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5278-100 — Power Supply Datasheet

✓ Verified by PartsTable
— · PSU
WHAT YOU NEED TO KNOW
Always quote matching pair — mixed wattage causes throttling Platinum/Titanium = higher efficiency = lower power cost over time
AC or DC input? Verify customer site power
PRODUCT OVERVIEW

The POWER SUPPLY,TEST S is a the manufacturer power supply unit built for continuous operation in enterprise server and storage platforms. Key specifications include connector_locking_method: BAYONET PIN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4920-00-980-0639, 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
5278-100
NSN: 4920-00-980-0639
FSC: 4920
CAGE: 03526 — INTEGRATED POWER SYSTEMS LLC (USA)
SPECIFICATIONS
Wattage—
Efficiency Rating—
Form Factor—
Hot-Plug—
Redundancy—
Input Voltage—
Output Power—
Platform—
connector_locking_methodBAYONET PIN
NSN4920-00-980-0639
COMPONENT DIAGRAM
PULL TAB AIRFLOW —W PLATINUM 100-240V~ 50/60Hz OEM BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | —W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU —W PN 5278-100 MFR OEM Platinum
TYPICAL APPLICATIONS
  • Server power supply replacement (failed or degraded)
  • Redundant power upgrade for high-availability
  • Power capacity upgrade for GPU or expansion configurations
  • Hot-swap power maintenance in production environments
  • Spare inventory for break-fix operations
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
BB4256InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
9W0572InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
5278InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
9177272InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7762895P7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
138957H1CInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5278-100?
5278-100 is a POWER SUPPLY,TEST S.
What parts can replace 5278-100?
There are 16 known substitutes for 5278-100: BB4256, 9W0572, 5278 and 13 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5278-100?
5278-100 is cataloged in the Federal Logistics Information System under NSN 4920-00-980-0639. 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: September 2026