PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

CM20B221KCapacitor,fixed,mica Dielectric

Polarad Electronics Corp Radiometrics Div · NSN 5910-00-725-1994 · FSC 5910 · No Item Name Available
Verified by PartsTable
NSN 5910-00-725-1994 — this item is cataloged by the U.S. Government under National Stock Number 5910-00-725-1994. Primary manufacturer part number: CM20B221K.
Features
  • Capacitor,fixed,mica Dielectric — FSC 5910
  • Insulation Resistance at Maximum Operating Temp: 10000.0 MEGOHMS
  • Body Height: 0.300 INCHES NOMINAL IN
  • Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD
  • Body Length: 0.520 INCHES NOMINAL IN
  • Nonderated Continuous Voltage Rating and Type Per Section: 500.0 DC SINGLE SECTION
  • Body Width: 0.190 INCHES NOMINAL IN
  • Schematic Diagram Designator: NO COMMON OR GROUNDED ELECTRODE(S)
Applications
  • Circuit regulation and filtering
  • Signal conditioning
  • Power supply stabilization
  • Applications requiring Plastic Case construction
General Description

The Capacitor,fixed,mica Dielectric, cataloged under National Stock Number 5910-00-725-1994, is classified within Federal Supply Class 5910 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Polarad Electronics Corp Radiometrics Div. Government technical data includes 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 50 commercial cross-references from 14 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5910-00-725-1994
Primary Part NumberCM20B221K
Item NameCapacitor,fixed,mica Dielectric
FSC / FSG5910 / 59 — No Item Name Available
ManufacturerPolarad Electronics Corp Radiometrics Div
StatusCANCELLED
Insulation Resistance at Maximum Operating Temp10000.0 MEGOHMS
Body Height0.300 INCHES NOMINAL IN
Terminal Type and Quantity2 UNINSULATED WIRE LEAD
Body Length0.520 INCHES NOMINAL IN
Nonderated Continuous Voltage Rating and Type Per Section500.0 DC SINGLE SECTION
Body Width0.190 INCHES NOMINAL IN
Schematic Diagram DesignatorNO COMMON OR GROUNDED ELECTRODE(S)
Test Data Document81349-MIL-C-5 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.).
Tolerance Range Per Section-2.00 TO 2.00 PERCENT SINGLE SECTION
Nonderated Operating Temp-55.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM DEGC
Terminal Length1.120 INCHES MINIMUM IN
Temp Coefficient of Capacitance Range Per Section in Ppm Per Deg Celsius+0.0 TO 70.0 SINGLE SECTION
Capacitance Value Per Section220.000 PICOFARADS SINGLE SECTION
MaterialPLASTIC CASE
Terminal Surface TreatmentSOLDER
Insulation Resistance at Reference Temp100000.0 MEGOHMS
Dissipation Factor at Reference Temp in Percent0.0007
Reliability IndicatorNOT ESTABLISHED
Body StyleW/O MTG FACILITIES, TERMINALS ON OPPOSITE SURFACES
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5910-00-023-8467 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5910-00-067-4388 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5910-00-101-5629 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5940-00-156-7196MS77072-2 INTERCHANGEABLE
Terminal,lug
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5940-00-204-78001180-102 INTERCHANGEABLE
Terminal,lug
Dne Technologies, Inc
5945-00-274-5686 INTERCHANGEABLE
Relay,electromagnetic
5330-00-285-3330146-6 INTERCHANGEABLE
Seal,plain Encased
Mack Trucks Inc Parts Opn
3020-00-287-8771 INTERCHANGEABLE
Gear,spur
5910-00-348-3817 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
5910-00-491-4686 INTERCHANGEABLE
Capacitor,fixed,mica Dielectric
Cross-Reference Index
Part NumberManufacturer
CM20B221K Polarad Electronics Corp Radiometrics Div (USA)
CM20B221K Electro Motive Corp Subsidiary of International Electronics Corp (USA)
CM15FD221GO3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RCM15E221J Rheinlander, Robert M (USA)
CM15C221KN3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CM15D221K3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
K21322E5 L3 Aviation Products, Inc. Dba L3 Technologies (USA)
CM15B221K03 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
0140-0031 Keysight Technologies, Inc. (USA)
CM20B221K Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CM20E221G Smith a O Corp Crowley Div (USA)
CM15F221G03 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
RR1322 L3 Aviation Products, Inc. Dba L3 Technologies (USA)
CM15CD221JN3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
K1322B10 Cornell-Dubilier Marketing Inc (USA)
CM15ED221GN3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CM20E221J Electro Motive Corp Subsidiary of International Electronics Corp (USA)
CM15E221J03 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
CM15FD221JN3 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
5910007251994 E.c.a Etablissement Centrald'approvisionnement Des Forces Armee
Related Parts
5910-00-023-8467INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5910-00-067-4388INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5910-00-101-5629INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5940-00-156-7196INTERCHANGEABLE
TERMINAL,LUG
MS77072-2
5940-00-204-7800INTERCHANGEABLE
TERMINAL,LUG
1180-102
5945-00-274-5686INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5330-00-285-3330INTERCHANGEABLE
SEAL,PLAIN ENCASED
146-6
3020-00-287-8771INTERCHANGEABLE
GEAR,SPUR
5910-00-348-3817INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5910-00-491-4686INTERCHANGEABLE
CAPACITOR,FIXED,MICA DIELECTRIC
5930-00-592-1681INTERCHANGEABLE
SWITCH,ROTARY
2265699
5365-00-598-5322INTERCHANGEABLE
BUSHING,NONMETALLIC
1466

Frequently Asked Questions

What is NSN 5910-00-725-1994?

NSN 5910-00-725-1994 is a Capacitor,fixed,mica Dielectric, manufactured by Polarad Electronics Corp Radiometrics Div, classified under FSC 5910 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5910-00-725-1994?

NSN 5910-00-725-1994 has 50 cross-referenced part numbers: CM20B221K (Polarad Electronics Corp Radiometrics Div), CM20B221K (Electro Motive Corp Subsidiary of International Electronics Corp), CM15FD221GO3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), RCM15E221J (Rheinlander, Robert M), CM15C221KN3 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M) and 45 more.

What NSN replaces 5910-00-725-1994?

There are 12 known substitutes for 5910-00-725-1994: 5910-00-023-8467, 5910-00-067-4388, 5910-00-101-5629 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of CM20B221K?

Key specifications for CM20B221K: Insulation Resistance at Maximum Operating Temp: 10000.0 MEGOHMS; Body Height: 0.300 INCHES NOMINAL IN; Terminal Type and Quantity: 2 UNINSULATED WIRE LEAD; Body Length: 0.520 INCHES NOMINAL IN. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5910-00-725-1994 still in active supply?

NSN 5910-00-725-1994 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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