RCA type 9004 "acorn" diode
date: label: date made
content: ca 1943
name: label: maker
content: Radio Corporation of America
notes: label: Description (Brief)
content: A small glass tube, no base, one end tipped, 3 contact pins on one side, 2 pins on the opposite side. Donor’s card reads: “Diode made by the Radio Corporation of America for the US government during World War II. For detector service in the ultra high frequencies. Heater type: 6.3 volts at .15 ampere. Maximum RMS anode voltage 117, current 5 milliamperes.” See also: https://www.radiomuseum.org/tubes/tube_9004.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.324720
label: catalog number
content: 324720
label: accession number
content: 252994
objectType: label: Object Name
content: Electron Tube, Diode
label: Object Name
content: diode
label: Other Terms
content: Electron Tube, Diode; Electron Tubes
physicalDescription: label: Measurements
content: overall: 1 1/4 in x 1 1/4 in; 3.175 cm x 3.175 cm