PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

643-1Relay,solid State

Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/ · NSN 5945-00-349-7028 · FSC 5945 · No Item Name Available
Verified by PartsTable
NSN 5945-00-349-7028 — this item is cataloged by the U.S. Government under National Stock Number 5945-00-349-7028. Primary manufacturer part number: 643-1.
Features
  • Relay,solid State — FSC 5945
  • 7 verified cross-references
  • Primary manufacturer: Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/
Applications
  • Circuit control and protection
  • Equipment power management
  • Signal routing
General Description

The Relay,solid State, cataloged under National Stock Number 5945-00-349-7028, 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 Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/. This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5945-00-349-7028
Primary Part Number643-1
Item NameRelay,solid State
FSC / FSG5945 / 59 — No Item Name Available
ManufacturerTeledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/
StatusCANCELLED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 12
5865-00-054-459316018 INTERCHANGEABLE
Housing,recorder
Drs C3 & Aviation Company Dba Drs Data & Imaging Systems
6680-00-085-7589643-1 INTERCHANGEABLE
Indicator,flow
Ametek Inc Schutte and Koerting Div
5905-00-115-8055 INTERCHANGEABLE
Resistor,fixed,composition
5950-00-137-4728990-016-91 INTERCHANGEABLE
Transformer,electri
Ametek Programmable Power, Inc.
3110-00-156-5451018-7804 INTERCHANGEABLE
Bearing,ball,annular
Marathon Le Tourneau Co
5310-00-209-1521 INTERCHANGEABLE
Washer,lock
5970-00-215-38941069981 INTERCHANGEABLE
Insulator,field Con
Chrysler Realty Company Llc Dba Daimler Chrysler
6130-00-235-1000SM-D-96985 INTERCHANGEABLE
Vibrator,interrupter
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4820-00-446-3237401341ITEM89 INTERCHANGEABLE
Valve,angle
Johnson Controls Navy Systems, Llc
2530-00-534-1508 INTERCHANGEABLE
Parts Kit,steering Axle
Cross-Reference Index
Part NumberManufacturer
8643-1 Struthers-Dunn Inc (USA)
643-1 Telcom Semiconductor Inc (USA)
1003935 Raytheon Technical Services Company (USA)
643-1 PRIMARY Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/ (USA)
16-018 Palomar Products, Inc. (USA)
74B059152 The Boeing Company Div Defense (USA)
880037-000-000 PRIMARY Eaton Electrical Inc. Dba Cuttler Hmmer Cmrcl Cntrls Div Div Vehicle Controls Business Unit (USA)
Related Parts
5865-00-054-4593INTERCHANGEABLE
HOUSING,RECORDER
16018
6680-00-085-7589INTERCHANGEABLE
INDICATOR,FLOW
643-1
5905-00-115-8055INTERCHANGEABLE
RESISTOR,FIXED,COMPOSITION
5950-00-137-4728INTERCHANGEABLE
TRANSFORMER,ELECTRI
990-016-91
3110-00-156-5451INTERCHANGEABLE
BEARING,BALL,ANNULAR
018-7804
5310-00-209-1521INTERCHANGEABLE
WASHER,LOCK
5970-00-215-3894INTERCHANGEABLE
INSULATOR,FIELD CON
1069981
6130-00-235-1000INTERCHANGEABLE
VIBRATOR,INTERRUPTER
SM-D-96985
4820-00-446-3237INTERCHANGEABLE
VALVE,ANGLE
401341ITEM89
2530-00-534-1508INTERCHANGEABLE
PARTS KIT,STEERING AXLE
5331-00-579-3163INTERCHANGEABLE
O-RING
0104-02-16
5950-00-583-4522INTERCHANGEABLE
TRANSFORMER,POWER AUTOTRANSFORME
10-60030-2

Frequently Asked Questions

What is NSN 5945-00-349-7028?

NSN 5945-00-349-7028 is a Relay,solid State, manufactured by Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/, classified under FSC 5945 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5945-00-349-7028?

NSN 5945-00-349-7028 has 7 cross-referenced part numbers: 8643-1 (Struthers-Dunn Inc), 643-1 (Telcom Semiconductor Inc), 1003935 (Raytheon Technical Services Company), 643-1 (Teledyne Defense Electronics, Llc Dba Teledyne Relays Div Https://www.teledyne.com/what-We-Do/), 16-018 (Palomar Products, Inc.) and 2 more.

What NSN replaces 5945-00-349-7028?

There are 12 known substitutes for 5945-00-349-7028: 5865-00-054-4593, 6680-00-085-7589, 5905-00-115-8055 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 643-1?

Key specifications for 643-1: Special Features: CONTACTS SPSTNO 65V DC 0.4 AMP,INPUT CURRENT 15 MILLIAMPS AT 10V DC,0.750 IN. LG,0.290 IN. W,0.265 IN. H,PLUG-IN MTG V. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5945-00-349-7028 still in active supply?

NSN 5945-00-349-7028 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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