PartsTable
Technical Data Sheet
PartsTable / COMPONENT / SM-C-208021
SM-C-208021 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

RESISTOR,VARIABLE,NONWIRE WOUND,. Key specifications include body_style: EARPHONE ELEMENT, CIRCULAR, overall_diameter: 1.822 INCHES MAXIMUM IN, earphone_element_type: MAGNETIC, earphone_element_depth: 0.750 INCHES NOMINAL IN, impedance_rating_in_ohms: 150.0 NOMINAL, frequency_response_range_in_hertz: +500.0 TO 2500.0. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5965-00-549-0220, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
SM-C-208021
NSN: 5965-00-549-0220
FSC: 5965
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
body_styleEARPHONE ELEMENT, CIRCULAR
overall_diameter1.822 INCHES MAXIMUM IN
special_featuresMAGNETIC TYPE ELEMENT HAS A DIAMETER OF 1.822 IN. BY 0.750 IN. DEEP; IMPEDANCE 150 OHMS NOMINAL; ELEMENT IS USED IN MIL-SPEC HANDSETS SUCH AS THE H-60/PT AND THE H-156/PT IN
earphone_element_typeMAGNETIC
earphone_element_depth0.750 INCHES NOMINAL IN
impedance_rating_in_ohms150.0 NOMINAL
frequency_response_range_in_hertz+500.0 TO 2500.0
acoustic_sensitivity_reference_rating1 VOLT PER MICROBAR
output_sensitivity_rating_in_decibels72.0
NSN5965-00-549-0220
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RESISTOR,VARIABLE,NONWIRE WOUND, TITLE COMPONENT PN SM-C-208021 MFR RESISTOR,VARIABLE,NONW
KEY FEATURES
•
BODY STYLE: EARPHONE ELEMENT, CIRCULAR
•
EARPHONE ELEMENT DEPTH: 0.750 INCHES NOMINAL IN
•
IMPEDANCE RATING IN OHMS: 150.0 NOMINAL
•
EARPHONE ELEMENT TYPE: MAGNETIC
•
OUTPUT SENSITIVITY RATING IN DECIBELS: 72.0
•
TEST DATA DOCUMENT: 81349-MIL-H-11996 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.).
•
FREQUENCY RESPONSE RANGE IN HERTZ: +500.0 TO 2500.0
TECHNICAL CHARACTERISTICS (FLIS)
BODY STYLEEARPHONE ELEMENT, CIRCULAR
EARPHONE ELEMENT DEPTH0.750 INCHES NOMINAL IN
IMPEDANCE RATING IN OHMS150.0 NOMINAL
EARPHONE ELEMENT TYPEMAGNETIC
OUTPUT SENSITIVITY RATING IN DECIBELS72.0
TEST DATA DOCUMENT81349-MIL-H-11996 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.).
SPECIAL FEATURESMAGNETIC TYPE ELEMENT HAS A DIAMETER OF 1.822 IN. BY 0.750 IN. DEEP; IMPEDANCE 150 OHMS NOMINAL; ELEMENT IS USED IN MIL-SPEC HANDSETS SUCH AS THE H-60/PT AND THE H-156/PT IN
FREQUENCY RESPONSE RANGE IN HERTZ+500.0 TO 2500.0
OVERALL DIAMETER1.822 INCHES MAXIMUM IN
ACOUSTIC SENSITIVITY REFERENCE RATING1 VOLT PER MICROBAR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 27
105127Interchangeable
interchangeable cross-reference
interchangeable
87-0502Interchangeable
interchangeable cross-reference
interchangeable
107403Interchangeable
interchangeable cross-reference
interchangeable
42294Interchangeable
interchangeable cross-reference
interchangeable
10-527Interchangeable
interchangeable cross-reference
interchangeable
BR4319Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is SM-C-208021?
SM-C-208021 is a RESISTOR,VARIABLE,NONWIRE WOUND,.
What parts can replace SM-C-208021?
There are 27 known substitutes for SM-C-208021: 105127, 87-0502, 107403 and 24 more. Substitute compatibility should be verified for your specific system.
Is SM-C-208021 still available?
SM-C-208021 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026