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ID = 1722
Brand: Valvo GmbH, Radioröhrenfabrik; Hamburg
Tube type:  Vacuum Pentode   Power/Output 
Identical to L496D = RES964 = E443H = PP4101 = RTP4 = P435
Similar Tubes
Other base:
First year 1933 Tube leaflet collection E.Erb Analysis by original leaflets
First Source (s)
Sep.1933 : Funkschau
Predecessor Tubes L427D  
Successor Tubes 1935   AL1  

Base Europe 5-Pin , B5 (Eu O, F, O5A) 1928 (Codex=Foo)
Was used by Radio/TV-reception etc.
Filament Vf 4 Volts / If 1.1 Ampere / Direct

L496D Valvo = E443H Philips. By model of the very similar USA-types PZ or 47 from 1931, with the E443H (= L496D)Philips now introduced output pentodes in Europe with equally 250 Volts screen and plate voltage, it also brought the 7k-ohms load-standard to Europe which remained until the end of the tube era. The former E443N required 400 Vp, but extra 200 Vg2 [J.R. 2003-01-19]

Text in other languages (may differ)
Tube prices 3 Tube prices (visible for members only)
Information source Babani, International Radio Tube Encyclopaedia   p. 116 & 117
Universal Vade-Mecum, Electron Valves and Semiconductor Devices   Section 207, p. 407
Taschenbuch zum Röhren-Codex 1948/49

Egon Strampe

4_22.png L496D: Telefunken Werkstattbuch
Wolfgang Bauer

Just Qvigstad
L496D: Valvo-Röhren-Daten 1934
Jacob Roschy

Usage in Models 2= 1933? ; 1= 1933 ; 3= 1934? ; 8= 1934 ; 1= 1935?? ; 3= 1935? ; 3= 1935 ; 1= 1936 ; 1= 1937? ; 1= 1938??

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):24

Collection of



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