PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

772947-4Relay,electromagnetic

Raytheon Company Dba Raytheon · NSN 5945-00-435-1184 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-435-1184 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-435-1184. Primary manufacturer part number: 772947-4.
Features
  • Relay,electromagnetic — FSC 5945
  • Terminal Type and Quantity: 8 WIRE LEAD ALL FUNCTIONS
  • Arc Quenching Method: AIR
  • Duty Type: CONTINUOUS
  • Specification/standard Data: 81349-MIL-R-5757/40 GOVERNMENT SPECIFICATION
  • Main Contact Maximum Voltage Rating in Volts: 28.0 DC
  • Winding DC Resistance Rating: 880.0 OHMS NOMINAL SINGLE WINDING
  • Operating Voltage Rating and Type at Specified Temp: 18.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-435-1184, is classified within Federal Supply Class 5945 (No Item Name Available) of the Electrical and Electronic Equipment Components group. The primary manufacturer of record is Raytheon Company Dba Raytheon. Government technical data includes 20 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-435-1184
Primary Part Number772947-4
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerRaytheon Company Dba Raytheon
StatusACTIVE
Terminal Type and Quantity8 WIRE LEAD ALL FUNCTIONS
Arc Quenching MethodAIR
Duty TypeCONTINUOUS
Specification/standard Data81349-MIL-R-5757/40 GOVERNMENT SPECIFICATION
Main Contact Maximum Voltage Rating in Volts28.0 DC
Winding DC Resistance Rating880.0 OHMS NOMINAL SINGLE WINDING
Operating Voltage Rating and Type at Specified Temp18.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Test Data Document81349-MIL-R-5757 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.).
Main Contact Load Current Rating at Maximum Rated Voltage100.0 MILLIAMPERES DC LAMP LOAD
Nondefinitive Spec/std DataNO. -5757/40-004 PART
Purpose for Which DesignedGENERAL
Coil Quantity1
Environmental ProtectionHERMETIC
Winding Quantity1
Fragility FactorMODERATELY RUGGED
Overall Diameter0.335 INCHES MAXIMUM IN
Main Contact Load Current Rating at Maximum Rated Voltage1.0 AMPERES DC RESISTIVE LOAD
Storage TypeGENERAL PURPOSE WAREHOUSE
Mounting Facility Type and Quantity1 TERMINAL SINGLE MOUNTING FACILITY
Nonpile-Up Main Contact Arrangement2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5945-00-136-8399 INTERCHANGEABLE
Relay,electromagnetic
5945-00-253-0239 INTERCHANGEABLE
Relay,electromagnetic
5945-00-403-3905 INTERCHANGEABLE
Relay,electromagnetic
5945-00-405-3906 INTERCHANGEABLE
Relay,electromagnetic
5945-00-458-3157 INTERCHANGEABLE
Relay,electromagnetic
5905-01-047-1559 INTERCHANGEABLE
Resistor,variable,nonwire Wound,
5945-01-117-0523 INTERCHANGEABLE
Relay,electromagnetic
5945-01-117-2546 INTERCHANGEABLE
Relay,electromagnetic
Cross-Reference Index
Part NumberManufacturer
772947-4 Raytheon Company Dba Raytheon (USA)
538113-4 Raytheon Company Dba Raytheon (USA)
M5757/40-004 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-R-5757/40 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
412-6508 Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/ (USA)
Related Parts
5945-00-136-8399INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-253-0239INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-403-3905INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-405-3906INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-00-458-3157INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5905-01-047-1559INTERCHANGEABLE
RESISTOR,VARIABLE,NONWIRE WOUND,
5945-01-117-0523INTERCHANGEABLE
RELAY,ELECTROMAGNETIC
5945-01-117-2546INTERCHANGEABLE
RELAY,ELECTROMAGNETIC

Frequently Asked Questions

What is NSN 5945-00-435-1184?

NSN 5945-00-435-1184 is a Relay,electromagnetic, manufactured by Raytheon Company Dba Raytheon, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-435-1184?

NSN 5945-00-435-1184 has 5 cross-referenced part numbers: 772947-4 (Raytheon Company Dba Raytheon), 538113-4 (Raytheon Company Dba Raytheon), M5757/40-004 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-R-5757/40 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 412-6508 (Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/).

What NSN replaces 5945-00-435-1184?

There are 8 known substitutes for 5945-00-435-1184: 5945-00-136-8399, 5945-00-253-0239, 5945-00-403-3905 and 5 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 772947-4?

Key specifications for 772947-4: Terminal Type and Quantity: 8 WIRE LEAD ALL FUNCTIONS; Arc Quenching Method: AIR; Duty Type: CONTINUOUS; Specification/standard Data: 81349-MIL-R-5757/40 GOVERNMENT SPECIFICATION. 21 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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