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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Archived from the original PDF on 4 March Vacuum tubes which had special qualities French: Retrieved 21 December It was phased vatasheet after when Valvo adopted the Mullard—Philips scheme.

Collection of Tomasz Szczesniak PL. Media related to Tungsram vacuum tubes at Wikimedia Commons. For examples see below. Special quality variants may have the datassheet “SQ” appended, or the device description letters may be swapped with the numerals e.

These tubes were made for home storage battery receivers manufactured during the early to mids.

ECC85 Datasheet PDF – Philips

These tubes had metal dztasheet sprayed onto the glass envelope, copying a design common to European tubes of the time. From Wikipedia, the free encyclopedia.

Retrieved 31 January Collection of Ulrich Fieseler D. Media related to Tesla vacuum tubes at Wikimedia Commons. Only a few types are still used today, mainly in high-power, high-frequency applications.

Structure and usage [31]. Media related to Lamina vacuum tubes at Wikimedia Commons. Receiving Tube Manual RC30p. One system prefixes a three-digit number with the letters “VT”, presumably meaning “Vacuum Tube”.

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(PDF) ECC85 Datasheet download

Collection of Christian Schaufelberger CH. The first element is datzsheet number specifying filament voltage. Used in s home radios powered by dry cells filaments and storage batteries B-plus voltage.

All of them incorporate at least one rectifier diode. Use was not rigorously systematic: The oldest numbering systems date back to the early s, such as a two-digit numbering system, starting with the UVAwhich was considered as “type 01”, and extended almost continuously up into the s. Heater current [23] [1]. Philips sold a family of mA series heater tubes under this letter in South America: Later types incorporated an extra pin in the base so that the shield could be connected directly to the chassis.

Retrieved 19 November Raytheon Company components division, industrial components operation.

Retrieved 19 August Collection of Reinhard Riek D. Antique radios, Old Time Radios. The following letter indicates the photocathode type:. This system is very descriptive of what type of device triode, diode, pentode etc. Collection of Howard Craven GB. Archived from the original PDF on 29 December The E91H is a special heptode with a passivated third grid designed to reduce secondary emission; this device was used as a “gate”, allowing or blocking pulses applied to the first, control grid by changing the voltage on the third grid, in early computer circuits similar in function to the U.

Retrieved 17 April The Tungsram system was composed of a maximum of three letters and three or four digits. Most of these are special quality versions of the equivalents given. Media related to Valvo vacuum tubes at Wikimedia Commons. A letter may be attached to designate water cooling no letter designates a radiation cooled device.

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Retrieved 17 October For phototubes and photomultipliers, the second element is a sequential number and then a letter code identifying vacuum or gas fill and the type of cathode.

Retrieved 29 August Retrieved 12 February Rundfunk- und Fernmelde-Technik desv was the brand of a group of telecommunications manufacturers in the German Democratic Republic. All have glass bodies that measure from 0.

Receiving tubes have heaters or filaments intended for direct battery operation, parallel operation off a dedicated winding on a supply transformer, or series string operation on transformer-less sets. Some manufacterers preceded the EIA number with a manufacterer’s code, as explained above.

ECC85 Datasheet PDF ( Pinout ) – Double Triode Intended

This was phased out after when Mullard adopted the Mullard—Philips scheme. Literature “Telefunken Laborbuch Band 1 Taschenbuch hellblau “. Collection of Roland Biesler D. Grigsby-Grunow did not shield rectifier tubes except for type 6Y5 listed below or power output tubes. Datasheer 10 September You even can look up radio models with a certain tube line up.