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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Computers and telecommunication equipment also required tubes of greater quality and reliability than for domestic and consumer equipment. Retrieved 31 January The numbers of the following tubes all start with 1, but datasheeet tubes all have 2. Wikimedia Commons has media related to Vacuum tubes and Gas discharge tube.

Receiving Tube Manual RC26p. For examples see below. Literature “Telefunken Laborbuch Band 1 Taschenbuch hellblau “.

ECC85 Datasheet PDF

This was phased out after when Mullard adopted the Mullard—Philips scheme. Heater current [23] [1]. Quantity of Models at Radiomuseum. You will find thousands of tubes or valves with interesting links. The third element is a sequentially assigned number that distinguishes between different devices of the same type.


Retrieved 5 October Retrieved 25 December Filaments powered by 1. Media related to Tesla gas discharge tubes at Wikimedia Commons.

Used datashwet s home radios. You reach this tube or valve page from a search after clicking the “tubes” tab or by clicking a tube on a radio model page. Collection of Egon Strampe D.

Thermionic Valves (tubes)

Fortschritte der Funktechnik in German. Raytheon Company components division, industrial components operation.

If two devices share the same type designation other than the first letter e. Collection of Karlheinz Fischer D. Collection of Ulrich Fieseler D.

ECC85 Datasheet – Double Triode –

The numbers following these prefixes can be “special” four-digit numbers, or domestic two- or three-digit numbers or simply the domestic North American “RETMA” numbering system. It consisted of one or two letters designating system type andoptionally, type of cathodea hyphen, then a sequentially assigned number with up to 3 digits.

Then dtasheet hyphen “-“followed by a sequentially assigned number or the designation of the American original. Note that elevating the cathode voltage above datwsheet 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.


Media related to Soviet gas discharge tubes at Wikimedia Commons. The fourth element denotes the type of envelope. By using this site, you agree to the Terms of Use and Privacy Policy. Collection of Ottmar Rollmann D. The letters “CC” indicated the two triodes and the “F”, the single pentode inside these types.

Machlett LaboratoriesInc. Many of these types had gold-plated base pins and special heater configurations inside the nickel cathode tube designed to reduce hum pickup from the A. Collection of Ralf Meinke D.