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PartsTable / COMPONENT / 661820
661820 ✓ 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 REACTOR is a the manufacturer industrial component. Key specifications include body_width: 1.140 INCHES MINIMUM AND 1.190 INCHES MAXIMUM IN, body_length: 1.938 INCHES NOMINAL IN, rating_method: ELECTRICAL SINGLE COMPONENT SINGLE WINDING, inclosure_type: HERMETICALLY SEALED, overall_length: 2.454 INCHES NOMINAL IN, inductance_type: MECHANICALLY ADJUSTABLE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-487-7913, 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
661820
NSN: 5950-00-487-7913
FSC: 5950
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
body_width1.140 INCHES MINIMUM AND 1.190 INCHES MAXIMUM IN
body_length1.938 INCHES NOMINAL IN
rating_methodELECTRICAL SINGLE COMPONENT SINGLE WINDING
inclosure_typeHERMETICALLY SEALED
overall_length2.454 INCHES NOMINAL IN
inductance_typeMECHANICALLY ADJUSTABLE
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating820.0 HERTZ NOMINAL SINGLE COMPONENT
special_featuresINTERNAL SHIELD BROUGHT OUT TO TERMINAL
winding_quantity1 SINGLE COMPONENT
inductance_rating1.15 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
nominal_thread_size0.138 INCHES SINGLE GROUP IN
NSN5950-00-487-7913
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available REACTOR TITLE COMPONENT PN 661820 MFR REACTOR
KEY FEATURES
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
•
BODY LENGTH: 1.938 INCHES NOMINAL IN
•
DISTANCE BETWEEN MOUNTING FACILITY CENTERS: 1.343 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
TERMINAL TYPE AND QUANTITY: 3 WIRE HOOK
•
NOMINAL THREAD SIZE: 0.138 INCHES SINGLE GROUP IN
•
RATING METHOD: ELECTRICAL SINGLE COMPONENT SINGLE WINDING
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
BODY LENGTH1.938 INCHES NOMINAL IN
DISTANCE BETWEEN MOUNTING FACILITY CENTERS1.343 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
TERMINAL TYPE AND QUANTITY3 WIRE HOOK
NOMINAL THREAD SIZE0.138 INCHES SINGLE GROUP IN
OVERALL LENGTH2.454 INCHES NOMINAL IN
RATING METHODELECTRICAL SINGLE COMPONENT SINGLE WINDING
SPECIAL FEATURESINTERNAL SHIELD BROUGHT OUT TO TERMINAL
INCLOSURE TYPEHERMETICALLY SEALED
INDUCTANCE RATING1.15 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
4397Interchangeable
interchangeable cross-reference
interchangeable
8800-574980-3Interchangeable
interchangeable cross-reference
interchangeable
L532000401Interchangeable
interchangeable cross-reference
interchangeable
2N3980Interchangeable
interchangeable cross-reference
interchangeable
2549118Interchangeable
interchangeable cross-reference
interchangeable
9157507Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 661820?
661820 is a REACTOR.
What parts can replace 661820?
There are 9 known substitutes for 661820: 4397, 8800-574980-3, L532000401 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 661820?
661820 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-487-7913. 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