as a guide only – please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application. ECC85 Ratings. Page 1. Page 2. Page 3. ECC85 Datasheet PDF Download – Double Triode, ECC85 data sheet.
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Special quality variants may have the letters “SQ” appended, or the device description letters may be swapped with the numerals e. Die Schaltungstechnik der Vorstufe und dataseet verschiedenen Schaltungen. Note datasheft elevating the cathode voltage above the average heater voltage, which in well-designed equipment was supplied from a transformer with an earthed center-tapped secondary, was less detrimental to the oxide insulation between heater and cathode than lowering the cathode voltage below the heater voltage, helping to prevent pyrometallurgical electrolytic chemical reactions where the oxide touched the nickel cathode that could form conductive aluminium tungstate and which could ultimately develop into a heater-cathode short-circuit.
Some manufacterers preceded the EIA number with a manufacterer’s code:. The shield was connected to the cathode. Collection of Werner Wussow D.
ECC85 Datasheet PDF –
While the E80F pentode was a high quality development of the EF80, they were not pin-compatible and could not be interchanged without rewiring the socket the E80F is commonly ecf85 after as a high quality replacement for the similar EF86 type in guitar amplifiers.
Archived from the original PDF on 9 March Collection of Jacky Parmentier F. Media related to Eimac vacuum tubes at Wikimedia Commons. All of them use indirectly heated cathodes.
Later special-quality tubes had not base and function dataseet but were assigned a 4-digit number,  such as ECC or ED, the first digit of which again denoting the base:.
Collection of Ekkehard Pfau D. This page was last edited on 22 Decemberat Valvo deit was a major German electronic components manufacturer from to ; a Philips subsidiary sinceValvo was one of the predecessors of NXP Semiconductors.
Since with a Faravahar logo related to Ahura Mazda: Retrieved 12 February Collection of Roland Biesler D. The first element is a number specifying filament voltage. Heater or filament rating . This system is very descriptive of what type of device triode, diode, pentode etc. A” PDF in French. It was phased out after when Philips adopted the Mullard—Philips scheme.
All of them incorporate at least one rectifier diode. The British GEC — Marconi—Osram designation from the s uses one or two letter s followed by two numerals and sometimes by a second letter identifying different versions of a particular type.
This is a list of vacuum tubes or thermionic valvesand low-pressure gas-filled tubesor discharge tubes. Used in s home radios. Retrieved 17 May Rundfunk- und Fernmelde-Technik desv was the brand of a group of telecommunications manufacturers in the German Democratic Republic. Like the British military system, these have many direct equivalents in the civilian types. If two devices share the same type designation other than the first letter e.
Special-quality datahseet “Z” tubes had a different function letter scheme. Dxtasheet ist als Anlage hier zu lesen. Three- and four-digit numeral-only systems were maintained by Datassheet. The Bell system technical journal.
Older Mullard tubes were mostly designated PMfollowed by a number containing the filament voltage. Archived from the original PDF on 12 October Dayasheet End of forum contributions about this tube. You will find thousands of tubes or valves with interesting links. Grigsby-Grunow did not shield rectifier tubes except for type 6Y5 listed below or power output tubes. Federal communication laboratoriesInc.
Stock/Availability for: ECC85/6H1P/6N1P
The numbers datasgeet these prefixes can be “special” four-digit numbers, or domestic two- or three-digit numbers or simply the domestic North American “RETMA” numbering system. High-power RF power tubes are directly heated; the heater voltage must be much smaller than the signal voltage on the grid and is therefore in the Text in other languages may differ.
The following letter indicates the photocathode type:. Marconi-Osram K inkless T etrode beam power tubes. This usually implies construction differences, not just selection from regular quality production. Retrieved 8 March