PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1705DTransformer,power

Atec Inc · NSN 5950-00-396-3990 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-396-3990 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-396-3990. Primary manufacturer part number: 1705D.
Features
  • Transformer,power — FSC 5950
  • Mounting Method: THREADED HOLE(S) SINGLE GROUP
  • Reliability Indicator: NOT ESTABLISHED
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Winding Shielding Method: INTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
  • Inclosure Type: PARTIALLY INCLOSED, DOUBLE SHELL
  • Thread Quantity Per Inch: 32 SINGLE GROUP
  • Nominal Thread Size: 0.164 INCHES SINGLE GROUP IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,power, cataloged under National Stock Number 5950-00-396-3990, 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 Atec Inc. Government technical data includes 22 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-396-3990
Primary Part Number1705D
Item NameTransformer,power
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAtec Inc
StatusACTIVE
Mounting MethodTHREADED HOLE(S) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Mounting Facility Quantity4 SINGLE GROUP
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT
Inclosure TypePARTIALLY INCLOSED, DOUBLE SHELL
Thread Quantity Per Inch32 SINGLE GROUP
Nominal Thread Size0.164 INCHES SINGLE GROUP IN
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Winding Function and Quantity2 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Winding Operating Current300.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Input-Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Body Width2.500 INCHES NOMINAL IN
Winding Operating Voltage115.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
Body Length3.000 INCHES NOMINAL IN
Winding Operating Voltage9.00 AC VOLTS NOMINAL SINGLE COMPONENT THIRD SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Length2.500 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Terminal Type and Quantity10 WIRE LEAD
Winding Operating Voltage17.50 AC VOLTS NOMINAL SINGLE COMPONENT SECOND SECONDARY
Center to Center Distance Between Mounting Facilities Parallel to Width1.875 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Winding Operating Current1.0 AMPERES AC MAXIMUM SINGLE COMPONENT THIRD SECONDARY
Body Height1.000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-404-888168S1705 INTERCHANGEABLE
Transformer,power
Grand Transformers, Inc Dba Texas Transformer
6240-00-725-22681705 INTERCHANGEABLE
Lamp,incandescent
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
5935-01-043-14331705D-1 INTERCHANGEABLE
Jack,tip
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
Cross-Reference Index
Part NumberManufacturer
1705-11-15-68 Atec Inc (USA)
S1705D Atec Inc (USA)
SN1705B Atec Inc (USA)
1705D PRIMARY Atec Inc (USA)
Related Parts
5950-00-404-8881INTERCHANGEABLE
TRANSFORMER,POWER
68S1705
6240-00-725-2268INTERCHANGEABLE
LAMP,INCANDESCENT
1705
5935-01-043-1433INTERCHANGEABLE
JACK,TIP
1705D-1

Frequently Asked Questions

What is NSN 5950-00-396-3990?

NSN 5950-00-396-3990 is a Transformer,power, manufactured by Atec Inc, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-396-3990?

NSN 5950-00-396-3990 has 4 cross-referenced part numbers: 1705-11-15-68 (Atec Inc), S1705D (Atec Inc), SN1705B (Atec Inc), 1705D (Atec Inc).

What NSN replaces 5950-00-396-3990?

There are 3 known substitutes for 5950-00-396-3990: 5950-00-404-8881, 6240-00-725-2268, 5935-01-043-1433. Verify interchangeability with system specifications before substitution.

What are the specifications of 1705D?

Key specifications for 1705D: Mounting Method: THREADED HOLE(S) SINGLE GROUP; Reliability Indicator: NOT ESTABLISHED; Mounting Facility Quantity: 4 SINGLE GROUP; Winding Shielding Method: INTERNAL SHIELD GROUNDED TO CORE SINGLE COMPONENT. 22 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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