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Technical Data Sheet
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DT4121A — DISPLAY,OPTOELECTRONIC

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

DT4121A: DISPLAY,OPTOELECTRONIC.

The DISPLAY,OPTOELECTRONIC is a the manufacturer industrial component. Key specifications include overall_width: 1.476 INCHES NOMINAL IN, overall_length: 5.709 INCHES NOMINAL IN, overall_diameter: 1.350 INCHES NOMINAL IN, end_item_identification: ALT2 FRENCH AIR FORCE, character_quantity_per_line: 21 LOCATION NOT OTHERWISE SPECIFIED. This part is cataloged in the U.S.

Government catalog under NSN 5980-01-322-7655, 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
DT4121A
NSN: 5980-01-322-7655
FSC: 5980 — Optoelectronic Devices and Associated Hardware
CAGE: 94988 — COOPER INDUSTRIES INC CHAMPION AVIATION PRODUCTS (USA)
SPECIFICATIONS
overall_width1.476 INCHES NOMINAL IN
overall_length5.709 INCHES NOMINAL IN
overall_diameter1.350 INCHES NOMINAL IN
special_featuresPART OF INCANDESCENT DISPLAY FOR FRENCH FIGHTER;3 SECTIONS;TOP BLOCK 3 WIRE LEADS;LOWER BLOCKS;2 DIGIT 2 LEADS & 4 DIG.2 LEADS;FILTERS GREEN & ACRYLIC;3 MTG HOLES
end_item_identificationALT2 FRENCH AIR FORCE
character_quantity_per_line21 LOCATION NOT OTHERWISE SPECIFIED
NSN5980-01-322-7655
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available DISPLAY,OPTOELECTRONIC TITLE COMPONENT PN DT4121A MFR DISPLAY,OPTOELECTRONIC
KEY FEATURES
•
CHARACTER QUANTITY PER LINE: 21 LOCATION NOT OTHERWISE SPECIFIED
•
OVERALL DIAMETER: 1.350 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
CHARACTER QUANTITY PER LINE21 LOCATION NOT OTHERWISE SPECIFIED
OVERALL DIAMETER1.350 INCHES NOMINAL IN
OVERALL LENGTH5.709 INCHES NOMINAL IN
OVERALL WIDTH1.476 INCHES NOMINAL IN
SPECIAL FEATURESPART OF INCANDESCENT DISPLAY FOR FRENCH FIGHTER;3 SECTIONS;TOP BLOCK 3 WIRE LEADS;LOWER BLOCKS;2 DIGIT 2 LEADS & 4 DIG.2 LEADS;FILTERS GREEN & ACRYLIC;3 MTG HOLES
END ITEM IDENTIFICATIONALT2 FRENCH AIR FORCE
OTHER ITEMS IN FSC 5980 — Optoelectronic Devices and Associated Hardware
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5980-00-005-9850 5980-00-007-7654 5980-00-008-5173 5980-00-009-3039 5980-00-010-1721 5980-00-019-1445 5980-00-027-8087 5980-00-028-3463
SUBSTITUTES & CROSS-REFERENCES 1
14230274Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Demilitarization required — critical (Q)
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FREQUENTLY ASKED QUESTIONS
What is DT4121A?
DT4121A is a DISPLAY,OPTOELECTRONIC.
What parts can replace DT4121A?
There is 1 known substitute for DT4121A: 14230274. Substitute compatibility should be verified for your specific system.
What is the NSN for DT4121A?
DT4121A is cataloged in the U.S. Government catalog under NSN 5980-01-322-7655. 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.