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Technical Data Sheet
FD61-879 ✓ Verified by PartsTable
· COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 1.438 INCHES NOMINAL IN, body_height: 2.375 INCHES NOMINAL IN, body_length: 1.438 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, mounting_method: THREADED STUD(S) SINGLE GROUP, frequency_rating: 400.0 HERTZ MAXIMUM SINGLE COMPONENT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-553-6027, 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
FD61-879
NSN: 5950-00-553-6027
FSC: 5950
CAGE: 56232 — LOCKHEED MARTIN CORPORATION DIV RMS - MITCHEL FIELD (USA)
SPECIFICATIONS
body_width1.438 INCHES NOMINAL IN
body_height2.375 INCHES NOMINAL IN
body_length1.438 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating400.0 HERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
impedance_rating_in_ohms3000.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_shielding_methodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
NSN5950-00-553-6027
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN FD61-879 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
RELIABILITY INDICATOR: NOT ESTABLISHED
FREQUENCY RATING: 400.0 HERTZ MAXIMUM SINGLE COMPONENT
IMPEDANCE RATING IN OHMS: 555.0 NOMINAL SINGLE COMPONENT SECOND PRIMARY
NOMINAL THREAD SIZE: 0.138 INCHES SINGLE GROUP IN
MOUNTING METHOD: THREADED STUD(S) SINGLE GROUP
WINDING SHIELDING METHOD: INTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
BODY HEIGHT: 2.375 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
RELIABILITY INDICATORNOT ESTABLISHED
FREQUENCY RATING400.0 HERTZ MAXIMUM SINGLE COMPONENT
IMPEDANCE RATING IN OHMS555.0 NOMINAL SINGLE COMPONENT SECOND PRIMARY
NOMINAL THREAD SIZE0.138 INCHES SINGLE GROUP IN
IMPEDANCE RATING IN OHMS3000.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
MOUNTING METHODTHREADED STUD(S) SINGLE GROUP
WINDING SHIELDING METHODINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
BODY HEIGHT2.375 INCHES NOMINAL IN
BODY WIDTH1.438 INCHES NOMINAL IN
TERMINAL TYPE AND QUANTITY10 TAB, SOLDER LUG
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
14125AInterchangeable
interchangeable cross-reference
interchangeable
BT14125AInterchangeable
interchangeable cross-reference
interchangeable
5837Interchangeable
interchangeable cross-reference
interchangeable
28354Interchangeable
interchangeable cross-reference
interchangeable
854578Interchangeable
interchangeable cross-reference
interchangeable
39956Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is FD61-879?
FD61-879 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace FD61-879?
There are 20 known substitutes for FD61-879: 14125A, BT14125A, 5837 and 17 more. Substitute compatibility should be verified for your specific system.
Is FD61-879 still available?
FD61-879 is currently cancelled.
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