PartsTable
Technical Data Sheet
PartsTable / MRO / A-666
A-666 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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

FILTER,RADIO FREQUENCY INTERFERE. Key specifications include material: ALUMINUM, body_width: 3.281 INCHES NOMINAL IN, body_height: 0.921 INCHES NOMINAL IN, body_length: 0.059 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN, overall_width: 3.812 INCHES NOMINAL IN, rating_method: WINDING TURNS SINGLE COMPONENT SINGLE PRIMARY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-271-2321, 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
MRO→ MRO_GENERAL→ A-666
NSN: 5915-00-271-2321
FSC: 5915
CAGE: 56662 — FREQUENCY SELECTIVE NETWORKS, INC. DBA FREQUENCY SELECTIVE NETWORKS INC (USA)
SPECIFICATIONS
materialALUMINUM
body_width3.281 INCHES NOMINAL IN
body_height0.921 INCHES NOMINAL IN
body_length0.059 INCHES MINIMUM AND 0.075 INCHES MAXIMUM IN
overall_width3.812 INCHES NOMINAL IN
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE PRIMARY
turn_quantity11 SINGLE COMPONENT SINGLE PRIMARY
inclosure_typeOPEN
overall_height0.968 INCHES NOMINAL IN
overall_length4.500 INCHES NOMINAL IN
mounting_methodTERMINAL SINGLE GROUP
style_designatorRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
NSN5915-00-271-2321
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available FILTER,RADIO FREQUENCY INTERFERE TITLE COMPONENT PN A-666 MFR FILTER,RADIO FREQUENCY
KEY FEATURES
•
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH: 2.500 INCHES NOMINAL IN
•
FUNCTIONAL TERMINAL TYPE AND QUANTITY: 1 TAB, SOLDER LUG OUTPUT SECOND FUNCTION
•
INCLOSURE TYPE: HERMETICALLY SEALED
•
STYLE DESIGNATOR: RECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
•
MAXIMUM DIELECTRIC WITHSTANDING DC VOLTAGE: 200.0 VOLTS AT SEA LEVEL
•
MAXIMUM VOLTAGE DROP PER FUNCTION: 0.56 VOLTS DC BLANK LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL WIDTH3.812 INCHES NOMINAL IN
DISTANCE BETWEEN CENTERLINES OF MOUNTING FACILITIES PARALLEL TO BODY WIDTH2.500 INCHES NOMINAL IN
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 TAB, SOLDER LUG OUTPUT SECOND FUNCTION
FUNCTIONAL TERMINAL TYPE AND QUANTITY1 TAB, SOLDER LUG INPUT FIRST FUNCTION
INCLOSURE TYPEHERMETICALLY SEALED
STYLE DESIGNATORRECTANGULAR TERMINAL/TERMINALS ON OPPOSITE SURFACES
MAXIMUM DIELECTRIC WITHSTANDING DC VOLTAGE200.0 VOLTS AT SEA LEVEL
MAXIMUM VOLTAGE DROP PER FUNCTION0.56 VOLTS DC BLANK LOCATION NOT OTHERWISE SPECIFIED
MOUNTING FACILITY TYPE AND QUANTITY4 UNTHREADED HOLE(S) LOCATION NOT OTHERWISE SPECIFIED
PRINCIPAL CIRCUITRY TYPE PER FUNCTIONINDUCTANCE-CAPACITANCE BLANK LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
06CP-6Interchangeable
interchangeable cross-reference
interchangeable
820X6Interchangeable
interchangeable cross-reference
interchangeable
13207E4702Interchangeable
interchangeable cross-reference
interchangeable
278-0444-070Interchangeable
interchangeable cross-reference
interchangeable
A-666Interchangeable
interchangeable cross-reference
interchangeable
999R0317 PC41Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-666?
A-666 is a FILTER,RADIO FREQUENCY INTERFERE. It is classified as a MRO (MRO_GENERAL).
What parts can replace A-666?
There are 8 known substitutes for A-666: 06CP-6, 820X6, 13207E4702 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-666?
A-666 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5915-00-271-2321. 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