T1557 — TRANSFORMER,AUDIO FREQUENCY

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

T1557: TRANSFORMER,AUDIO FREQUENCY.

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 0.800 INCHES MAXIMUM IN, body_height: 1.390 INCHES MAXIMUM IN, body_length: 1.140 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, overall_height: 2.010 INCHES NOMINAL IN, mounting_method: THREADED HOLE(S) SINGLE GROUP. This part is cataloged in the U.S.

Government catalog under NSN 5950-00-864-9397, 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

T1557

NSN: 5950-00-864-9397
FSC: 5950 — Coils and Transformers
CAGE: 98330 — OECO, LLC (USA)

SPECIFICATIONS

body_width	0.800 INCHES MAXIMUM IN
body_height	1.390 INCHES MAXIMUM IN
body_length	1.140 INCHES MAXIMUM IN
inclosure_type	HERMETICALLY SEALED
overall_height	2.010 INCHES NOMINAL IN
mounting_method	THREADED HOLE(S) SINGLE GROUP
frequency_rating	4.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size	0.138 INCHES SINGLE GROUP IN
reliability_indicator	NOT ESTABLISHED
impedance_rating_in_ohms	381.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
thread_quantity_per_inch	32 SINGLE GROUP
thread_series_designator	UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
NSN	5950-00-864-9397

COMPONENT DIAGRAM

KEY FEATURES

•

MOUNTING FACILITY QUANTITY: 2 SINGLE GROUP

•

INCLOSURE TYPE: HERMETICALLY SEALED

•

MOUNTING METHOD: THREADED HOLE(S) SINGLE GROUP

•

BODY WIDTH: 0.800 INCHES MAXIMUM IN

•

BODY HEIGHT: 1.390 INCHES MAXIMUM IN

•

MAXIMUM TRANSFORMER POWER RATING: 2.0 WATTS SINGLE COMPONENT

•

WINDING FUNCTION AND QUANTITY: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT

TECHNICAL CHARACTERISTICS

OVERALL HEIGHT	2.010 INCHES NOMINAL IN
MOUNTING FACILITY QUANTITY	2 SINGLE GROUP
INCLOSURE TYPE	HERMETICALLY SEALED
MOUNTING METHOD	THREADED HOLE(S) SINGLE GROUP
BODY WIDTH	0.800 INCHES MAXIMUM IN
BODY HEIGHT	1.390 INCHES MAXIMUM IN
MAXIMUM TRANSFORMER POWER RATING	2.0 WATTS SINGLE COMPONENT
WINDING FUNCTION AND QUANTITY	1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
IMPEDANCE RATING IN OHMS	381.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
IMPEDANCE RATING IN OHMS	381.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY

SUBSTITUTES & CROSS-REFERENCES 4

663MR20T1Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

T1557ASame NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

1063909REVCReference document

Same NSN cross-reference

Reference document — Secondary reference

1063909Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

Acquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required — mutilation

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FREQUENTLY ASKED QUESTIONS

What is T1557?

T1557 is a TRANSFORMER,AUDIO FREQUENCY.

What parts can replace T1557?

There are 4 known substitutes for T1557: 663MR20T1, T1557A, 1063909REVC and 1 more. Substitute compatibility should be verified for your specific system.

What is the NSN for T1557?

T1557 is cataloged in the U.S. Government catalog under NSN 5950-00-864-9397. This indicates validated use in U.S. government and defense supply chains.

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