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PartsTable / COMPONENT / 290-1278P1
290-1278P1 ✓ Verified by PartsTable
— · COMPONENT
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 ELECTRON TUBE is a the manufacturer industrial component. Key specifications include tube_type: DIODE, special_features: MFTR. CLASSIFICATION:HALF-WAVE RECTIFIER-SHUNT; ENVELOPE MATERIAL:GLASS, envelope_medium_type: VACUUM.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-503-0254, 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
290-1278P1
NSN: 5960-00-503-0254
FSC: 5960
CAGE: 49956 — RAYTHEON COMPANY DIV CORP (USA)
SPECIFICATIONS
tube_typeDIODE
special_featuresMFTR. CLASSIFICATION:HALF-WAVE RECTIFIER-SHUNT; ENVELOPE MATERIAL:GLASS
envelope_medium_typeVACUUM
NSN5960-00-503-0254
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ELECTRON TUBE TITLE COMPONENT PN 290-1278P1 MFR ELECTRON TUBE
KEY FEATURES
•
TUBE TYPE: DIODE
•
ENVELOPE MEDIUM TYPE: VACUUM
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESMFTR. CLASSIFICATION:HALF-WAVE RECTIFIER-SHUNT; ENVELOPE MATERIAL:GLASS
TUBE TYPEDIODE
ENVELOPE MEDIUM TYPEVACUUM
VERIFIED SUBSTITUTES & CROSS-REFERENCES 26
6303Interchangeable
interchangeable cross-reference
interchangeable
STKX109Interchangeable
interchangeable cross-reference
interchangeable
26203-2Interchangeable
interchangeable cross-reference
interchangeable
SEEPIDInterchangeable
interchangeable cross-reference
interchangeable
B16.23Interchangeable
interchangeable cross-reference
interchangeable
SEE ITEM DESCRIPTIONInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 290-1278P1?
290-1278P1 is a ELECTRON TUBE.
What parts can replace 290-1278P1?
There are 26 known substitutes for 290-1278P1: 6303, STKX109, 26203-2 and 23 more. Substitute compatibility should be verified for your specific system.
Is 290-1278P1 still available?
290-1278P1 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