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Technical Data Sheet
100A21-120 ✓ 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 LAMP,INCANDESCENT is a the manufacturer industrial component. Key specifications include base_style: MEDIUM SCREW, bulb_style: A (ARBITRARY DESIGNATION), overall_length: 5.250 INCHES MAXIMUM IN, voltage_rating: 120.000 VOLTS NOMINAL, wattage_rating: 100.000 WATTS, bulb_designator: A-21. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6240-00-990-8191, 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
100A21-120
NSN: 6240-00-990-8191
FSC: 6240
CAGE: 06172 — MARVEL LAMP CO INC (USA)
SPECIFICATIONS
base_styleMEDIUM SCREW
bulb_styleA (ARBITRARY DESIGNATION)
overall_length5.250 INCHES MAXIMUM IN
voltage_rating120.000 VOLTS NOMINAL
wattage_rating100.000 WATTS
bulb_designatorA-21
burning_positionBASE DOWN TO HORIZONTAL
special_featuresLAMP 100A21/120V V
rated_average_lifeHOURS
light_center_length3.875 INCHES NOMINAL IN
light_output_rating1650.000 LUMENS NOMINAL SINGLE RATING
filament_designationCC-6 OR CC-8
NSN6240-00-990-8191
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available LAMP,INCANDESCENT TITLE COMPONENT PN 100A21-120 MFR LAMP,INCANDESCENT
KEY FEATURES
BULB STYLE: A (ARBITRARY DESIGNATION)
FILAMENT HEAVY DUTY SERVICE RATING: NOT RATED
EMITTED LIGHT CHARACTERISTIC: WHITE
BASE STYLE: MEDIUM SCREW
LIGHT CENTER LENGTH: 3.875 INCHES NOMINAL IN
LIGHT OUTPUT RATING: 1650.000 LUMENS NOMINAL SINGLE RATING
AVERAGE LIFE RATING IN HOURS: 750.0
TECHNICAL CHARACTERISTICS (FLIS)
BULB STYLEA (ARBITRARY DESIGNATION)
FILAMENT HEAVY DUTY SERVICE RATINGNOT RATED
OVERALL LENGTH5.250 INCHES MAXIMUM IN
EMITTED LIGHT CHARACTERISTICWHITE
BASE STYLEMEDIUM SCREW
LIGHT CENTER LENGTH3.875 INCHES NOMINAL IN
LIGHT OUTPUT RATING1650.000 LUMENS NOMINAL SINGLE RATING
AVERAGE LIFE RATING IN HOURS750.0
END ITEM IDENTIFICATIONWHIDBEY ISLAND CLASS LSD; USNS HENRY J. KAISER CLASS TAO; ADVANCED AIR TRAFFIC CONTR & LAND. SYS (ATCALS) 404L; STRATEGIC WEAPON SYSTEMS (POSEIDON AND TRIDENT)
BULB LIGHT TRANSMISSION CHARACTERISTICTRANSLUCENT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
100A21-120VInterchangeable
interchangeable cross-reference
interchangeable
100A21CLInterchangeable
interchangeable cross-reference
interchangeable
100A21CL120VInterchangeable
interchangeable cross-reference
interchangeable
100A21-120V-130VInterchangeable
Same NIIN cross-reference
interchangeable
100A21CL-120Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 100A21-120?
100A21-120 is a LAMP,INCANDESCENT.
What parts can replace 100A21-120?
There are 5 known substitutes for 100A21-120: 100A21-120V, 100A21CL, 100A21CL120V and 2 more. Substitute compatibility should be verified for your specific system.
Is 100A21-120 still available?
100A21-120 is currently cancelled.
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