Western Electric type 249A diode
date: label: date made
content: ca 1933
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A plastic 4-pin base, anode contact without ceramic insulator on top, S-shaped envelope. Marked: "Western Electric / Made in U.S.A. / 249 A", and "2154". "A half-wave, thermionic, mercury-vapor rectifier for use in rectifying circuits designed to supply direct current from an alternating current supply." Reference: https://www.westernelectric.com/s/249A.pdf.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Franklin Wingard
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.322697
label: catalog number
content: 322697
label: accession number
content: 241556
objectType: label: Object Name
content: rectifier
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 6 1/2 in x 2 3/8 in; 16.51 cm x 6.0325 cm