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3139A1 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

3139A1: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 4.750 INCHES NOMINAL IN, body_height: 7.000 INCHES NOMINAL IN, body_length: 5.875 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, overall_height: 7.688 INCHES NOMINAL IN, mounting_method: THREADED STUD(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-289-9811, 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
3139A1
NSN: 5950-00-289-9811
FSC: 5950 — Coils and Transformers
CAGE: 72149 — ELECTRONIC TRANSFORMER CORP DIV ELECTRONIC TRANSFORMER CORPORATION (USA)
SPECIFICATIONS
body_width4.750 INCHES NOMINAL IN
body_height7.000 INCHES NOMINAL IN
body_length5.875 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
overall_height7.688 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating200.0 HERTZ MINIMUM AND 8.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.250 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
impedance_rating_in_ohms2100.0 NOMINAL SINGLE COMPONENT ALL PRIMARY
thread_quantity_per_inch20 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN5950-00-289-9811
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN 3139A1 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 4 SINGLE GROUP
•
INCLOSURE TYPE: HERMETICALLY SEALED
•
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH: 4.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
•
MOUNTING METHOD: THREADED STUD(S) SINGLE GROUP
•
BODY WIDTH: 4.750 INCHES NOMINAL IN
•
BODY HEIGHT: 7.000 INCHES NOMINAL IN
•
MAXIMUM TRANSFORMER POWER RATING: 500.0 WATTS SINGLE COMPONENT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT7.688 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY4 SINGLE GROUP
INCLOSURE TYPEHERMETICALLY SEALED
CENTER TO CENTER DISTANCE BETWEEN MOUNTING FACILITIES PARALLEL TO LENGTH4.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
MOUNTING METHODTHREADED STUD(S) SINGLE GROUP
BODY WIDTH4.750 INCHES NOMINAL IN
BODY HEIGHT7.000 INCHES NOMINAL IN
MAXIMUM TRANSFORMER POWER RATING500.0 WATTS SINGLE COMPONENT
WINDING FUNCTION AND QUANTITY2 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
IMPEDANCE RATING IN OHMS2100.0 NOMINAL SINGLE COMPONENT ALL PRIMARY
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 3139A1?
3139A1 is a TRANSFORMER,AUDIO FREQUENCY.
What is the NSN for 3139A1?
3139A1 is cataloged in the U.S. Government catalog under NSN 5950-00-289-9811. 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.