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Technical Data Sheet
PartsTable / MEMORY / AE77N
AE77N ✓ 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 8GB (2x4GB) DDR2 Main Storage. Key specifications include head_style: FLAT, stem_style: GROOVED, head_height: 0.1560 INCHES MINIMUM AND 0.1710 INCHES MAXIMUM IN, neck_radius: 0.2500 INCHES NOMINAL IN, stem_length: 3.7795 INCHES MINIMUM AND 3.8045 INCHES MAXIMUM IN, groove_width: 0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-447-9114, 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→ AE77N
NSN: 2805-00-447-9114
FSC: 2805
CAGE: 66289 — WISCONSIN MOTORS, LLC (USA)
SPECIFICATIONS
head_styleFLAT
stem_styleGROOVED
head_height0.1560 INCHES MINIMUM AND 0.1710 INCHES MAXIMUM IN
neck_radius0.2500 INCHES NOMINAL IN
stem_length3.7795 INCHES MINIMUM AND 3.8045 INCHES MAXIMUM IN
groove_width0.0950 INCHES MINIMUM AND 0.1050 INCHES MAXIMUM IN
stem_diameter0.3080 INCHES MINIMUM AND 0.3090 INCHES MAXIMUM IN
chamfer_length0.0312 INCHES NOMINAL IN
groove_diameter0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN
outside_diameter1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
seat_angle_in_deg45.0
carbon_relief_grooveNOT INCLUDED
NSN2805-00-447-9114
COMPONENT DIAGRAM
ECC 8GB 2Rx4 PC4 — RDIMM OEM NOTCH ~133.35 mm DDR4 RDIMM | 8GB | — | PC4 Notch position = DDR4 generation | DDR3/DDR4/DDR5 physically incompatible RDIMM = Registered (servers) | LRDIMM = Load-Reduced | UDIMM = Unbuffered TITLE DDR4 RDIMM PN AE77N MFR OEM 8GB —
KEY FEATURES
•
8GB Capacity
•
NECK RADIUS: 0.2500 INCHES NOMINAL IN
•
HEAD HEIGHT: 0.1560 INCHES MINIMUM AND 0.1710 INCHES MAXIMUM IN
•
DISTANCE FROM GROOVE TO STEM END: 0.2450 INCHES NOMINAL IN
•
STEM STYLE: GROOVED
•
METALLIC HARDNESS RATING AND LOCATION: 50.0 ROCKWELL C MINIMUM TIP
•
FSC APPLICATION DATA: GASOLINE ENGINE
•
STEM LENGTH: 3.7795 INCHES MINIMUM AND 3.8045 INCHES MAXIMUM IN
•
GROOVE DIAMETER: 0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
NECK RADIUS0.2500 INCHES NOMINAL IN
HEAD HEIGHT0.1560 INCHES MINIMUM AND 0.1710 INCHES MAXIMUM IN
DISTANCE FROM GROOVE TO STEM END0.2450 INCHES NOMINAL IN
STEM STYLEGROOVED
METALLIC HARDNESS RATING AND LOCATION50.0 ROCKWELL C MINIMUM TIP
FSC APPLICATION DATAGASOLINE ENGINE
STEM LENGTH3.7795 INCHES MINIMUM AND 3.8045 INCHES MAXIMUM IN
GROOVE DIAMETER0.2670 INCHES MINIMUM AND 0.2730 INCHES MAXIMUM IN
OUTSIDE DIAMETER1.1200 INCHES MINIMUM AND 1.1300 INCHES MAXIMUM IN
CHAMFER ANGLE IN DEG45.0
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
27213Interchangeable
interchangeable cross-reference
interchangeable
J1403Interchangeable
interchangeable cross-reference
interchangeable
184-5Interchangeable
interchangeable cross-reference
interchangeable
1630L19-002Interchangeable
interchangeable cross-reference
interchangeable
MDN2532-11Interchangeable
interchangeable cross-reference
interchangeable
4477Interchangeable
IBM 8GB (2x4GB) DDR2 Main Storage
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AE77N?
AE77N is a IBM 8GB (2x4GB) DDR2 Main Storage. It is classified as a MEMORY (RDIMM).
What parts can replace AE77N?
There are 16 known substitutes for AE77N: 27213, J1403, 184-5 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AE77N?
AE77N is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-447-9114. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026