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L4871 ✓ 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: PULSE MODUATOR, special_features: WEAPON SYSTEM ESSENTIAL, end_item_identification: ADVANCED AIR TRAFFIC CONTR.&LAND.SYS (ATCALS) 404L, nondefinitive_spec/std_data: 5949A TYPE A, criticality_code_justification: FEAT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-542-7181, 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
L4871
NSN: 5960-00-542-7181
FSC: 5960
CAGE: 89146 — STELLANT SYSTEMS INC (USA)
SPECIFICATIONS
tube_typePULSE MODUATOR
special_featuresWEAPON SYSTEM ESSENTIAL
end_item_identificationADVANCED AIR TRAFFIC CONTR.&LAND.SYS (ATCALS) 404L
nondefinitive_spec/std_data5949A TYPE A
criticality_code_justificationFEAT
NSN5960-00-542-7181
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available ELECTRON TUBE TITLE COMPONENT PN L4871 MFR ELECTRON TUBE
KEY FEATURES
•
TUBE TYPE: PULSE MODUATOR
•
NONDEFINITIVE SPEC/STD DATA: 5949A TYPE A
TECHNICAL CHARACTERISTICS (FLIS)
TUBE TYPEPULSE MODUATOR
NONDEFINITIVE SPEC/STD DATA5949A TYPE A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
59-49AInterchangeable
interchangeable cross-reference
interchangeable
100099-8Interchangeable
interchangeable cross-reference
interchangeable
430601036Interchangeable
interchangeable cross-reference
interchangeable
PL5949Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-1/1100Interchangeable
interchangeable cross-reference
interchangeable
MILE1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is L4871?
L4871 is a ELECTRON TUBE.
What parts can replace L4871?
There are 11 known substitutes for L4871: 59-49A, 100099-8, 430601036 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for L4871?
L4871 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5960-00-542-7181. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026