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2A3 Pinout
basing pinout


2A3 Substitutes
Close or identical 5930, CV1831, VT95

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.


2A3 Ratings
Vh Ih
2.5 2.5


2A3 Application Data
Class Va Vg1 Ia Ra S Rk Zout Pout THD
A S/E 250 -45.0 60.0 800 5.2 750 2,500 3.5 5


2A3 Data sheet links
Dave Cigna''s Pages (DuncanAmps mirror) 2A3: html
oldradio.qrz.ru 2A3: Brans Vademecum, MK buizen handboek
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 2A3: 1U5.pdf (41369 bytes), 2A3.pdf (141927 bytes), 2A3.pdf (170123 bytes), 2A3.pdf (19050 bytes) (fr), 2A3.pdf (197658 bytes)  5930: 5930.pdf (62098 bytes)
Triode Electronics 2A3: gif1, gif2, gif3, gif4
TubeZone 2A3: pdf

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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