PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4426-4KCoil,radio Frequency

Jeffers Electronics Inc · NSN 5950-01-279-4863 · FSC 5950 · No Item Name Available
Verified by PartsTable
NSN 5950-01-279-4863 — this item is cataloged by the U.S. Government under National Stock Number 5950-01-279-4863. Primary manufacturer part number: 4426-4K.
Features
  • Coil,radio Frequency — FSC 5950
  • Test Data Document: 81349-MIL-C-39010 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
  • Terminal Type and Quantity: 2 WIRE LEAD
  • Reliability Failure Rate Level in Percent: 0.010
  • Reliability Indicator: ESTABLISHED
  • Specification/standard Data: 81349-MIL-C-39010/8 GOVERNMENT SPECIFICATION
  • Quality Factor: 28 MINIMUM SINGLE COMPONENT SINGLE WINDING
  • Inclosure Type: FULLY INCLOSED
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Coil,radio Frequency, cataloged under National Stock Number 5950-01-279-4863, 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 Jeffers Electronics Inc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 15 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5950-01-279-4863
Primary Part Number4426-4K
Item NameCoil,radio Frequency
FSC / FSG5950 / 59 — No Item Name Available
ManufacturerJeffers Electronics Inc
StatusCANCELLED
Test Data Document81349-MIL-C-39010 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).
Terminal Type and Quantity2 WIRE LEAD
Reliability Failure Rate Level in Percent0.010
Reliability IndicatorESTABLISHED
Specification/standard Data81349-MIL-C-39010/8 GOVERNMENT SPECIFICATION
Quality Factor28 MINIMUM SINGLE COMPONENT SINGLE WINDING
Inclosure TypeFULLY INCLOSED
Rating MethodELECTRICAL SINGLE COMPONENT SINGLE WINDING
Winding Operating Current495.0 MILLIAMPERES DC NOMINAL SINGLE COMPONENT SINGLE WINDING
Core ConstructionS0LID SINGLE COMPONENT
Inductance Rating0.68 MICROHENRIES NOMINAL SINGLE COMPONENT SINGLE WINDING
Overall Diameter0.085 INCHES MINIMUM AND 0.105 INCHES MAXIMUM IN
DC Resistance Rating in Ohms0.600 SINGLE COMPONENT SINGLE WINDING
Mounting MethodTERMINAL SINGLE GROUP
Coil Form TypeSOLID SINGLE COMPONENT
Body Length0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
Maximum Operating Temp125.0 CELSIUS DEGC
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 6
5961-00-052-2792 INTERCHANGEABLE
Transistor
5950-00-059-5919SM-B-650699-12 INTERCHANGEABLE
Coil,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5950-00-211-3995 INTERCHANGEABLE
Coil,radio Frequency
5915-00-855-09096503B INTERCHANGEABLE
Phase Shifter,l Ban
Spectrum Microwave, Inc.
6625-01-179-51944426-4 INTERCHANGEABLE
Divider,power,radio Frequency
Narda Holdings, Inc. Dba Narda-Miteq Div Narda-Miteq
7520-01-294-379183001 INTERCHANGEABLE
Marker,tube Type
George W. Allen Co., Inc.
Cross-Reference Index
Part NumberManufacturer
4426-4K Jeffers Electronics Inc (USA)
MS75083-11 Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M
240-2021-001 Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems (USA)
M39010/8-BR68KM Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
1801-0688-001 Viavi Solutionsllc (USA)
MIL-C-39010/8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
8487646-11 S. W. Electronics & Manufacturing Corp. Dba Swemco (USA)
M39010/08BR68KR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
4426-4 Jeffers Electronics Inc (USA)
8487646-11 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
M39010/08-BR68KM Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
9140-0141 Keysight Technologies, Inc. (USA)
240-2021-002 Rockwell Collins, Inc. Div Collins Aerospace - Mission Systems (USA)
LT4K349 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-PRF-39010/8 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
5961-00-052-2792INTERCHANGEABLE
TRANSISTOR
5950-00-059-5919INTERCHANGEABLE
COIL,RADIO FREQUENCY
SM-B-650699-12
5950-00-211-3995INTERCHANGEABLE
COIL,RADIO FREQUENCY
5915-00-855-0909INTERCHANGEABLE
PHASE SHIFTER,L BAN
6503B
6625-01-179-5194INTERCHANGEABLE
DIVIDER,POWER,RADIO FREQUENCY
4426-4
7520-01-294-3791INTERCHANGEABLE
MARKER,TUBE TYPE
83001

Frequently Asked Questions

What is NSN 5950-01-279-4863?

NSN 5950-01-279-4863 is a Coil,radio Frequency, manufactured by Jeffers Electronics Inc, classified under FSC 5950 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5950-01-279-4863?

NSN 5950-01-279-4863 has 15 cross-referenced part numbers: 4426-4K (Jeffers Electronics Inc), MS75083-11 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 240-2021-001 (Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems), M39010/8-BR68KM (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 1801-0688-001 (Viavi Solutionsllc) and 10 more.

What NSN replaces 5950-01-279-4863?

There are 6 known substitutes for 5950-01-279-4863: 5961-00-052-2792, 5950-00-059-5919, 5950-00-211-3995 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4426-4K?

Key specifications for 4426-4K: Test Data Document: 81349-MIL-C-39010 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTING GENERAL TYPE DATA ON CERTAIN ENVIRONMENTAL AND PERFORMANCE REQUIREMENTS AND TEST CONDITIONS THAT ARE SHOWN AS "TYPICAL", "AVERAGE", "NOMINAL", ETC.).; Terminal Type and Quantity: 2 WIRE LEAD; Reliability Failure Rate Level in Percent: 0.010; Reliability Indicator: ESTABLISHED. 17 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5950-01-279-4863 still in active supply?

NSN 5950-01-279-4863 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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