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278-0439-040 — TRANSFORMER,RADIO FREQUENCY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

278-0439-040: TRANSFORMER,RADIO FREQUENCY.

The TRANSFORMER,RADIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 1.091 INCHES MAXIMUM IN, body_height: 0.568 INCHES MAXIMUM IN, body_length: 2.170 INCHES MAXIMUM IN, rating_method: WINDING TURNS SINGLE COMPONENT SINGLE SECONDARY, turn_quantity: 1 SINGLE COMPONENT SINGLE PRIMARY, coil_form_type: HOLLOW SINGLE COMPONENT. This part is cataloged in the U.S.

Government catalog under NSN 5950-01-270-9571, 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
278-0439-040
NSN: 5950-01-270-9571
FSC: 5950 — Coils and Transformers
CAGE: 13499 — ROCKWELL COLLINS, INC. DBA COLLINS AEROSPACE GOVERNMENT SYSTEMS DIV COLLINS AEROSPACE - GOVERNMENT SYSTEMS (USA)
SPECIFICATIONS
body_width1.091 INCHES MAXIMUM IN
body_height0.568 INCHES MAXIMUM IN
body_length2.170 INCHES MAXIMUM IN
rating_methodWINDING TURNS SINGLE COMPONENT SINGLE SECONDARY
turn_quantity1 SINGLE COMPONENT SINGLE PRIMARY
coil_form_typeHOLLOW SINGLE COMPONENT
inclosure_typeOPEN
mounting_methodTAB SINGLE GROUP
mounting_tab_width0.080 INCHES NOMINAL IN
reliability_indicatorNOT ESTABLISHED
winding_conductor_size0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
end_item_identificationRECEIVER-TRANSMITTER
NSN5950-01-270-9571
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,RADIO FREQUENCY TITLE COMPONENT PN 278-0439-040 MFR TRANSFORMER,RADIO FREQ
KEY FEATURES
•
INCLOSURE TYPE: OPEN
•
TURN QUANTITY: 5 SINGLE COMPONENT SINGLE SECONDARY
•
MOUNTING METHOD: TAB SINGLE GROUP
•
BODY WIDTH: 1.091 INCHES MAXIMUM IN
•
BODY HEIGHT: 0.568 INCHES MAXIMUM IN
•
WINDING CONDUCTOR SIZE: 0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
•
COIL FORM TYPE: HOLLOW SINGLE COMPONENT
TECHNICAL CHARACTERISTICS
INCLOSURE TYPEOPEN
TURN QUANTITY5 SINGLE COMPONENT SINGLE SECONDARY
TURN QUANTITY1 SINGLE COMPONENT SINGLE PRIMARY
MOUNTING METHODTAB SINGLE GROUP
BODY WIDTH1.091 INCHES MAXIMUM IN
BODY HEIGHT0.568 INCHES MAXIMUM IN
WINDING CONDUCTOR SIZE0.04030 INCHES AMERICAN WIRE GAGE SINGLE COMPONENT SINGLE SECONDARY IN
COIL FORM TYPEHOLLOW SINGLE COMPONENT
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
BODY LENGTH2.170 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
A-419Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 278-0439-040?
278-0439-040 is a TRANSFORMER,RADIO FREQUENCY.
What parts can replace 278-0439-040?
There is 1 known substitute for 278-0439-040: A-419. Substitute compatibility should be verified for your specific system.
What is the NSN for 278-0439-040?
278-0439-040 is cataloged in the U.S. Government catalog under NSN 5950-01-270-9571. 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.