PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

172BReactor

Lucent Technologies Inc Corporate Headquarters · NSN 5950-00-158-9256 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-158-9256 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-158-9256. Primary manufacturer part number: 172B.
Features
  • Reactor — FSC 5950
  • Inductance Rating: 18.50 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
  • Winding Operating Current: 120.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
  • Terminal Type and Quantity: 2 TAB, SOLDER LUG
  • DC Resistance Rating in Ohms: 270.000 SINGLE COMPONENT SINGLE WINDING
  • Mounting Facility Quantity: 4 SINGLE GROUP
  • Body Height: 3.375 INCHES NOMINAL IN
  • Body Length: 4.375 INCHES NOMINAL IN
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Reactor, cataloged under National Stock Number 5950-00-158-9256, 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 Lucent Technologies Inc Corporate Headquarters. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 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
NSN5950-00-158-9256
Primary Part Number172B
Item NameReactor
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerLucent Technologies Inc Corporate Headquarters
StatusACTIVE
Inductance Rating18.50 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current120.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING
Terminal Type and Quantity2 TAB, SOLDER LUG
DC Resistance Rating in Ohms270.000 SINGLE COMPONENT SINGLE WINDING
Mounting Facility Quantity4 SINGLE GROUP
Body Height3.375 INCHES NOMINAL IN
Body Length4.375 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Length2.812 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Inductance TypeFIXED
Winding Quantity1 SINGLE COMPONENT
Body Width3.500 INCHES NOMINAL IN
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Center to Center Distance Between Mounting Facilities Parallel to Width1.938 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Reliability IndicatorNOT ESTABLISHED
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5935-00-023-192611462551 INTERCHANGEABLE
Adapter,connector
Us Army Aviation and Missile Command
5930-00-484-1405172B INTERCHANGEABLE
Switch,push
Carling Technologies, Inc Dba Carlingswitch
Cross-Reference Index
Part NumberManufacturer
172B American Telephone and Telegraph Co (USA)
172B Lucent Technologies Inc Dba Federal Marketing Group (USA)
172B PRIMARY Lucent Technologies Inc Corporate Headquarters (USA)
172B At and T Corp (USA)
Related Parts
5935-00-023-1926INTERCHANGEABLE
ADAPTER,CONNECTOR
11462551
5930-00-484-1405INTERCHANGEABLE
SWITCH,PUSH
172B

Frequently Asked Questions

What is NSN 5950-00-158-9256?

NSN 5950-00-158-9256 is a Reactor, manufactured by Lucent Technologies Inc Corporate Headquarters, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-158-9256?

NSN 5950-00-158-9256 has 4 cross-referenced part numbers: 172B (American Telephone and Telegraph Co), 172B (Lucent Technologies Inc Dba Federal Marketing Group), 172B (Lucent Technologies Inc Corporate Headquarters), 172B (At and T Corp).

What NSN replaces 5950-00-158-9256?

There are 2 known substitutes for 5950-00-158-9256: 5935-00-023-1926, 5930-00-484-1405. Verify interchangeability with system specifications before substitution.

What are the specifications of 172B?

Key specifications for 172B: Inductance Rating: 18.50 HENRY NOMINAL SINGLE COMPONENT SINGLE WINDING; Winding Operating Current: 120.0 MILLIAMPERES DC MAXIMUM SINGLE COMPONENT SINGLE WINDING; Terminal Type and Quantity: 2 TAB, SOLDER LUG; DC Resistance Rating in Ohms: 270.000 SINGLE COMPONENT SINGLE WINDING. 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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