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A639 — SEMICONDUCTOR DEVICE ASSEMBLY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A639: SEMICONDUCTOR DEVICE ASSEMBLY.

The SEMICONDUCTOR DEVICE ASSEMBLY is a the manufacturer industrial component. Key specifications include material: PLASTIC, overall_width: 7.171 INCHES MINIMUM AND 7.265 INCHES MAXIMUM IN, conductor_form: STRANDED ALL CONDUCTORS, overall_height: 1.782 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN, overall_length: 28.594 INCHES MINIMUM AND 28.656 INCHES MAXIMUM IN, voltage_rating: 5000.0 AC MAXIMUM RATED WORKING VOLTAGE ALL CONDUCTORS. This part is cataloged in the U.S.

Government catalog under NSN 5970-00-284-7900, 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
A639
NSN: 5970-00-284-7900
NIINs: 002847900, 004653182, 005538254, 009057202, 015060541
FSC: 5970 — Electrical Insulators and Insulating Materials
CAGE: 00531 — AVIONICS CORP OF AMERICA (USA)
SPECIFICATIONS
materialPLASTIC
overall_width7.171 INCHES MINIMUM AND 7.265 INCHES MAXIMUM IN
conductor_formSTRANDED ALL CONDUCTORS
overall_height1.782 INCHES MINIMUM AND 1.812 INCHES MAXIMUM IN
overall_length28.594 INCHES MINIMUM AND 28.656 INCHES MAXIMUM IN
voltage_rating5000.0 AC MAXIMUM RATED WORKING VOLTAGE ALL CONDUCTORS
inside_diameter0.187 INCHES NOMINAL IN
mounting_methodHOLE(S)
outside_diameter0.438 INCHES NOMINAL IN
special_featuresANALYZER TO COMPUTER,DB25(M) CONNECTOR TO 9PIN(F)
style_designatorBOX
termination_typeCLIP TERMINAL SECOND END ALL CONDUCTORS
NSN5970-00-284-7900
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available SEMICONDUCTOR DEVICE ASSEMBLY TITLE COMPONENT PN A639 MFR SEMICONDUCTOR DEVICE A
KEY FEATURES
•
STYLE DESIGNATOR: ROUND, FLAT
•
OUTSIDE DIAMETER: 0.438 INCHES NOMINAL IN
•
INSIDE DIAMETER: 0.187 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT0.025 INCHES NOMINAL IN
STYLE DESIGNATORROUND, FLAT
OUTSIDE DIAMETER0.438 INCHES NOMINAL IN
INSIDE DIAMETER0.187 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 3
302-2300-000Reference document
Same NSN cross-reference
Reference document — Secondary reference
SMD144561-17Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
302-2300-00Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is A639?
A639 is a SEMICONDUCTOR DEVICE ASSEMBLY.
What parts can replace A639?
There are 3 known substitutes for A639: 302-2300-000, SMD144561-17, 302-2300-00. Substitute compatibility should be verified for your specific system.
What is the NSN for A639?
A639 is cataloged in the U.S. Government catalog under NSN 5970-00-284-7900. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.