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Technical Data Sheet
J1403 ✓ 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 material: RUBBER SYNTHETIC TUBE, temp_rating: 100.0 CELSIUS SINGLE RESPONSE DEGC, vacuum_in_torr: 101.6, inside_diameter: 0.250 INCHES NOMINAL IN, outside_diameter: 0.562 INCHES NOMINAL IN, special_features: CUT ENDS OF HOSE SQUARE AND SMOOTH,SKIVE COVERS. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4720-00-230-6529, 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 J1403
NSN: 4720-00-230-6529
FSC: 4720
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialRUBBER SYNTHETIC TUBE
temp_rating100.0 CELSIUS SINGLE RESPONSE DEGC
vacuum_in_torr101.6
inside_diameter0.250 INCHES NOMINAL IN
outside_diameter0.562 INCHES NOMINAL IN
special_featuresCUT ENDS OF HOSE SQUARE AND SMOOTH,SKIVE COVERS
burst_test_pressure1200.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
end_item_identificationGRUMMAN A10 AIRCRAFT
inside_surface_conditionSMOOTH
media_for_which_designedAIR SINGLE RESPONSE
hydrostatic_test_pressure600.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
cross-sectional_shape_styleROUND
NSN4720-00-230-6529
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 J1403 MFR OEM 8GB —
KEY FEATURES
8GB Capacity
OUTSIDE DIAMETER: 1.190 INCHES NOMINAL IN
VACUUM IN TORR: 101.6
INSIDE SURFACE CONDITION: SMOOTH
MATERIAL: RUBBER ETHYLENE-PROPYLENE CLASS EPM TUBE
BURST TEST PRESSURE: 800.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
MINIMUM INSIDE BENDING RADIUS: 0.022 INCHES IN
LAYER COMPOSITION AND LOCATION: 1ST LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD AND 2ND LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD AND OUTER LAYER MOLDED RUBBER, ETHYLENE PROPYLENE
SPECIFICATION/STANDARD DATA: 81343-SAE J1403 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
OUTSIDE DIAMETER1.190 INCHES NOMINAL IN
VACUUM IN TORR101.6
INSIDE SURFACE CONDITIONSMOOTH
MATERIALRUBBER ETHYLENE-PROPYLENE CLASS EPM TUBE
BURST TEST PRESSURE800.0 POUNDS PER SQUARE INCH SINGLE RESPONSE LBS
MINIMUM INSIDE BENDING RADIUS0.022 INCHES IN
LAYER COMPOSITION AND LOCATION1ST LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD AND 2ND LAYER RUBBER IMPREGNATED BRAIDED COTTON CORD AND OUTER LAYER MOLDED RUBBER, ETHYLENE PROPYLENE
SPECIFICATION/STANDARD DATA81343-SAE J1403 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
MEDIA FOR WHICH DESIGNEDAIR SINGLE RESPONSE
END ITEM IDENTIFICATIONGRUMMAN A10 AIRCRAFT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
337-4665-001Interchangeable
interchangeable cross-reference
interchangeable
184-5075Interchangeable
interchangeable cross-reference
interchangeable
50673Interchangeable
interchangeable cross-reference
interchangeable
6200-2RSTAInterchangeable
interchangeable cross-reference
interchangeable
E1880Interchangeable
interchangeable cross-reference
interchangeable
1845Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J1403?
J1403 is a IBM 8GB (2x4GB) DDR2 Main Storage. It is classified as a MEMORY (RDIMM).
What parts can replace J1403?
There are 19 known substitutes for J1403: 337-4665-001, 184-5075, 50673 and 16 more. Substitute compatibility should be verified for your specific system.
Is J1403 still available?
J1403 is currently cancelled.
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