Russia Tube Name @

First element
„C„KGenerator (transmitting) tubes up to 25 MHz
„C„TUKF generator (transmitting) tubes 25-600 MHz
„C„RCentimeter range generation (transmitting) tubes
„C„MModulator tubes
„BHigh power rectifiers
„R„CVoltage stabilizers
„R„SCurrent stabilizers
„SThyratrons
„C„CGas-discharge rectifiers
„C„QMercury gas-discharge rectifiers
„UA„U„^„TPhotocells and photomultipliers
heater voltage Receiving tubes
Screen diameter in cm Picture tubes
„DSemiconductor diodes
„PTransistors
Second@element
„DDiodes
„VDouble diodes
„RTriodes
„^Tetrodes
„PPower pentodes and tetrodes
„KRemote cut-off pentodes
„GSharp cut-off pentodes
„BSecondary emission pentodes
„@Mixing tubes with two signal grids
„APentodes with one or two diodes
„CTriodes with one or more diodes
„ETuning indicators
„ITriodes with hexode, heptode or octode
„NDouble triodes
„QDouble tetrodes and pentodes
„UTriode - pentodes
„WRectifiers
Type sequence number Gas-discharge tubes, power rectifiers
„CGas thyratrons
„QMercury thyratrons
„VCold cathode thyratrons
„L„OOscillograph tubes with electrostatic deflection
„L„MOscillograph tubes with electromagnetic deflection
„L„KTV picture tubes
Type sequence number Semiconductors
Third@element
Type sequence number
Fourth@element
noneMetal
„RGlass
„GHF glass, side leads
„KCeramic
„PMiniature glass 19 and 22.5 mm
„CSubminiature > 10 mm
„ASubminiature 10mm
„QSubminiature 4 mm
„@Subminiature 6 mm
„Llock-in-key
„DDisc leads
„@Water cooled
„AAir cooled
letterLuminophor color code
X/YX = average current in A
Y = reverse voltage amplitude in kV
After symbol dash and postfix
„Bhigh reliability tube (military)
„Elong life tube (military)
„Idesigned for impulse operation
„Kvibration resistant