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A12403 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited
— · COMPONENT
PRODUCT OVERVIEW

A12403: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 1.312 INCHES MAXIMUM IN, body_height: 1.500 INCHES MAXIMUM IN, body_length: 1.312 INCHES MAXIMUM IN, inclosure_type: FULLY INCLOSED, overall_height: 1.875 INCHES NOMINAL IN, mounting_method: THREADED STUD(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-974-5416, 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
A12403
NSN: 5950-00-974-5416
FSC: 5950 — Coils and Transformers
CAGE: 00144 — TE CONNECTIVITY NETWORKS, INC. DIV ADC TELECOMMUNICATIONS SALES, INC. (USA)
SPECIFICATIONS
body_width1.312 INCHES MAXIMUM IN
body_height1.500 INCHES MAXIMUM IN
body_length1.312 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
overall_height1.875 INCHES NOMINAL IN
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
transformer_functionLINE
reliability_indicatorNOT ESTABLISHED
impedance_rating_in_ohms150.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
thread_quantity_per_inch32 SINGLE GROUP
NSN5950-00-974-5416
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN A12403 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
TRANSFORMER FUNCTION: LINE
•
MOUNTING FACILITY QUANTITY: 2 SINGLE GROUP
•
INCLOSURE TYPE: FULLY INCLOSED
•
MOUNTING METHOD: THREADED STUD(S) SINGLE GROUP
•
BODY WIDTH: 1.312 INCHES MAXIMUM IN
•
BODY HEIGHT: 1.500 INCHES MAXIMUM IN
•
WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
TECHNICAL CHARACTERISTICS
OVERALL HEIGHT1.875 INCHES NOMINAL IN
TRANSFORMER FUNCTIONLINE
MOUNTING FACILITY QUANTITY2 SINGLE GROUP
INCLOSURE TYPEFULLY INCLOSED
MOUNTING METHODTHREADED STUD(S) SINGLE GROUP
BODY WIDTH1.312 INCHES MAXIMUM IN
BODY HEIGHT1.500 INCHES MAXIMUM IN
WINDING FUNCTION AND QUANTITY1 PRIMARY AND 2 SECONDARY SINGLE COMPONENT
IMPEDANCE RATING IN OHMS150.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
IMPEDANCE RATING IN OHMS650.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY
SUBSTITUTES & CROSS-REFERENCES 2
5009Reference document
Same NSN cross-reference
Reference document — Secondary reference
101369Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
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 A12403?
A12403 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace A12403?
There are 2 known substitutes for A12403: 5009, 101369. Substitute compatibility should be verified for your specific system.
What is the NSN for A12403?
A12403 is cataloged in the U.S. Government catalog under NSN 5950-00-974-5416. 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.