PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

581R981H04Transformer,radio Frequency

Northrop Grumman Support Services Corp · NSN 5950-01-246-5439 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-246-5439 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-246-5439. Primary manufacturer part number: 581R981H04.
Features
  • Transformer,radio Frequency — FSC 5950
  • Maximum Operating Temp: 105.0 CELSIUS DEGC
  • Frequency Rating: 1.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT
  • Body Length: 0.525 INCHES MAXIMUM IN
  • Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
  • Mounting Method: TERMINAL SINGLE GROUP
  • Terminal Type and Quantity: 5 PIN
  • Reliability Indicator: NOT ESTABLISHED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transformer,radio Frequency, cataloged under National Stock Number 5950-01-246-5439, 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 Northrop Grumman Support Services Corp. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN5950-01-246-5439
Primary Part Number581R981H04
Item NameTransformer,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerNorthrop Grumman Support Services Corp
StatusACTIVE
Maximum Operating Temp105.0 CELSIUS DEGC
Frequency Rating1.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT
Body Length0.525 INCHES MAXIMUM IN
Winding Function and Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Mounting MethodTERMINAL SINGLE GROUP
Terminal Type and Quantity5 PIN
Reliability IndicatorNOT ESTABLISHED
Body Width0.525 INCHES MAXIMUM IN
Inclosure TypeFULLY INCLOSED
Body Height0.280 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
6610-00-610-022837824 INTERCHANGEABLE
Rail,pressure Ratio
Honeywell International, Inc Div Aerospace-Tucson
5977-00-698-448237824 INTERCHANGEABLE
Ring,electrical Contact
Prestolite Electric Inc
Cross-Reference Index
Part NumberManufacturer
37824 Vanguard Electronics, Llc (USA)
BT9-3 Watkins-Johnson Co (USA)
19301A Vanguard Electronics, Llc (USA)
581R981H04 PRIMARY Northrop Grumman Support Services Corp (USA)
581R981H04 Watkins-Johnson Co (USA)
581R981H04 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
Related Parts
6610-00-610-0228INTERCHANGEABLE
RAIL,PRESSURE RATIO
37824
5977-00-698-4482INTERCHANGEABLE
RING,ELECTRICAL CONTACT
37824

Frequently Asked Questions

What is NSN 5950-01-246-5439?

NSN 5950-01-246-5439 is a Transformer,radio Frequency, manufactured by Northrop Grumman Support Services Corp, classified under FSC 5950 (No Item Name Available). Status: active.

What are the part numbers for NSN 5950-01-246-5439?

NSN 5950-01-246-5439 has 6 cross-referenced part numbers: 37824 (Vanguard Electronics, Llc), BT9-3 (Watkins-Johnson Co), 19301A (Vanguard Electronics, Llc), 581R981H04 (Northrop Grumman Support Services Corp), 581R981H04 (Watkins-Johnson Co) and 1 more.

What NSN replaces 5950-01-246-5439?

There are 2 known substitutes for 5950-01-246-5439: 6610-00-610-0228, 5977-00-698-4482. Verify interchangeability with system specifications before substitution.

What are the specifications of 581R981H04?

Key specifications for 581R981H04: Maximum Operating Temp: 105.0 CELSIUS DEGC; Frequency Rating: 1.0 MEGAHERTZ MINIMUM AND 100.0 MEGAHERTZ MAXIMUM SINGLE COMPONENT; Body Length: 0.525 INCHES MAXIMUM IN; Winding Function and Quantity: 1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT. 10 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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