PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H78CAICHeadset-Microphone

Joint Electronics Type Designation System · NSN 5965-00-577-6215 · FSC 5965 · No Item Name Available
Verified by PartsTable
NSN 5965-00-577-6215 — this item is cataloged by the U.S. Government under National Stock Number 5965-00-577-6215. Primary manufacturer part number: H78CAIC.
Features
  • Headset-Microphone — FSC 5965
  • Connector Controlling Agency: JETDS
  • Controlling Agency: JETDS
  • Earphone Quantity: 2
  • Earphone Impedance Rating: 20.0 OHMS NOMINAL
  • Identifying Number: M-33A/AIC TYPE NO. A
  • Connector Identifying Number: U-93A/U TYPE NO. A
  • Mounting Method: SUSPENDED ON HEADBAND EARPHONE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Headset-Microphone, cataloged under National Stock Number 5965-00-577-6215, 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 Joint Electronics Type Designation System. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5965-00-577-6215
Primary Part NumberH78CAIC
Item NameHeadset-Microphone
FSC / FSG5965 / 59 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusACTIVE
Connector Controlling AgencyJETDS
Controlling AgencyJETDS
Earphone Quantity2
Earphone Impedance Rating20.0 OHMS NOMINAL
Identifying NumberM-33A/AIC TYPE NO. A
Connector Identifying NumberU-93A/U TYPE NO. A
Mounting MethodSUSPENDED ON HEADBAND EARPHONE
Earphone Identifying NumberH-143/AIC TYPE NO.
Microphone Element TypeDYNAMIC
Microphone Mounting FacilityBRACKET FASTENED TO HEADBAND
Connector to Junction Cord Length3.000 FEET FT
Earphone Controlling AgencyJETDS
Impedance Rating3.0 OHMS NOMINAL
Frequency Rating0.1 KILOHERTZ MINIMUM AND 5.0 KILOHERTZ MAXIMUM
Earphone Element TypeDYNAMIC
Output Level Rating115 DB BELOW 1 V V
Connector NamePLUG
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5905-00-233-1972 INTERCHANGEABLE
Resistor Set,matched
5815-00-537-7673SC-C-69897 INTERCHANGEABLE
Bar,selector,teletypewriter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5962-00-632-8155DS7836J INTERCHANGEABLE
Microcircuit,linear
National Semiconductor Corporation
5930-00-758-522610-322 INTERCHANGEABLE
Switch,sensitive
Illinois Tool Works Inc
5965-00-860-895461B21712 INTERCHANGEABLE
Cushion,ear
Air Force Lifecycle Management Center Electronic Components (aflcmc/ezss)
5310-00-984-3806 INTERCHANGEABLE
Nut,self-Locking,hexagon
5133-00-988-570918678 OLE PRO INTERCHANGEABLE
Drill,twist
General Services Administration Federal Supply Service
7930-01-069-329201289273 INTERCHANGEABLE
Rinse Additive,dishwashing
Johnsondiversey Inc Dba Dubois Chemicals
3120-01-163-8335NC010322 INTERCHANGEABLE
Bushing,sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
5999-01-199-4852 INTERCHANGEABLE
Mounting Pad,electrical-Electron
Cross-Reference Index
Part NumberManufacturer
H78CAIC Joint Electronics Type Designation System (USA)
MILH26312A Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
10322 Roanwell, Llc (USA)
H78CA1C Joint Electronics Type Designation System (USA)
Related Parts
5905-00-233-1972INTERCHANGEABLE
RESISTOR SET,MATCHED
5815-00-537-7673INTERCHANGEABLE
BAR,SELECTOR,TELETYPEWRITER
SC-C-69897
5962-00-632-8155INTERCHANGEABLE
MICROCIRCUIT,LINEAR
DS7836J
5930-00-758-5226INTERCHANGEABLE
SWITCH,SENSITIVE
10-322
5965-00-860-8954INTERCHANGEABLE
CUSHION,EAR
61B21712
5310-00-984-3806INTERCHANGEABLE
NUT,SELF-LOCKING,HEXAGON
5133-00-988-5709INTERCHANGEABLE
DRILL,TWIST
18678 OLE PRO
7930-01-069-3292INTERCHANGEABLE
RINSE ADDITIVE,DISHWASHING
01289273
3120-01-163-8335INTERCHANGEABLE
BUSHING,SLEEVE
NC010322
5999-01-199-4852INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
5950-01-347-4104INTERCHANGEABLE
TRANSFORMER,POWER
10322
4730-01-503-2774INTERCHANGEABLE
CLAMP,HOSE
10-322

Frequently Asked Questions

What is NSN 5965-00-577-6215?

NSN 5965-00-577-6215 is a Headset-Microphone, manufactured by Joint Electronics Type Designation System, classified under FSC 5965 (No Item Name Available). Status: active.

What are the part numbers for NSN 5965-00-577-6215?

NSN 5965-00-577-6215 has 4 cross-referenced part numbers: H78CAIC (Joint Electronics Type Designation System), MILH26312A (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 10322 (Roanwell, Llc), H78CA1C (Joint Electronics Type Designation System).

What NSN replaces 5965-00-577-6215?

There are 12 known substitutes for 5965-00-577-6215: 5905-00-233-1972, 5815-00-537-7673, 5962-00-632-8155 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H78CAIC?

Key specifications for H78CAIC: Connector Controlling Agency: JETDS; Controlling Agency: JETDS; Earphone Quantity: 2; Earphone Impedance Rating: 20.0 OHMS NOMINAL. 17 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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