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ID = 31638
Brand: Philips; Eindhoven (tubes international!); Miniwatt
Tube type:  Transmitting Triode, air cooled   Power/Output 
Identical to TB04/10
Similar Tubes
Normally replaceable-slightly different:

Base Europe 4-Pin (A, 4A, B4, since 1914)
Was used by Transmittertube (Radio)
Filament Vf 7.5 Volts / If 1.25 Ampere / Direct / Parallel, (AC/DC)

Pa <10W Va <400V. Designed for amateur radio transmitters as oscillator and/or modulator.
Apparently also available with a UX4 base under the same type number.

Heater voltage range 6 to 7.5 volts.

Dimensions (WHD)
incl. pins / tip
56 x 140 x mm / 2.20 x 5.51 x inch
Literature - - Manufacturers Literature   
TB04/10: Meine Sammlung
Rudolf Osterkamp

TB04/10: Philips Amateursenderröhren 20.02.1928
Georg Richter

TB04/10: Philips Amateursenderröhren 20.02.1928
Georg Richter

Usage in Models 2= 1927

Quantity of Models at with this tube (valve, valves, valvola, valvole, válvula, lampe):2

Forum contributions about this tube
Threads: 1 | Posts: 1
Hits: 1808     Replies: 0
TB04/10 (TB04/10)
Antonio Maida

Nelle caratteristiche è invertito il valore della tensione e corrente del filamento. In realtà la tensione può andare da 6 a 7,5 Volt e la corrente è di 1,25 Amper

End of forum contributions about this tube

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