DRAM Component Part Numbering System typically follows a standard sequence (e.g., MT40A1G8SA-075:E): Example Codes Prefix Manufacturer MT = Micron Technology Family Memory Type 40 = DDR4; 41 = DDR3; 60 = LPDDR5 Voltage Operating Volts A = 1.2V; K = 1.35V; L = 1.5V Density Storage Capacity 1G8 = 8Gb (1Gb x 8 configuration) Speed Clock/Data Rate -075 = 2666 MT/s; -062E = 3200 MT/s Revision Die Generation :E, :F, or :A (Designates the design shrink) 4. Decoding NAND Flash Components NAND Flash parts (e.g., MT29F32G08ABAAA ) focus on internal organization and bit density: FBGA and part decoder | Micron Technology Inc.

Here’s a helpful guide to decoding Micron memory part numbers (for DRAM, NAND, and DDR modules). Micron (which includes the Crucial brand) uses a structured numbering system. Once you understand the key fields, you can identify density, speed, generation, package, and more.

NAND Flash part numbers are distinct and often longer, typically starting with MT29 or MT followed by 'F'.

Format: MT Type Family Density Device Block Voltage Package Temp

This field tells you total capacity and bit organization.

Pro tip: To find total module capacity: (density per chip × number of chips) / 8. But the easier way: look at the number before the letter G. 2G72 is a 16GB module when using modern DDR4 (2G x 72 bits = 16GB). Actually, let's correct: 2G = 2G Bytes? No — in Micron’s lexicon, 2G72 means the module uses 2Gb chips x 72 = 144Gb total / 8 = 18GB? This is confusing.

Better to rely on Micron’s official capacity decoder:

So 2G72 in our example = 16GB module.