PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

677-0388-000Transformer,audio Frequency

J F C Electronics Inc · NSN 5950-00-645-2007 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-2007 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-2007. Primary manufacturer part number: 677-0388-000.
Features
  • Transformer,audio Frequency — FSC 5950
  • Transformer Function: MODULATION
  • Impedance Rating in Ohms: 600.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY
  • Body Length: 4.500 INCHES NOMINAL IN
  • Winding Operating Current: 350.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
  • Impedance Rating in Ohms: 2400.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
  • Winding Operating Current: 300.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
  • Winding Function and Quantity: 1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-645-2007, is classified within Federal Supply Class 5950 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is J F C Electronics Inc. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-00-645-2007
Primary Part Number677-0388-000
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerJ F C Electronics Inc
StatusCANCELLED
Transformer FunctionMODULATION
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY
Body Length4.500 INCHES NOMINAL IN
Winding Operating Current350.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Impedance Rating in Ohms2400.0 NOMINAL SINGLE COMPONENT SECOND SECONDARY
Winding Operating Current300.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Frequency Rating200.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Mounting Facility Quantity6 SINGLE GROUP
Terminal Type and Quantity11 STANDOFF, SOLDER LUG
Center to Center Distance Between Mounting Facilities Parallel to Length4.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Maximum Transformer Power Rating150.0 WATTS SINGLE COMPONENT
Impedance Rating in Ohms50000.0 NOMINAL SINGLE COMPONENT THIRD SECONDARY
Body Width4.125 INCHES NOMINAL IN
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Width2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inclosure TypeHERMETICALLY SEALED
Impedance Rating in Ohms5500.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Height5.312 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 7
5365-00-152-077114589 INTERCHANGEABLE
Spacer,sleeve
Time Manufacturing Company Dba Time Manufacturing Company
5935-00-252-6342 INTERCHANGEABLE
Cover,electrical Connector
4730-00-374-612719-24 INTERCHANGEABLE
Strainer Element,sediment
Tankcraft Corp
5961-01-179-3275 INTERCHANGEABLE
Semiconductor Device,diode
5365-01-179-417614589 INTERCHANGEABLE
Spacer,plate
Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.
4330-01-330-252015P110QBM2SKS121 INTERCHANGEABLE
Filter,fluid
Parker-Hannifin Corporation Dba Hydraulic Filter Division Div Hydraulic & Fuel Filter Division
6240-01-344-992945PAR38/CAP/SP/120V INTERCHANGEABLE
Lamp,incandescent
Gte Products Corp Sylvania Miniature Lighting Div
Cross-Reference Index
Part NumberManufacturer
677-0388-000 J F C Electronics Inc (USA)
677-0388-00 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
14589 Emerson Electric Co White-Rodgers Div (USA)
Related Parts
5365-00-152-0771INTERCHANGEABLE
SPACER,SLEEVE
14589
5935-00-252-6342INTERCHANGEABLE
COVER,ELECTRICAL CONNECTOR
4730-00-374-6127INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
19-24
5961-01-179-3275INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
5365-01-179-4176INTERCHANGEABLE
SPACER,PLATE
14589
4330-01-330-2520INTERCHANGEABLE
FILTER,FLUID
15P110QBM2SKS121
6240-01-344-9929INTERCHANGEABLE
LAMP,INCANDESCENT
45PAR38/CAP/SP/120V

Frequently Asked Questions

What is NSN 5950-00-645-2007?

NSN 5950-00-645-2007 is a Transformer,audio Frequency, manufactured by J F C Electronics Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-00-645-2007?

NSN 5950-00-645-2007 has 3 cross-referenced part numbers: 677-0388-000 (J F C Electronics Inc), 677-0388-00 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), 14589 (Emerson Electric Co White-Rodgers Div).

What NSN replaces 5950-00-645-2007?

There are 7 known substitutes for 5950-00-645-2007: 5365-00-152-0771, 5935-00-252-6342, 4730-00-374-6127 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 677-0388-000?

Key specifications for 677-0388-000: Transformer Function: MODULATION; Impedance Rating in Ohms: 600.0 NOMINAL SINGLE COMPONENT FIRST SECONDARY; Body Length: 4.500 INCHES NOMINAL IN; Winding Operating Current: 350.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SECOND SECONDARY. 20 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-00-645-2007 still in active supply?

NSN 5950-00-645-2007 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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