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SR556 — AMPLIFIER-POWER SUPPLY

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

SR556: AMPLIFIER-POWER SUPPLY.

The AMPLIFIER-POWER SUPPLY is a the manufacturer power supply unit built for continuous operation in enterprise server and storage platforms. This part is cataloged in the U.S. Government catalog under NSN 4235-01-334-0986, 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
MRO→ MRO_GENERAL→ SR556
NSN: 4235-01-334-0986
NIINs: 013340986, 017144733
FSC: 4235 — Hazardous Material Spill Containment and Clean-up Equipment and Material
CAGE: 0AN94 — SORBENT PRODUCTS CO INC (USA)
SPECIFICATIONS
NSN4235-01-334-0986
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 SR556 MFR OEM Platinum
KEY FEATURES
•
BODY THICKNESS: 0.375 INCHES IN
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
TECHNICAL CHARACTERISTICS
OVERALL LENGTH19.000 INCHES IN
OVERALL WIDTH17.000 INCHES IN
SPECIAL FEATURESSIZE MAY VARY BUT MUST BE HEAVY WEIGHT
BODY THICKNESS0.375 INCHES IN
SUBSTITUTES & CROSS-REFERENCES 7
7404Reference document
Same NSN cross-reference
Reference document — Secondary reference
SR1825Reference document
Same NSN cross-reference
Reference document — Secondary reference
CA-SR100-25Reference document
Same NSN cross-reference
Reference document — Secondary reference
MSR-74Reference document
Same NSN cross-reference
Reference document — Secondary reference
PS-SSR5/56Reference document
Same NSN cross-reference
Reference document — Secondary reference
G118Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is SR556?
SR556 is a AMPLIFIER-POWER SUPPLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace SR556?
There are 7 known substitutes for SR556: 7404, SR1825, CA-SR100-25 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for SR556?
SR556 is cataloged in the U.S. Government catalog under NSN 4235-01-334-0986. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.