Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 2449
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Developer: Philips; Eindhoven (tubes international!); Miniwatt 
Tube type:  Space Charge Tetrode 
Identical to A341
First year 1925 Tube leaflet collection E.Erb Analysis by original leaflets

Base Europe 4-Pin B4 + side contact
Filament Direct / Battery =

Waagrechtes System. Beschriftung am Glaskolben: 2,7 - 3,3V (Heizung?) 2 - 20V (Anodenspannung?). Seitenanschluss vom Metallsockel nicht isoliert. Durch den Quetschfuß sind 5 Drähte ausgeführt.

Heizung 2,7 - 3,3V/0,08A; Sättigungsstr. 10mA; Ruhestrom 3mA; Anodenspannung 2 - 20V; Verstärkungsfaktor 4,5; Durchgriff 22%; Steilheit 1mA/V; Innerer Widerstand 4500Ω; Anwendung: H.A.N.L.; Preis 1927: 15ATS. Daten aus dem WEKA-Katalog 1927, Seite 163.

Dimensions (WHD)
incl. pins / tip
47 x 100 x mm / 1.85 x 3.94 x inch
Tube prices 1 Tube prices (visible for members only)
Information source Radios von gestern, 2. Auflage   Seite 227

a441npatice~~1.png A341: own
Bohuslav Svarc

Just Qvigstad
A341: own collection
Peter den Boer

More ...
Usage in Models 1= 1925

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):1

Collection of



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]