PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

T46557HTransformer,audio Frequency

Thordarson Inc · NSN 5950-00-645-7811 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-645-7811 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-645-7811. Primary manufacturer part number: T46557H.
Features
  • Transformer,audio Frequency — FSC 5950
  • Inclosure Type: HERMETICALLY SEALED
  • Impedance Rating in Ohms: 2000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Impedance Rating in Ohms: 26000.0 NOMINAL SINGLE COMPONENT ALL PRIMARY
  • Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP
  • Maximum Transformer Power Rating: 10.0 DECIBELS SINGLE COMPONENT
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Mounting Bolt Circle Diameter: 1.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-645-7811, 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 Thordarson Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-645-7811
Primary Part NumberT46557H
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerThordarson Inc
StatusACTIVE
Inclosure TypeHERMETICALLY SEALED
Impedance Rating in Ohms2000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Impedance Rating in Ohms26000.0 NOMINAL SINGLE COMPONENT ALL PRIMARY
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Maximum Transformer Power Rating10.0 DECIBELS SINGLE COMPONENT
Mounting Facility Quantity4 SINGLE GROUP
Mounting Bolt Circle Diameter1.312 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current8.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT ALL PRIMARY
Body Length2.000 INCHES NOMINAL IN
Frequency Rating185.0 HERTZ MINIMUM AND 205.0 HERTZ MAXIMUM SINGLE COMPONENT
Winding Function and Quantity2 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE AND BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Terminal Type and Quantity7 STANDOFF, SCREW
Primary to Secondary Turn Ratio1 TO 7-1/4 SINGLE COMPONENT
Body Outside Diameter1.665 INCHES NOMINAL IN
Reliability IndicatorNOT ESTABLISHED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
4820-00-057-9491NO. 62100 VAVLE N.P.S. 1 IN. INTERCHANGEABLE
Valve,gate
Crane Co Div Valve Div
5999-01-434-7872632-030-001 INTERCHANGEABLE
Contact Strip,printed Wiring Com
Parker-Hannifin Corporation Dba Pneutronics Div Fluid Systems Division
Cross-Reference Index
Part NumberManufacturer
T46557H PRIMARY Thordarson Inc (USA)
188401 Lockheed Martin Corporation Div Rms - Mitchel Field (USA)
Related Parts
4820-00-057-9491INTERCHANGEABLE
VALVE,GATE
NO. 62100 VAVLE N.P.S. 1 IN.
5999-01-434-7872INTERCHANGEABLE
CONTACT STRIP,PRINTED WIRING COM
632-030-001

Frequently Asked Questions

What is NSN 5950-00-645-7811?

NSN 5950-00-645-7811 is a Transformer,audio Frequency, manufactured by Thordarson Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-645-7811?

NSN 5950-00-645-7811 has 2 cross-referenced part numbers: T46557H (Thordarson Inc), 188401 (Lockheed Martin Corporation Div Rms - Mitchel Field).

What NSN replaces 5950-00-645-7811?

There are 2 known substitutes for 5950-00-645-7811: 4820-00-057-9491, 5999-01-434-7872. Verify interchangeability with system specifications before substitution.

What are the specifications of T46557H?

Key specifications for T46557H: Inclosure Type: HERMETICALLY SEALED; Impedance Rating in Ohms: 2000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY; Impedance Rating in Ohms: 26000.0 NOMINAL SINGLE COMPONENT ALL PRIMARY; Mounting Method: UNTHREADED HOLE(S) SINGLE GROUP. 16 total characteristics are documented in the Federal Logistics Information System.

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