8x New 1J29B 1Ж29Б Miniature HF Pentode Tubes With Flexible Leads NOS

Miniature HF pentodes with flexible leads

New soviet 1J29B miniature HF pentodes.

Eight tubes in one lot.

We ship via International Airmail.

Tracking number is provided.

High-frequency ultra-miniature pentode with short anode-grid characteristics.

Designed for generating and amplifying high-frequency voltages up to 60 MHz.

The 1Zh29B high-frequency pentode is used in general-purpose and special-purpose radio-electronic equipment.

Operates in any position.

Available in a miniature glass design.

Wire lead base with 8 leads.

Direct-heated oxide cathode.

Dimensions of the 1Zh29B pentode:

— tube height — 40 mm;

— tube diameter — 8.5 mm;

— anode lead length — 25 mm;

— lead length — not less than 40 mm;

— lead diameter — 0.4 mm.

Weight not more than 4.5 g.

Technical conditions: 3.300.004TU.

Decoding of the high-frequency pentode marking:

1Ж29Б

1 — number indicating the rounded value of the lamp filament voltage in volts;

Ж — letter defining the lamp type: Ж — high-frequency pentode with short characteristics;

29 — serial number of the development of this type of tube;

Б — letter characterising the design: Б — ultra-miniature, in a glass envelope, with a diameter of 8 to 10.5 mm;