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01 Pinout
basing pinout

 

01 Substitutes
Close or identical 01A, 01AA, 01B, 101A, 201, 301A, 401A, AX, CV750, G01A, T01A, T10A, UX201A, VT30

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.

 

01 Ratings
Vh
V
Ih
A
VaMax
V
Cgk
pF
Cak
pF
Cga
pF
5 0.25 135 3.1 2.2 8.1

 

01 Application Data
Class Va
V
Vg1
V
Ia
mA
Ra
Ω
S
mA/V
Notes
A 90 -4.5 2.5 11,000 0.725
A 135 -9 3 10,000 0.8
Detector 90 -7.5 0.2 Biased to 0.2mA anode current
Detector 135 -13.5 0.2 Biased to 0.2mA anode current
Detector 45 Rg=0.25-5.0Mohm

 

01 Data sheet links
Duncan''s Amp Pages 201: Acrobat PDF
Peter Millett 01-A: Acrobat PDF 95K
The Valve Museum 01: html
oldradio.qrz.ru 01A: Brans Vademecum
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 01A: 00A.pdf (29376 bytes), 01A.pdf (105671 bytes), 01A.pdf (36576 bytes) (fr)

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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