Title imageTitle image

 Menu

 

 Information

7A4 Pinout
basing pinout

 

7A4 Substitutes
Close or identical CV1770, VT192

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.

 

7A4 Ratings

No information available

7A4 Application Data

No information available

7A4 Data sheet links
The Valve Museum 7A4: html
oldradio.qrz.ru 7A4: MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 7A4: 7A4.pdf (104146 bytes), 7A4.pdf (195950 bytes), 7A4.pdf (47551 bytes) (fr), 7A4.pdf (72898 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

All content on this page is copyright 1997-2026 Duncan Amplification Limited.

TDSL is advert free and is funded by voluntary donations. If you find the site useful, please consider making a small voluntary donation, thank you

Version: PHP release 1.16 22-Jan-2025