Philips type E438 "Miniwatt" receiving triode
date: label: date made
content: ca 1928
name: label: maker
content: Philips
notes: label: Description (Brief)
content: A 5-pin, black plastic base, tipless S-shaped envelop with gold coating. Stamped on top: "Philips / E438 / * Miniwatt * / (4.) B". Groenendijk Collection #5m-53(2). Reference: https://www.radiomuseum.org/tubes/tube_e438.html.
label: Location
content: Currently not on view
setName: label: See more items in
content: Work and Industry: Electricity
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: EM.315584
label: catalog number
content: 315584
label: accession number
content: 216300
objectType: label: Object Name
content: Electron Tube
label: Object Name
content: triode
label: Other Terms
content: Electron Tube; Electron Tubes
physicalDescription: label: Measurements
content: overall: 4 1/2 in x 1 3/4 in; 11.43 cm x 4.445 cm