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Technical Data Sheet
PartsTable / MRO / N421B
N421B ✓ 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

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include end_item_identification: POWER METER MODEL 454A A, general_characteristics_item_description: COAXIAL WAVEGUIDE,TYPE N MALE FLANGE CONNECTOR,FREQUENCY RANGE 0.01GHZ TO 12.4GHZ,MAX PEAK POWER 30 WATTS GHz. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-929-4281, 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→ N421B
NSN: 6625-00-929-4281
FSC: 6625
CAGE: 11332 — GENERAL MICROWAVE CORPORATION DIV KRATOS MICROWAVE ELECTRONICS (USA)
SPECIFICATIONS
end_item_identificationPOWER METER MODEL 454A A
general_characteristics_item_descriptionCOAXIAL WAVEGUIDE,TYPE N MALE FLANGE CONNECTOR,FREQUENCY RANGE 0.01GHZ TO 12.4GHZ,MAX PEAK POWER 30 WATTS GHz
NSN6625-00-929-4281
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN N421B MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: COAXIAL WAVEGUIDE,TYPE N MALE FLANGE CONNECTOR,FREQUENCY RANGE 0.01GHZ TO 12.4GHZ,MAX PEAK POWER 30 WATTS GHz
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCOAXIAL WAVEGUIDE,TYPE N MALE FLANGE CONNECTOR,FREQUENCY RANGE 0.01GHZ TO 12.4GHZ,MAX PEAK POWER 30 WATTS GHz
END ITEM IDENTIFICATIONPOWER METER MODEL 454A A
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCOAXIAL WAVEGUIDE,TYPE N MALE FLANGE CONNECTOR,FREQUENCY RANGE 0.01GHZ TO 12.4GHZ,MAX PEAK POWER 30 WATTS GHz
END ITEM IDENTIFICATIONPOWER METER MODEL 454A A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
N430Interchangeable
interchangeable cross-reference
interchangeable
N436PC163Interchangeable
interchangeable cross-reference
interchangeable
N199PC163Interchangeable
interchangeable cross-reference
interchangeable
N4-2-1Interchangeable
interchangeable cross-reference
interchangeable
FFN836Interchangeable
interchangeable cross-reference
interchangeable
GR835LR3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N421B?
N421B is a RELAY,ELECTROMAGNETIC. It is classified as a MRO (MRO_GENERAL).
What parts can replace N421B?
There are 7 known substitutes for N421B: N430, N436PC163, N199PC163 and 4 more. Substitute compatibility should be verified for your specific system.
Is N421B still available?
N421B is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026