PartsTable
Technical Data Sheet
PartsTable / MEMORY / 40R3H
40R3H ✓ Verified by PartsTable
— · MEMORY · RDIMM
WHAT YOU NEED TO KNOW
Memory is a hot market right now. DDR5 and DDR4 are extremely volatile with data centers driving availability to extreme lows. Always validate machine type and model. Remember: all RAM is Hynix, Samsung, or Micron underneath OEM labels — use that to find alternatives. Key checks: Check OEM alternatives — all RAM is Hynix/Samsung/Micron underneath. Double-check what you're quoting in volatile market.
HOT market — DDR5/DDR4 extremely volatile
PRODUCT OVERVIEW

IBM 4GB (2 x 2GB DDR2) Main Storage. Key specifications include phase: THREE, length: 19.0 MILLIMETERS NOMINAL MM, material: STEEL CORROSION RESISTING OVERALL, thickness: 1.0 MILLIMETERS NOMINAL MM, duty_cycle: CONTINUOUS, major_width: 5.0 MILLIMETERS NOMINAL MM. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-230-6528, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
MEMORY→ RDIMM→ 40R3H
NSN: 4720-00-230-6528
FSC: 4720
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
phaseTHREE
length19.0 MILLIMETERS NOMINAL MM
materialSTEEL CORROSION RESISTING OVERALL
thickness1.0 MILLIMETERS NOMINAL MM
duty_cycleCONTINUOUS
major_width5.0 MILLIMETERS NOMINAL MM
ambient_temp50.0 CELSIUS DEGC
control_typeLOCAL OR REMOTE
hole_spacingEVENLY SPACED
hole_quantity2
overall_width26.000 INCHES NOMINAL IN
overall_height13.000 INCHES NOMINAL IN
NSN4720-00-230-6528
COMPONENT DIAGRAM
ECC 4GB 2Rx4 PC4 — RDIMM OEM NOTCH ~133.35 mm DDR4 RDIMM | 4GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN 40R3H MFR OEM 4GB —
KEY FEATURES
•
4GB Capacity
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
362AEInterchangeable
interchangeable cross-reference
interchangeable
4475Interchangeable
IBM 4GB (2 x 2GB DDR2) Main Storage
interchangeable
9129653Interchangeable
interchangeable cross-reference
interchangeable
99S12Interchangeable
interchangeable cross-reference
interchangeable
48241Interchangeable
interchangeable cross-reference
interchangeable
12X12X12SWDOM275Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy 40R3H?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 40R3H?
40R3H is a IBM 4GB (2 x 2GB DDR2) Main Storage. It is classified as a MEMORY (RDIMM).
What parts can replace 40R3H?
There are 22 known substitutes for 40R3H: 362AE, 4475, 9129653 and 19 more. Substitute compatibility should be verified for your specific system.
Is 40R3H still available?
40R3H is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 40R3H

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026