Western Electric type 403B pentode
date: label: date made
content: 1948
name: label: maker
content: Western Electric
notes: label: Description (Brief)
content: A 7-pin glass base with tipped T-shaped envelope. Miniature tube. Stamped: "Western / Electric / 403B / Made in U.S.A. / 5752". Donor’s card reads: “Pentode made by the Western Electric Company in 1948 for use as an amplifier in high and ultra-high frequency circuits. Similar to the type 5591 tube. Differs from the type 403A [catalog number 324869] in that the eater current is 150 milliamps instead of 175. Otherwise interchangeable.” See also: https://www.radiomuseum.org/tubes/tube_403b.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
creditLine: label: Credit Line
content: from Paul G. Watson
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.324870
label: catalog number
content: 324870
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: pentode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 1 3/4 in x 5/8 in; 4.445 cm x 1.5875 cm