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1625 Pinout
basing pinout

 
1625 Substitutes
Close or identical CV659, VT136

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.

 
1625 Ratings
Vh
V		 Ih
A		 VaMax
V		 Vg2Max
V		 PaMax
W		 Pg2Max
W		 Cgk
pF		 Cak
pF		 Cga
pF
12.6 0.45 750 300 30 3.5 12 7 0.2

 
1625 Application Data
Class Va
V		 Vg2
V		 Vg1
V		 Ia
mA		 Ig2
mA		 Pout
W		 Notes
RF, C (CW) 750 250 -45 100 6 50
RF, C (AM) 600 275 -90 100 6.5 42.5
RF, AB1 750 300 -35 15-70 3-8 72
RF, B 750 0 15-240 120 Input on g2, g1 connected to g2 via 20k ohms

 
1625 Data sheet links
The Valve Museum 1625: html
Frank Philipse (Wildcat mirror - Jörg Jan Münter) 1625: 1625.pdf (39931 bytes), 1625.pdf (55028 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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