PartsTable
Technical Data Sheet
PartsTable / MRO / A-21
A-21 ✓ 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 TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include special_features: BELTS,FAN, (MATCHED) A21, end_item_identification: FAN COIL ASSY, P/N FCA-22 TYPE III RH. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-297-3320, 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-21
NSN: 6625-01-297-3320
FSC: 6625
CAGE: 34280 — WAVETEK RF PRODUCTS, INC (USA)
SPECIFICATIONS
special_featuresBELTS,FAN, (MATCHED) A21
end_item_identificationFAN COIL ASSY, P/N FCA-22 TYPE III RH
NSN6625-01-297-3320
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN A-21 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
COMPONENT TYPE AND QUANTITY: 1 COVER AND 16 CAP AND 7 TRANSISTOR AND 1 CHASSIS AND 1 BASE AND 1 CRYSTAL AND 23 RESISTOR AND 2 DIODE AND 2 TRANSFORMER
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESCRYSTAL MTG BOARD;GENERATES MARKER;TEST SET ELECT. EQUIP.
COMPONENT TYPE AND QUANTITY1 COVER AND 16 CAP AND 7 TRANSISTOR AND 1 CHASSIS AND 1 BASE AND 1 CRYSTAL AND 23 RESISTOR AND 2 DIODE AND 2 TRANSFORMER
END ITEM IDENTIFICATION6625-01-125-3469 GENERATOR,SWEEP
SPECIAL FEATURESCRYSTAL MTG BOARD;GENERATES MARKER;TEST SET ELECT. EQUIP.
COMPONENT TYPE AND QUANTITY1 COVER AND 16 CAP AND 7 TRANSISTOR AND 1 CHASSIS AND 1 BASE AND 1 CRYSTAL AND 23 RESISTOR AND 2 DIODE AND 2 TRANSFORMER
END ITEM IDENTIFICATION6625-01-125-3469 GENERATOR,SWEEP
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
A21Upgraded Successor
successor cross-reference
successor
P-48230Interchangeable
interchangeable cross-reference
interchangeable
8503Interchangeable
interchangeable cross-reference
interchangeable
12B-1/2Interchangeable
interchangeable cross-reference
interchangeable
12WBInterchangeable
interchangeable cross-reference
interchangeable
146-92-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is A-21?
A-21 is a TRANSFORMER,AUDIO FREQUENCY. It is classified as a MRO (MRO_GENERAL).
What parts can replace A-21?
There are 14 known substitutes for A-21: A21, P-48230, 8503 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for A-21?
A-21 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-01-297-3320. 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