PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

15961Transformer,audio Frequency

Astec America Inc. · NSN 5950-00-978-9663 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-00-978-9663 — this item is cataloged by the U.S. Government under National Stock Number 5950-00-978-9663. Primary manufacturer part number: 15961.
Features
  • Transformer,audio Frequency — FSC 5950
  • Reliability Indicator: NOT ESTABLISHED
  • Body Length: 1.756 INCHES MAXIMUM IN
  • Mounting Hole Diameter: 0.156 INCHES NOMINAL SINGLE GROUP IN
  • Body Height: 1.562 INCHES MAXIMUM IN
  • Mounting Method: FLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
  • Mounting Facility Quantity: 2 SINGLE GROUP
  • Body Width: 1.156 INCHES MAXIMUM 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 5950-00-978-9663, 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 Astec America Inc.. Government technical data includes 16 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5950-00-978-9663
Primary Part Number15961
Item NameTransformer,audio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerAstec America Inc.
StatusACTIVE
Reliability IndicatorNOT ESTABLISHED
Body Length1.756 INCHES MAXIMUM IN
Mounting Hole Diameter0.156 INCHES NOMINAL SINGLE GROUP IN
Body Height1.562 INCHES MAXIMUM IN
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Mounting Facility Quantity2 SINGLE GROUP
Body Width1.156 INCHES MAXIMUM IN
Maximum Transformer Power Rating1.0 MILLIWATTS SINGLE COMPONENT
Distance Between Mounting Facility Centers1.444 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP IN
Frequency Rating50.0 HERTZ MINIMUM AND 20.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
Winding Shielding MethodINTERNAL SHIELD GROUNDED TO INCLOSURE AND CORE SINGLE COMPONENT
Terminal Type and Quantity4 WIRE HOOK
Inclosure TypeHERMETICALLY SEALED
Impedance Rating in Ohms600.0 NOMINAL SINGLE COMPONENT SINGLE SECONDARY
Impedance Rating in Ohms150.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
4730-00-277-6352 INTERCHANGEABLE
Plug,pipe
5950-00-497-5788712073-1 INTERCHANGEABLE
Transformer,radio Frequency
Raytheon Company Div Rmd Strategic
6210-01-079-4011 INTERCHANGEABLE
Light Assembly,indicator
5915-01-208-23509135-0109 INTERCHANGEABLE
Filter,low Pass
Keysight Technologies Inc
5985-01-253-3981 INTERCHANGEABLE
Line Section,radio Frequency Tra
5133-01-399-1214 INTERCHANGEABLE
Drill,twist
8145-01-627-556315961 INTERCHANGEABLE
Shipping and Storage Container,h
Naval Inventory Control Point
3040-01-716-3527954510 INTERCHANGEABLE
Parts Kit,gearbox
Dover Pumps & Process Solutions Segment Inc Dba Blackmer Div Blackmer
Cross-Reference Index
Part NumberManufacturer
9545-10 Electro-Technology (USA)
9545-10 Ampex Systems Corp (USA)
15961 PRIMARY Astec America Inc. (USA)
9545-10ISSUEB Ampex Systems Corp (USA)
Related Parts
4730-00-277-6352INTERCHANGEABLE
PLUG,PIPE
5950-00-497-5788INTERCHANGEABLE
TRANSFORMER,RADIO FREQUENCY
712073-1
6210-01-079-4011INTERCHANGEABLE
LIGHT ASSEMBLY,INDICATOR
5915-01-208-2350INTERCHANGEABLE
FILTER,LOW PASS
9135-0109
5985-01-253-3981INTERCHANGEABLE
LINE SECTION,RADIO FREQUENCY TRA
5133-01-399-1214INTERCHANGEABLE
DRILL,TWIST
8145-01-627-5563INTERCHANGEABLE
SHIPPING AND STORAGE CONTAINER,H
15961
3040-01-716-3527INTERCHANGEABLE
PARTS KIT,GEARBOX
954510

Frequently Asked Questions

What is NSN 5950-00-978-9663?

NSN 5950-00-978-9663 is a Transformer,audio Frequency, manufactured by Astec America Inc., classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-00-978-9663?

NSN 5950-00-978-9663 has 4 cross-referenced part numbers: 9545-10 (Electro-Technology), 9545-10 (Ampex Systems Corp), 15961 (Astec America Inc.), 9545-10ISSUEB (Ampex Systems Corp).

What NSN replaces 5950-00-978-9663?

There are 8 known substitutes for 5950-00-978-9663: 4730-00-277-6352, 5950-00-497-5788, 6210-01-079-4011 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 15961?

Key specifications for 15961: Reliability Indicator: NOT ESTABLISHED; Body Length: 1.756 INCHES MAXIMUM IN; Mounting Hole Diameter: 0.156 INCHES NOMINAL SINGLE GROUP IN; Body Height: 1.562 INCHES MAXIMUM IN. 17 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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