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Technical Data Sheet
PartsTable / COMPONENT / 772947-4
772947-4 ✓ 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

The RELAY,ELECTROMAGNETIC is a the manufacturer industrial component. Key specifications include duty_type: CONTINUOUS, storage_type: GENERAL PURPOSE WAREHOUSE, overall_length: 0.280 INCHES MAXIMUM IN, fragility_factor: MODERATELY RUGGED, overall_diameter: 0.335 INCHES MAXIMUM IN, arc_quenching_method: AIR. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-435-1184, 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
772947-4
NSN: 5945-00-435-1184
FSC: 5945
CAGE: 96214 — RAYTHEON COMPANY DBA RAYTHEON (USA)
SPECIFICATIONS
duty_typeCONTINUOUS
storage_typeGENERAL PURPOSE WAREHOUSE
coil_quantity1
overall_length0.280 INCHES MAXIMUM IN
fragility_factorMODERATELY RUGGED
overall_diameter0.335 INCHES MAXIMUM IN
winding_quantity1
arc_quenching_methodAIR
environmental_protectionHERMETIC
purpose_for_which_designedGENERAL
terminal_type_and_quantity8 WIRE LEAD ALL FUNCTIONS
nondefinitive_spec/std_dataNO. -5757/40-004 PART
NSN5945-00-435-1184
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available RELAY,ELECTROMAGNETIC TITLE COMPONENT PN 772947-4 MFR RELAY,ELECTROMAGNETIC
KEY FEATURES
•
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
•
TEST DATA DOCUMENT: 81349-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.).
TECHNICAL CHARACTERISTICS (FLIS)
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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
5945001368399Interchangeable
interchangeable cross-reference
interchangeable
990334-1Interchangeable
interchangeable cross-reference
interchangeable
640-020-030Interchangeable
interchangeable cross-reference
interchangeable
M5757/40-003Interchangeable
interchangeable cross-reference
interchangeable
974-0083-030Interchangeable
interchangeable cross-reference
interchangeable
MIL-R-5757/40Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 772947-4?
772947-4 is a RELAY,ELECTROMAGNETIC.
What parts can replace 772947-4?
There are 20 known substitutes for 772947-4: 5945001368399, 990334-1, 640-020-030 and 17 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 772947-4?
772947-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5945-00-435-1184. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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Last verified: July 2026