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666527 ✓ Verified by PartsTable
Legrand · 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 MICROCIRCUIT,DIGITAL is a Legrand industrial component. Key specifications include material: STEEL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-708-6909, 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
666527
NSN: 2805-00-708-6909
FSC: 2805
CAGE: 58275 — SASCO INC CANADIAN DIV
SPECIFICATIONS
materialSTEEL
NSN2805-00-708-6909
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR MFR: Legrand MICROCIRCUIT,DIGITAL TITLE COMPONENT PN 666527 MFR Legrand MICROCIRCUIT,DIGITAL
KEY FEATURES
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
DT9378Interchangeable
interchangeable cross-reference
interchangeable
4M9378Interchangeable
interchangeable cross-reference
interchangeable
PMA-4M9378Interchangeable
interchangeable cross-reference
interchangeable
42378Interchangeable
interchangeable cross-reference
interchangeable
1D7039Interchangeable
Same NIIN cross-reference
interchangeable
42378DInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 666527?
666527 is a MICROCIRCUIT,DIGITAL manufactured by Legrand.
What parts can replace 666527?
There are 6 known substitutes for 666527: DT9378, 4M9378, PMA-4M9378 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 666527?
666527 is cataloged in the Federal Logistics Information System (FLIS) under NSN 2805-00-708-6909. 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