|
|
|
|
|
 |
 |
RUSSIAN NUMBERING SYSTEM 
| The regulation GOST 5461-59 applies to tubes manufactured from 1959 and semiconductors manufactured from 1959 to 1963. Every symbol consists of four elements. If an element is absent, a dash should be written at its place. |
| Note: There are exceptions. Not all Russian tubes are numbered according this system. |
| First element | |
|---|---|
 
| Generator (transmitting) tubes up to 25 MHz |
| UKF generator (transmitting) tubes 25-600 MHz |
| Centimeter range generation (transmitting) tubes |
| Modulator tubes |
| High power rectifiers |
|
| Voltage stabilizers |
| Current stabilizers |
|
| Thyratrons |
|
| Gas-discharge rectifiers |
| Mercury gas-discharge rectifiers |
 , 
| Photocells and photomultipliers |
| Approximate (usually full volts) heater voltage | Receiving tubes |
| Screen diameter in cm | Picture tubes |
| Semiconductor diodes |
| Transistors |
| Second element | |
|---|---|
|
| Diodes |
| Double diodes |
|
| Triodes |
|
| Tetrodes |
|
| Power pentodes and tetrodes |
|
| Remote cut-off pentodes |
| Sharp cut-off pentodes |
|
| Secondary emission pentodes |
| Mixing tubes with two signal grids |
| Pentodes with one or two diodes |
|
| Triodes with one or more diodes |
| Tuning indicators |
| Triodes with hexode, heptode or octode |
| Double triodes |
|
| Double tetrodes and pentodes |
|
| Triode - pentodes |
| Rectifiers |
| Type sequence number | Gas-discharge tubes, power rectifiers |
|
| Gas thyratrons |
|
| Mercury thyratrons |
|
| Cold cathode thyratrons |
 
| Oscillograph tubes with electrostatic deflection |
|
| Oscillograph tubes with electromagnetic deflection |
|
| TV picture tubes |
| Type sequence number | Semiconductors |
| Third element | |
|---|---|
| Receiving, picture,
generator and modulator tubes voltage and current stabilizers photocells and photomultipliers cold cathode thyratrons | Type sequence number |
| Semiconductors | Subtype, group (letter) |
| Fourth element | ||
|---|---|---|
| none | Metal | Receiving tubes; voltage and current stabilizers |
|
| Glass | |
|
| HF glass, side leads | |
|
| Ceramic | |
|
| Miniature glass 19 and 22.5 mm | |
|
| Subminiature > 10 mm | |
|
| Subminiature 10mm | |
|
| Subminiature 4 mm | |
|
| Subminiature 6 mm | |
|
| lock-in-key | |
|
| Disc leads | |
|
| Water cooled | Generator (transmitting) and modulator tubes |
|
| Air cooled | |
| letter | Luminophor color code | Picture tubes |
| X/Y | X = average current in A Y = reverse voltage amplitude in kV | Thyratrons (non cold cathode), Gas-discharge, power rectifiers |
| After symbol dash and postfix of one or more letters may be added: | |
|
| high reliability tube (military) |
|
| long life tube (military) |
|
| designed for impulse operation |
|
| vibration resistant |
| Current Regulators | |
| [A][V1-V2]
| [A] is the current (in amperes) and [V1-V2] is voltage range |
The USA Tubes
and their Soviet analogues from NEXT-TUBE site  |
|
|
|
|
|