General
TtriodePentode
Triode used as an low frequency preamplifier in automatic gain control circuit of receivers and TV.
Pentode used in output stages of videoamplifier.
Envelope: miniature glass.
Mass 20 g.
Lead diagram
General characteristics:
Filament voltage, Volt 
6.3 
Anode voltage of triode, Volt 
200 
Anode voltage of pentode, Volt 
200 
2^{nd} grid voltage of pentode, Volt 
200 
Resistance in cathode circuit of triode, Ω 
570 
Resistance in cathode circuit of pentode, Ω 
140 
Part 
Triode 
Pentode 
Filament (heater) current, mA 
720±70  
Anode current, mA 
3±1.1 
18±4 
Reverse grid (1^{st} grid) current, mkA 
no more than 0.3 
no more than 1 
Dissipate cathodeheater current, mkA 
no more than 20 
no more than 20 
Dissipate (1^{st}) gridother electrodes current, mkA 
no more than 5 
no more than 5 
Dissipate plateother electrodes current, mkA 
no more than 10 
no more than 10 
Mutual conductance, mA/V 
4±1 
8 to 13.5 
Gain coefficient (MU) 
65 

Internal resistance, kΩ 
130 

Inter electrode capacitance, pF: 


input 
3.8 
8.7 
output 
0.6 
4.2 
transfer 
2.7 
0.1 
Limited operating values:
Part 
Triode 
Pentode 
Filament voltage, V 
5.7 to 6.9  
Cathode – heater voltage, V 
150 to 200  
Anode voltage, V 
250 
250 
Cathode current, mA 
12 
40 
2^{nd} grid voltage, V 

250 
Anode dissipation, W 
1 
4 
2^{nd} grid dissipation, W 

1.7 
Resistance in grid circuit, MΩ 
1 
1 
Operating environmental conditions :
Acceleration of vibration loads, g 
2.5 
at the frequencies, Hz 
50 
Acceleration of multiple impacts, g 
12 
Ambient temperature, °? 
–60 to +70 
Relative humidity at up to 40°C, % 
98 
Plategrid and plate curves