GM2A
TRIODE
The GM2A triode is used in electronic current and voltage regulators in RF equipment
GENERAL
Cathode: directly heated, carbonized thoriated tungsten.
Envelope: glasstometal.
Anode cooling: forced liquid.
Height: at most 200 mm.
Mass: at most 1.25 kg
OPERATING ENVIRONMENTAL CONDITIONS  
Vibration loads:  
frequencies, Hz  20150 
acceleration, m/s²  25 
Multiple impacts with acceleration, m/s²  98 
Linear loads with acceleration, m/s²  98 
Ambient temperature, °C  50 to +70 
Relative humidity at up to +25 °C, %  98 
BASIC DATA Electrical Parameters 

Filament voltage, V  6.3 
Filament current, A  2834 
Mutual conductance (at anode voltage 4 kV, anode currents 0.7 and 0.5 A), mA/V  1418 
Gain coefficient (at anode voltages 4 and 5 kV, anode current 0.7 A)  4862 
Interelectrode capacitance, pF:  
input, at most  25 
output, at most  1 
transfer,at most  16 
Mutual conductance over 500 h of service, mA/V, at least  13 
Limit Operating Values  
Filament voltage, V  5.76.9 
Anode voltage, kV:  
at anode dissipation 3.5 kW  6.5 
at anode dissipation 1 kW  8 
Grid voltage, V  500 
Filament starting current, A  50 
Dissipation, W:  
anode  3.5x10³ 
grid  50 
Warm up time, s, at least  30 
Temperature, °C:  
envelope and seals  150 
leads of grid and cathode  180 
Averaged Anode Characteristic Curves:
U_{f} = 6.3V;
—— • —— P_{a max}
Averaged Characteristic Curves:
U_{f} = 6.3V;
_____ anodegrid;
_ _ _ grid