PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

RCR20G305FMResistor,fixed,composition

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 5905-00-435-6561 · FSC 5905 · No Item Name Available
Verified by PartsTable
NSN 5905-00-435-6561 — this item is cataloged by the U.S. Government under National Stock Number 5905-00-435-6561. Primary manufacturer part number: RCR20G305FM.
Features
  • Resistor,fixed,composition — FSC 5905
  • Ambient Temp in Deg Celsius at Zero Percent Rated Power: 130.0
  • Ambient Temp at Full Rated Power: 70.0 CELSIUS DEGC
  • Cubic Measure: 0.007 CUBIC INCHES
  • Body Diameter: 0.138 INCHES NOMINAL IN
  • Specification/standard Data: 81349-MIL-R-39008/2 GOVERNMENT SPECIFICATION
  • Power Dissipation Rating in Watts: 0.500 FREE AIR
  • Reliability Failure Rate Level in Percent: 0.001
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
General Description

The Resistor,fixed,composition, cataloged under National Stock Number 5905-00-435-6561, is classified within Federal Supply Class 5905 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 17 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5905-00-435-6561
Primary Part NumberRCR20G305FM
Item NameResistor,fixed,composition
FSC / FSG5905 / 59 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusCANCELLED
Ambient Temp in Deg Celsius at Zero Percent Rated Power130.0
Ambient Temp at Full Rated Power70.0 CELSIUS DEGC
Cubic Measure0.007 CUBIC INCHES
Body Diameter0.138 INCHES NOMINAL IN
Specification/standard Data81349-MIL-R-39008/2 GOVERNMENT SPECIFICATION
Power Dissipation Rating in Watts0.500 FREE AIR
Reliability Failure Rate Level in Percent0.001
Reliability IndicatorESTABLISHED
Style DesignatorAXIAL TERMINAL EACH END
Body Length0.375 INCHES NOMINAL IN
Inclosure TypeENCAPSULATED
Terminal Length1.500 INCHES NOMINAL IN
Terminal TypeWIRE LEAD
Test Data Document81349-MIL-R-39008 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.).
Resistance Tolerance in Percent-5.000 TO 5.000
Electrical Resistance3.000 MEGOHMS
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 4
5905-00-011-6654 INTERCHANGEABLE
Resistor,fixed,composition
5905-00-104-8339 INTERCHANGEABLE
Resistor,fixed,composition
5905-00-120-0229 INTERCHANGEABLE
Resistor,fixed,composition
5905-00-279-2664 INTERCHANGEABLE
Resistor,fixed,composition
Cross-Reference Index
Part NumberManufacturer
RCR20G305FM Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
621330 Magna Tech Electronic Co Inc Dba Mte (USA)
JANR11TYPERC10BF Joint Electronics Type Designation System (USA)
301-0305-01 Tektronix, Inc. (USA)
RC20GF305J Marine Electric Systems Inc (USA)
MILR11A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
504B3MEG1/2WK Erie Specialty Products Inc (USA)
RCR20G305JS Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
EB3051 Rockwell Automation, Inc. Dba Rockwell Automation (USA)
RC20GF305K Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-39008/2 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RCR20G305JR Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RC20GF305J Ohmite Holding, L.l.c. Dba Ohmite Manufacturing (USA)
RCR20G305JM Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RCR20G305JP Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RCR20G305J Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5905PL0813839 Jednolity Indeks Materialowy - Uniform Material Index (POL)
Related Parts
5905-00-011-6654INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5905-00-104-8339INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5905-00-120-0229INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5905-00-279-2664INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION

Frequently Asked Questions

What is NSN 5905-00-435-6561?

NSN 5905-00-435-6561 is a Resistor,fixed,composition, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5905 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5905-00-435-6561?

NSN 5905-00-435-6561 has 17 cross-referenced part numbers: RCR20G305FM (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 621330 (Magna Tech Electronic Co Inc Dba Mte), JANR11TYPERC10BF (Joint Electronics Type Designation System), 301-0305-01 (Tektronix, Inc.), RC20GF305J (Marine Electric Systems Inc) and 12 more.

What NSN replaces 5905-00-435-6561?

There are 4 known substitutes for 5905-00-435-6561: 5905-00-011-6654, 5905-00-104-8339, 5905-00-120-0229 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of RCR20G305FM?

Key specifications for RCR20G305FM: Ambient Temp in Deg Celsius at Zero Percent Rated Power: 130.0; Ambient Temp at Full Rated Power: 70.0 CELSIUS DEGC; Cubic Measure: 0.007 CUBIC INCHES; Body Diameter: 0.138 INCHES NOMINAL IN. 16 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5905-00-435-6561 still in active supply?

NSN 5905-00-435-6561 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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