PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

BTC1526Transformer,audio Frequency

At and T Corp · NSN 5950-00-647-7727 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-647-7727 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-647-7727. Primary manufacturer part number: BTC1526.
Features
  • Transformer,audio Frequency — FSC 5950
  • Frequency Rating: 400.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
  • Body Width: 1.750 INCHES NOMINAL IN
  • Center to Center Distance Between Mounting Facilities Parallel to Width: 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
  • Terminal Type and Quantity: 6 TAB, SOLDER LUG
  • Inclosure Type: HERMETICALLY SEALED
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Body Height: 2.750 INCHES NOMINAL 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 5950-00-647-7727, 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 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-647-7727
Primary Part NumberBTC1526
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAt and T Corp
StatusACTIVE
Frequency Rating400.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Body Width1.750 INCHES NOMINAL IN
Center to Center Distance Between Mounting Facilities Parallel to Width1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Terminal Type and Quantity6 TAB, SOLDER LUG
Inclosure TypeHERMETICALLY SEALED
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Body Height2.750 INCHES NOMINAL IN
Mounting Facility Quantity4 SINGLE GROUP
Center to Center Distance Between Mounting Facilities Parallel to Length1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Impedance Rating in Ohms4000.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Impedance Rating in Ohms2000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Body Length1.875 INCHES NOMINAL IN
Primary to Secondary Turn Ratio1 TO 1.414 SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5999-00-097-1176 INTERCHANGEABLE
Contact,electrical
6240-00-225-9271 INTERCHANGEABLE
Lamp,incandescent
6625-00-264-7997360-P-2 INTERCHANGEABLE
Meter,electrical Frequency
Herman H Sticht Company, Inc Dba Megohmer Vibrating Reed & Standco
5360-00-292-4139S4504-3132491 PIECE 317 INTERCHANGEABLE
Spring,helical,compression
Naval Sea Systems Command
5977-00-467-4023 INTERCHANGEABLE
Brush,electrical Contact
6625-00-568-4892135-029 INTERCHANGEABLE
Meter,arbitrary Scale
Jewell Instruments Llc
5999-00-811-98934400B0126 INTERCHANGEABLE
Delay Line
Bae Systems Information and Electronic Systems Integration Inc. Dba Bae Systems
5360-00-844-6694 INTERCHANGEABLE
Spring,helical,extension
5905-00-971-8524B8J500 INTERCHANGEABLE
Resistor,fixed,wire Wound,induct
Ohmite Holding, L.l.c. Dba Ohmite Manufacturing
5970-01-136-772615-26 INTERCHANGEABLE
Insulator,bushing
Motorola Automotive Electronics
Cross-Reference Index
Part NumberManufacturer
BTC1526 At and T Corp (USA)
1526 Berkshire Transformer (USA)
BTC1526 Lucent Technologies Inc Corporate Headquarters (USA)
BTC1526 American Telephone and Telegraph Co (USA)
BTC1527 Berkshire Transformer (USA)
Related Parts
5999-00-097-1176INTERCHANGEABLE
CONTACT,ELECTRICAL
6240-00-225-9271INTERCHANGEABLE
LAMP,INCANDESCENT
6625-00-264-7997INTERCHANGEABLE
METER,ELECTRICAL FREQUENCY
360-P-2
5360-00-292-4139INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
S4504-3132491 PIECE 317
5977-00-467-4023INTERCHANGEABLE
BRUSH,ELECTRICAL CONTACT
6625-00-568-4892INTERCHANGEABLE
METER,ARBITRARY SCALE
135-029
5999-00-811-9893INTERCHANGEABLE
DELAY LINE
4400B0126
5360-00-844-6694INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
5905-00-971-8524INTERCHANGEABLE
RESISTOR,FIXED,WIRE WOUND,INDUCT
B8J500
5970-01-136-7726INTERCHANGEABLE
INSULATOR,BUSHING
15-26
5975-01-199-3221INTERCHANGEABLE
BUSHING,GUIDE PIN
1526
5365-01-346-1446INTERCHANGEABLE
SPACER,PLATE

Frequently Asked Questions

What is NSN 5950-00-647-7727?

NSN 5950-00-647-7727 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 5950-00-647-7727?

NSN 5950-00-647-7727 has 5 cross-referenced part numbers: BTC1526 (At and T Corp), 1526 (Berkshire Transformer), BTC1526 (Lucent Technologies Inc Corporate Headquarters), BTC1526 (American Telephone and Telegraph Co), BTC1527 (Berkshire Transformer).

What NSN replaces 5950-00-647-7727?

There are 12 known substitutes for 5950-00-647-7727: 5999-00-097-1176, 6240-00-225-9271, 6625-00-264-7997 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of BTC1526?

Key specifications for BTC1526: Frequency Rating: 400.0 HERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM SINGLE COMPONENT; Body Width: 1.750 INCHES NOMINAL IN; Center to Center Distance Between Mounting Facilities Parallel to Width: 1.250 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN; Terminal Type and Quantity: 6 TAB, SOLDER LUG. 14 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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