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Technical Data Sheet
PartsTable / COMPONENT / MPT400/C/BU-ONLY
MPT400/C/BU-ONLY ✓ 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 MPT400/C/BU-ONLY is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6240-01-344-9562, 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
MPT400/C/BU-ONLY
NSN: 6240-01-344-9562
FSC: 6240
CAGE: 88204 — GTE PRODUCTS CORP SYLVANIA MINIATURE LIGHTING DIV (USA)
SPECIFICATIONS
Part NumberMPT400/C/BU-ONLY
NSN6240-01-344-9562
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available MPT400/C/BU-ONLY TITLE COMPONENT PN MPT400/C/BU-ONLY MFR MPT400/C/BU-ONLY
KEY FEATURES
•
RATED AVERAGE LIFE: HOURS
•
BULB DESIGNATOR: BT-37
•
EMITTED LIGHT CHARACTERISTIC: WHITE
•
BASE STYLE: MOGUL SCREW
•
BULB STYLE: BT (BULGED TUBULAR)
•
BULB LIGHT TRANSMISSION CHARACTERISTIC: TRANSLUCENT
•
CRITICALITY CODE JUSTIFICATION: FEAT
TECHNICAL CHARACTERISTICS (FLIS)
RATED AVERAGE LIFEHOURS
OVERALL LENGTH11.500 INCHES NOMINAL11.500 INCHES NOMINAL IN
BULB DESIGNATORBT-37
EMITTED LIGHT CHARACTERISTICWHITE
BASE STYLEMOGUL SCREW
BULB STYLEBT (BULGED TUBULAR)
BULB LIGHT TRANSMISSION CHARACTERISTICTRANSLUCENT
CRITICALITY CODE JUSTIFICATIONFEAT
LIGHT OUTPUT RATING21000.000 LUMENS NOMINAL SINGLE RATING
WATTAGE RATING400.000 WATTS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
MS400/C/BUInterchangeable
interchangeable cross-reference
interchangeable
M59PK-R400/VBUInterchangeable
interchangeable cross-reference
interchangeable
62957Interchangeable
interchangeable cross-reference
interchangeable
49656Interchangeable
Same NIIN cross-reference
interchangeable
MS400/C/BU-ONLYInterchangeable
Same NIIN cross-reference
interchangeable
MVR400/C/VBUInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MPT400/C/BU-ONLY?
MPT400/C/BU-ONLY is a MPT400/C/BU-ONLY.
What parts can replace MPT400/C/BU-ONLY?
There are 7 known substitutes for MPT400/C/BU-ONLY: MS400/C/BU, M59PK-R400/VBU, 62957 and 4 more. Substitute compatibility should be verified for your specific system.
Is MPT400/C/BU-ONLY still available?
MPT400/C/BU-ONLY 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