M643-1

View detailed technical data, stock status, and sourcing information for: M643-1
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Federal Supply Group

Electrical and Electronic Equipment Components

Federal Supply Classification

5945 Relays and Solenoids

National Stock Number

5945-01-349-5477

Item Name Code

31446

Assigment Date

11/28/1991 (34 years ago)

spstno; hermetically sealed; input voltage range: 4.0 vdc to 7.0 vdc; turn on time: 10.0 microseconds; turn off time: 15.0 microseconds; operating temperature: negative 55.0 degree celsius to positive 125.0 degree celsius; input current: 22.0 ma dc max; power dissipation: 260.0 milliwatts; 4 wire lead terminals; dimensions: length 0.275 inches max,diameter 0.370 inches max special features, 81349-mil-r-28750/6 government specification specification/standard data

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Special Features: spstno; hermetically sealed; input voltage range: 4.0 vdc to 7.0 vdc; turn on time: 10.0 microseconds; turn off time: 15.0 microseconds; operating temperature: negative 55.0 degree celsius to positive 125.0 degree celsius; input current: 22.0 ma dc max; power dissipation: 260.0 milliwatts; 4 wire lead terminals; dimensions: length 0.275 inches max,diameter 0.370 inches max
Specification/Standard Data: 81349-mil-r-28750/6 government specification

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5945-01-035-3940	No Name Available	04/28/2017
5945-01-118-0582	No Name Available	09/01/1998
5945-01-318-8107	No Name Available	06/01/2006

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
M28750/6-001W	Solid State Relay
M28750/6-001Y	Solid State Relay
M643-1	Solid State Relay
MIL-PRF-28750/6	Solid State Relay

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5945-01-349-5477?

The FSCG of the NSN 5945-01-349-5477 is 5945

Does NSN 5945-01-349-5477 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5945-01-349-5477 contain precious materials?

Item does not contain precious metal.

Does NSN 5945-01-349-5477 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5945-01-349-5477 was assigned to the Federal Catalog?

It was assigned 34 years ago, on Thu, Nov 28, 1991