PartsTable
Technical Data Sheet
PartsTable / MRO / 278A
278A ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-284-4353, 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→ 278A
NSN: 5960-00-284-4353
FSC: 5960
CAGE: 74970 — VIKING TECHNOLOGIES, LTD. (USA)
SPECIFICATIONS
Part Number278A
NSN5960-00-284-4353
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN 278A MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
MOUNTING FACILITY TYPE AND QUANTITY: 1 TWIST LOCK SINGLE MOUNTING FACILITY
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-421 FED SPEC SINGLE TREATMENT RESPONSE
•
SURFACE TREATMENT: CADMIUM
•
EIA ELECTRON TUBE ENVELOPE ACCOMMODATED: T5 1-2 5-1
•
MATERIAL: STEEL
•
OVERALL DIAMETER: 0.915 INCHES NOMINAL IN
•
STYLE DESIGNATOR: BAYONET TYPE
•
ACCOMMODATED ITEM SECURING DEVICE TYPE: FRICTION FASTENER
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY TYPE AND QUANTITY1 TWIST LOCK SINGLE MOUNTING FACILITY
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-421 FED SPEC SINGLE TREATMENT RESPONSE
SURFACE TREATMENTCADMIUM
EIA ELECTRON TUBE ENVELOPE ACCOMMODATEDT5 1-2 5-1
MATERIALSTEEL
OVERALL DIAMETER0.915 INCHES NOMINAL IN
STYLE DESIGNATORBAYONET TYPE
ACCOMMODATED ITEM SECURING DEVICE TYPEFRICTION FASTENER
OVERALL HEIGHT1.375 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
GGG-W-641 TY1CL1Interchangeable
interchangeable cross-reference
interchangeable
GGG-W-641Interchangeable
interchangeable cross-reference
interchangeable
TE0142Interchangeable
interchangeable cross-reference
interchangeable
BA111306Interchangeable
interchangeable cross-reference
interchangeable
278AInterchangeable
interchangeable cross-reference
interchangeable
MT66ARC5Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 278A?
278A is a TRANSFORMER,AUDIO FREQUENCY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 278A?
There are 8 known substitutes for 278A: GGG-W-641 TY1CL1, GGG-W-641, TE0142 and 5 more. Substitute compatibility should be verified for your specific system.
Is 278A still available?
278A is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026