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Technical Data Sheet
PartsTable / MRO / D557
D557 ✓ 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 D557 is a the manufacturer industrial component. Key specifications include body_width: 2.000 INCHES MAXIMUM IN, body_height: 2.180 INCHES MINIMUM AND 2.220 INCHES MAXIMUM IN, overall_width: 4.875 INCHES NOMINAL IN, inclosure_type: FULLY INCLOSED, overall_height: 6.000 INCHES NOMINAL IN, overall_length: 7.688 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-553-8421, 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→ D557
NSN: 6625-00-553-8421
FSC: 6625
CAGE: 00531 — AVIONICS CORP OF AMERICA (USA)
SPECIFICATIONS
body_width2.000 INCHES MAXIMUM IN
body_height2.180 INCHES MINIMUM AND 2.220 INCHES MAXIMUM IN
overall_width4.875 INCHES NOMINAL IN
inclosure_typeFULLY INCLOSED
overall_height6.000 INCHES NOMINAL IN
overall_length7.688 INCHES NOMINAL IN
mounting_methodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
frequency_rating60.0 HERTZ NOMINAL SINGLE COMPONENT
special_featuresSTYLE DESIGNATOR:NO.60 IRREGULAR SHAPE FROM FIIG A03200
reliability_indicatorNOT ESTABLISHED
mounting_hole_diameter0.190 INCHES NOMINAL SINGLE GROUP IN
supplementary_featuresCROSS-SECTIONAL SHAPE STYLE:NO.195 IRREGULAR SHAPE FROM FIIG A03200
NSN6625-00-553-8421
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available D557 TITLE COMPONENT PN D557 MFR D557
KEY FEATURES
•
FREQUENCY RESPONSE RANGE: +100.000 TO 400.000 MEGAHERTZ
TECHNICAL CHARACTERISTICS (FLIS)
FREQUENCY RESPONSE RANGE+100.000 TO 400.000 MEGAHERTZ
OVERALL WIDTH4.875 INCHES NOMINAL IN
OVERALL LENGTH7.688 INCHES NOMINAL IN
OVERALL HEIGHT6.000 INCHES NOMINAL IN
FREQUENCY RESPONSE RANGE+100.000 TO 400.000 MEGAHERTZ
OVERALL WIDTH4.875 INCHES NOMINAL IN
OVERALL LENGTH7.688 INCHES NOMINAL IN
OVERALL HEIGHT6.000 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
27122HInterchangeable
interchangeable cross-reference
interchangeable
27155Interchangeable
interchangeable cross-reference
interchangeable
BB7223Interchangeable
interchangeable cross-reference
interchangeable
D557Interchangeable
interchangeable cross-reference
interchangeable
TS509URInterchangeable
interchangeable cross-reference
interchangeable
91B1008Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D557?
D557 is a D557. It is classified as a MRO (MRO_GENERAL).
What parts can replace D557?
There are 7 known substitutes for D557: 27122H, 27155, BB7223 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D557?
D557 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6625-00-553-8421. 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