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ID = 43257
Soviet Union
Brand: Common type USSR (SU) tube/semicond.
Tube type:  Vacuum Pentode 
Identical to 1Ж29Б-В

Base Wires Top contact with a cap.
Filament Vf 1.2 Volts / If 0.062 Ampere / Direct / Battery =

Long life tube.

Dimensions (WHD)
incl. pins / tip
9 x 40 x mm / 0.35 x 1.57 x inch
Weight 5 g / 0.18 oz
Tube prices 4 Tube prices (visible for members only)

ru_1j29b-v_base.png 1Ж29Б-В
Michael Watterson

1Ж29Б-В: My Personal Collection
Frank Fisher

More ...
Usage in Models 1= 1961 ; 1= 1984??

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

Collection of



Forum contributions about this tube
Threads: 1 | Posts: 2
Hits: 3091     Replies: 1
1j29b-v (1j29b-v)
Michael Watterson

Also known as 1ZH29b-v, 1sh29b-v and properly 1Ж29Б-В

There is also 1j29b (1Ж29Б) and 1j29-r (1Ж29Б-Р)

Useful information on these kinds of sub-miniature Rod Pentode tubes (valves):

Russian Subminiature Tubes

The 1j29b (all versions) is  still (2011) readily available to purchase as New Old Stock (NOS).

Nützliche Informationen über diese Art von Sub-Miniatur-Rod Pentode Röhren:

Russian Subminiature Tubes

Die 1j29b (alle Versionen) ist immer noch (2011) leicht zugänglich zu kaufen (2011) leicht zugänglich wie Neu Alte Aktien Kauf (NOS)

Michael Watterson

The cyrillic suffix -B (v in latin/english) indicates longer life / more durable

The cyrillic suffix (r in latin/english) indicates longest life / most durable / most reliable.

The 1j29b-v (aka 1sh29b-v and properly 1Ж29Б-В) seems physically identical to the normal 1j29b (1Ж29Б) .   The 1j29-r (1Ж29Б-Р) is a different pin / wiring connection.

End of forum contributions about this tube

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