The OG-3 is a single-pulse dekatron with 40 cathodes and an unusual extra output cathode. 20kHz counting speed, helium-hydrogen fill, metal base. Light color - PURPLE. OG-3 dekatron is similar to GC10D and has 40 glow pins.

Counting direction: bidirectional;

Operation: single pulse;

Sort: counting tube;

Base: K8A;

Socket: K8A;

Zero position: Pin 1;

Counting steps: 10;

Number of guides: 3;

Gas filling: Argon;

Tube diameter max., mm: 33;

Tube height max., mm: 76;

Max. counting speed, kHz: 20;

Supply volt. min., V: 420;

Supply volt. typ., V: 450;

Maintaining voltage min., V: 170;

Maintaining voltage typ., V: 190;

Maintaining voltage max., V: 210;

Anode/cath. current min., uA: 600;

Anode/cath. current typ., uA: 700;

Anode/cath. current max., uA: 800;

Power supply power min., mW: 315;

Guide bias volt. min., V: 40;

Guide bias typ pulse op., V: 40;

Guide bias volt. max., V: 50;

Guide signal voltage pulse, Vp: 110-140 (125);

Guide signal pulse duration min, uS: 17-22;

Reset pulse duration min., uS: 2-5.