20
3
I know what are:
Hynix HMT351S6CFR8C-H9 4Gb (front view):
But I couldn't find anything about what 11 number and F3 mean. Could anybody help in understanding what it is?
Qeeet
Posted 2016-01-17T14:59:19.300
Reputation: 367
36
According to SK Hynix Product Document Label Info. DDR3:
11 is the SPD Revision - JEDEC SPD Revision Encoding and Additions level
(8)
F3 is the Gerber Revision - JEDEC Reference design file used for this design
JEDEC is the global leader in developing open standards for the microelectronics industry, with more than 3,000 volunteers representing nearly 300 member companies.
JEDEC brings manufacturers and suppliers together to participate in more than 50 committees and subcommittees, with the mission to create standards to meet the diverse technical and developmental needs of the industry.
Serial presence detect (SPD) is a standardized way to automatically access information about a memory module. Earlier 72-pin SIMMs included five pins that provided five bits of parallel presence detect (PPD) data, but the 168-pin DIMM standard changed to a serial presence detect to encode much more information.
When an ordinary modern computer is turned on, it starts by doing a power-on self-test (POST). Since about the mid-1990s, this process includes automatically configuring the hardware currently present. SPD is a memory hardware feature that makes it possible for the computer to know what memory is present, and what timings to use to access the memory.
The Gerber format is an open 2D binary vector image file format. It is the de facto standard used by printed circuit board (PCB) industry software to describe the printed circuit board images: copper layers, solder mask, legend, etc.
DavidPostill
Posted 2016-01-17T14:59:19.300
Reputation: 118 938
The brilliant answer, thanks! I spent quite a time looking into what these F1-F2-F3 mean... – sainr – 2019-10-31T22:35:21.523
This site lists F3 as being DDR3 RAM (Which is identified as PC3 also). Not sure there's any industry-standard naming convention on these parts. – Jonno – 2016-01-17T15:22:34.813
@Jonno SK Hynix have their over labelling convention - see my answer. – DavidPostill – 2016-01-17T15:38:51.533