PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A771ARelay,electromagnetic

Te Connectivity Corporation · NSN 5945-00-643-6869 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-643-6869 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-643-6869. Primary manufacturer part number: A771A.
Features
  • Relay,electromagnetic — FSC 5945
  • Operating Voltage Rating and Type at Specified Temp: 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
  • Terminal Type and Quantity: 4 PIN ALL FUNCTIONS
  • Unthreaded Mounting Hole Diameter: 0.196 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
  • Nonpile-Up Main Contact Arrangement: 1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
  • Main Contact Maximum Voltage Rating in Volts: 28.0 DC
  • Main Contact Load Current Rating at Maximum Rated Voltage: 300.0 AMPERES DC RESISTIVE LOAD
  • Center to Center Distance Between Mounting Facilities Parallel to Length: 3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,electromagnetic, cataloged under National Stock Number 5945-00-643-6869, 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 Te Connectivity Corporation. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5945-00-643-6869
Primary Part NumberA771A
Item NameRelay,electromagnetic
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTe Connectivity Corporation
StatusACTIVE
Operating Voltage Rating and Type at Specified Temp28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Terminal Type and Quantity4 PIN ALL FUNCTIONS
Unthreaded Mounting Hole Diameter0.196 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Nonpile-Up Main Contact Arrangement1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Main Contact Maximum Voltage Rating in Volts28.0 DC
Main Contact Load Current Rating at Maximum Rated Voltage300.0 AMPERES DC RESISTIVE LOAD
Center to Center Distance Between Mounting Facilities Parallel to Length3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Winding Quantity1
Mounting Facility Type and Quantity4 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Coil Quantity1
Center to Center Distance Between Mounting Facilities Parallel to Width3.000 INCHES NOMINAL SINGLE MOUNTING FACILITY IN
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Environmental ProtectionDUSTPROOF
Winding DC Resistance Rating96.0 OHMS NOMINAL SINGLE WINDING
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5962-01-175-5862PA-6321 INTERCHANGEABLE
Microcircuit,linear
Caes Systems Llc Div Missile Systems Division
Cross-Reference Index
Part NumberManufacturer
A771A PRIMARY Te Connectivity Corporation (USA)
Related Parts
5962-01-175-5862INTERCHANGEABLE
MICROCIRCUIT,LINEAR
PA-6321

Frequently Asked Questions

What is NSN 5945-00-643-6869?

NSN 5945-00-643-6869 is a Relay,electromagnetic, manufactured by Te Connectivity Corporation, classified under FSC 5945 (No Item Name Available). Status: active.

What are the part numbers for NSN 5945-00-643-6869?

NSN 5945-00-643-6869 has 1 cross-referenced part number: A771A (Te Connectivity Corporation).

What NSN replaces 5945-00-643-6869?

There is 1 known substitute for 5945-00-643-6869: 5962-01-175-5862. Verify interchangeability with system specifications before substitution.

What are the specifications of A771A?

Key specifications for A771A: Operating Voltage Rating and Type at Specified Temp: 28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING; Overall Width: 4.000 INCHES NOMINAL IN; Terminal Type and Quantity: 4 PIN ALL FUNCTIONS; Unthreaded Mounting Hole Diameter: 0.196 INCHES NOMINAL SINGLE MOUNTING FACILITY IN. 19 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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