Global Standards for the Microelectronics Industry
Standards & Documents Search
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Document # | Date |
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DDR5 Registered Dual Inline Memory Module (RDIMM) Common StandardRelease Number: Version 2.00 |
JESD305A | Feb 2025 |
This standard defines the electrical and mechanical requirements for 288-position, 1.1 Volt (VDD and VDDQ), DDR5 Registered (RDIMM), Double Data Rate (DDR), Synchronous DRAM Dual In-Line Memory Modules (DIMM). These Registered DDR5 SDRAM DIMMs are intended for use in server, workstation, and database environments. A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Free download. Registration or login required. |
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DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card A AnnexRelease Number: Version 2.00 |
JESD305-R8-RCA | Feb 2025 |
This annex, JESD305-R8-RCA, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card A Annex, defines the design detail of x4, 2 Package Rank DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Registered Dual Inline Memory Module (RDIMM) Common Standard. A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Free download. Registration or login required. |
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DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card C AnnexRelease Number: Version 2.00 |
JESD305-R8-RCC | Feb 2025 |
This standard, JESD305-R8-RCC, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card C Annex, defines the design detail of x4, 1 Package Rank DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Registered Dual Inline Memory Module (RDIMM) Common Standard. A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Free download. Registration or login required. |
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DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card D AnnexRelease Number: Version 2.00 |
JESD305-R8-RCD | Feb 2025 |
This standard, JESD305-R8-RCD, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card D Annex, defines the design detail of x8, 1 Package Rank DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Registered Dual Inline Memory Module (RDIMM) Common Standard. A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Free download. Registration or login required. |
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DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card E AnnexRelease Number: Version 2.00 |
JESD305-R8-RCE | Feb 2025 |
This standard, JESD305-R8-RCE, DDR5 Registered Dual Inline Memory Module with 8-bit ECC (EC8 RDIMM) Raw Card E Annex, defines the design detail of x8, 2 Package Rank DDR5 RDIMM with 8-bit ECC. The common feature of DDR5 RDIMM, such as the connector pinout, can be found in the JESD305, DDR5 Registered Dual Inline Memory Module (RDIMM) Common Standard. A list of RAND License Assurance/Disclosure Forms is available to JEDEC members on the restricted Members' website. Non-members may obtain individual Assurance/Disclosure forms by requesting them from the JEDEC office. Free download. Registration or login required. |