PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

628ATransformer,audio Frequency

At and T Corp · NSN 5950-00-222-6302 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-222-6302 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-222-6302. Primary manufacturer part number: 628A.
Features
  • Transformer,audio Frequency — FSC 5950
  • Inclosure Type: FULLY INCLOSED
  • Transformer Function: INPUT
  • Distance Between Mounting Facility Centers: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Impedance Rating in Ohms: 25000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
  • Thread Quantity Per Inch: 20 SINGLE GROUP
  • Body Height: 3.438 INCHES NOMINAL IN
  • Mounting Method: THREADED STUD(S) SINGLE GROUP
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,audio Frequency, cataloged under National Stock Number 5950-00-222-6302, 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 At and T Corp. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 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: Active.

Technical Specifications
ParameterValue
NSN5950-00-222-6302
Primary Part Number628A
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAt and T Corp
StatusACTIVE
Inclosure TypeFULLY INCLOSED
Transformer FunctionINPUT
Distance Between Mounting Facility Centers1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Impedance Rating in Ohms25000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Thread Quantity Per Inch20 SINGLE GROUP
Body Height3.438 INCHES NOMINAL IN
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Primary to Secondary Turn Ratio1 TO 6.45 SINGLE COMPONENT
Body Width1.688 INCHES NOMINAL IN
Frequency Rating255.0 HERTZ MINIMUM AND 3.145 KILOHERTZ MAXIMUM SINGLE COMPONENT
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting Facility Quantity2 SINGLE GROUP
Nominal Thread Size0.250 INCHES SINGLE GROUP IN
Terminal Type and Quantity5 TAB, SOLDER LUG
Body Length2.531 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-011-2304 INTERCHANGEABLE
Plug,pipe
5310-00-582-5965196 INTERCHANGEABLE
Washer,lock
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
6625-00-629-1987628A INTERCHANGEABLE
Adapter,test
Telephonics Corp/prd Instruments
6625-00-859-3421 INTERCHANGEABLE
Generator,signal
4730-01-071-8262 INTERCHANGEABLE
Plug,pipe
4730-01-117-2803628A-2-K-.125-M INTERCHANGEABLE
Strainer Element,sediment
Staples & Pfeiffer, Inc.
4730-01-188-5967SP-123-1 1-2IN-K-.25M INTERCHANGEABLE
Strainer Element,sediment
Staples & Pfeiffer, Inc.
Cross-Reference Index
Part NumberManufacturer
628A At and T Corp (USA)
628A American Telephone and Telegraph Co (USA)
628A Lucent Technologies Inc Corporate Headquarters (USA)
628INPUTTRANSF0RMER American Telephone and Telegraph Co (USA)
Related Parts
4730-00-011-2304INTERCHANGEABLE
PLUG,PIPE
5310-00-582-5965INTERCHANGEABLE
WASHER,LOCK
196
6625-00-629-1987INTERCHANGEABLE
ADAPTER,TEST
628A
6625-00-859-3421INTERCHANGEABLE
GENERATOR,SIGNAL
4730-01-071-8262INTERCHANGEABLE
PLUG,PIPE
4730-01-117-2803INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
628A-2-K-.125-M
4730-01-188-5967INTERCHANGEABLE
STRAINER ELEMENT,SEDIMENT
SP-123-1 1-2IN-K-.25M

Frequently Asked Questions

What is NSN 5950-00-222-6302?

NSN 5950-00-222-6302 is a Transformer,audio Frequency, manufactured by At and T Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-222-6302?

NSN 5950-00-222-6302 has 4 cross-referenced part numbers: 628A (At and T Corp), 628A (American Telephone and Telegraph Co), 628A (Lucent Technologies Inc Corporate Headquarters), 628INPUTTRANSF0RMER (American Telephone and Telegraph Co).

What NSN replaces 5950-00-222-6302?

There are 7 known substitutes for 5950-00-222-6302: 4730-00-011-2304, 5310-00-582-5965, 6625-00-629-1987 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 628A?

Key specifications for 628A: Inclosure Type: FULLY INCLOSED; Transformer Function: INPUT; Distance Between Mounting Facility Centers: 1.750 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Impedance Rating in Ohms: 25000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY. 19 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com