Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 31602
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Diode-Triode   Audio Frequency 
  Late but no serial production. For instance only development samples. *****
Identical to DAC21_9pin
Similar Tubes
Other base:
Successor Tubes 1940   DAC21  

Base Loctal-9-Pin (B9G)
Was used by Radio/TV-reception etc.
Filament Vf 1.4 Volts / If 0.025 Ampere / Direct / Battery =

The Philips 21- "Key Base" tubes were initially designed in 1940 with the 9-pin base B9G like the EF50. The later series production from 1942 on however was changed to the 8-pin Locktal-base B8G designed by Sylvania. There also DAC21's with International octal bases.

Information source - - Manufacturers Literature   1940-1941
DAC21_9pin: original Philips documents
Jacob Roschy

DAC21_9pin: original Philips documents
Jacob Roschy

DAC21_9pin: own collection
Peter den Boer

from Just Qvigstad

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]