PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

677491-078Headset-Microphone

Cohu, Inc. Dba Cohu Electronic's Division Div Electronics Division · NSN 5965-01-009-2238 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-01-009-2238 — this item is cataloged by the U.S. Government under National Stock Number 5965-01-009-2238. Primary manufacturer part number: 677491-078.
Features
  • Headset-Microphone — FSC 5965
  • Impedance Rating: 300.0 OHMS NOMINAL
  • Earphone Quantity: 2
  • Earphone Element Type: DYNAMIC
  • Controlling Agency: COHU ELECTRONICS INC
  • Connector to Junction Cord Length: 5.833 FEET FT
  • Output Level Rating: 82 DB DB
  • Microphone Element Type: DYNAMIC
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Headset-Microphone, cataloged under National Stock Number 5965-01-009-2238, is classified within Federal Supply Class 5965 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Cohu, Inc. Dba Cohu Electronic's Division Div Electronics Division. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5965-01-009-2238
Primary Part Number677491-078
Item NameHeadset-Microphone
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerCohu, Inc. Dba Cohu Electronic's Division Div Electronics Division
StatusACTIVE
Impedance Rating300.0 OHMS NOMINAL
Earphone Quantity2
Earphone Element TypeDYNAMIC
Controlling AgencyCOHU ELECTRONICS INC
Connector to Junction Cord Length5.833 FEET FT
Output Level Rating82 DB DB
Microphone Element TypeDYNAMIC
Connector Identifying Number71-55 PART NO.
Microphone Mounting FacilityBOOM ADAPTER ON LEFT SIDE OF HEADBAND
Mounting MethodSUSPENDED ON ADJUSTABLE HEADBAND EARPHONE
Earphone Identifying Number677491-078 DRAWING NO.
Earphone Impedance Rating600.0 OHMS NOMINAL
Connector Controlling AgencyBUNKER RAMO CORP
Earphone Controlling AgencyCOHU ELECTRONICS INC
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5975-00-615-91695237 INTERCHANGEABLE
Box Connector,electrical
Abb Installation Products Inc
6515-01-139-9084 INTERCHANGEABLE
Clip,hemostatic
6515-01-390-9598LT200 INTERCHANGEABLE
Clip,hemostatic
Ethicon Us Llc Div Ethicon
Cross-Reference Index
Part NumberManufacturer
677491-078 Cohu, Inc. Dba Cohu Electronic's Division Div Electronics Division (USA)
LT-200 Avid Corp (USA)
Related Parts
5975-00-615-9169INTERCHANGEABLE
BOX CONNECTOR,ELECTRICAL
5237
6515-01-139-9084INTERCHANGEABLE
CLIP,HEMOSTATIC
6515-01-390-9598INTERCHANGEABLE
CLIP,HEMOSTATIC
LT200

Frequently Asked Questions

What is NSN 5965-01-009-2238?

NSN 5965-01-009-2238 is a Headset-Microphone, manufactured by Cohu, Inc. Dba Cohu Electronic's Division Div Electronics Division, classified under FSC 5965 (No Item Name Available). Status: active.

What are the part numbers for NSN 5965-01-009-2238?

NSN 5965-01-009-2238 has 2 cross-referenced part numbers: 677491-078 (Cohu, Inc. Dba Cohu Electronic's Division Div Electronics Division), LT-200 (Avid Corp).

What NSN replaces 5965-01-009-2238?

There are 3 known substitutes for 5965-01-009-2238: 5975-00-615-9169, 6515-01-139-9084, 6515-01-390-9598. Verify interchangeability with system specifications before substitution.

What are the specifications of 677491-078?

Key specifications for 677491-078: Impedance Rating: 300.0 OHMS NOMINAL; Earphone Quantity: 2; Earphone Element Type: DYNAMIC; Controlling Agency: COHU ELECTRONICS INC. 14 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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