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EC91 Pinout
basing pinout

 

EC91 Substitutes
Close or identical CV417, CV419

Warning: Substitutes are given as a guide only - please refer to original manufacturers data sheets to ensure that a substitute is safe and appropriate for your application.

 

EC91 Ratings

No information available

EC91 Application Data

No information available

EC91 Data sheet links
The Valve Museum EC91: html
oldradio.qrz.ru EC91: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) EC91: EC91.pdf (132077 bytes), EC91.pdf (139827 bytes), EC91.pdf (29826 bytes)

Bold designators are close or identical, Italic designators are different ratings, different pinouts or different filament voltages. Please see the substitutes at the top of the page for more details

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