6F5P
General
TtriodePentode
Triode used as an low frequency amplifier and oscillator.
Pentode used in output unit of frame scan of TV (with 110^{O} beam deflection).
Envelope: miniature glass.
Mass 20 g.
Lead diagram
General characteristics:
Filament voltage, Volt 
6.3 
Anode voltage of triode, Volt 
100 
Anode voltage of pentode, Volt 
185 
2^{nd} grid voltage of pentode, Volt 
185 
Resistance in cathode circuit of tetrode, Ω 
160 
Resistance in cathode circuit of pentode, Ω 
340 
Part 
Triode 
Pentode 
Filament (heater) current, mA 
925±65  
Anode current, mA 
5.2±1.8 
41±9 
Reverse grid (1^{st} grid) current, mkA 

no more than 1 
2^{nd} grid current, mA 

2.7 
Mutual conductance, mA/V 
7 
7.5 
Gain coefficient (MU) 
70±20 

Inter electrode capacitance, pF: 


input 
3.5 
11.7 
output 
0.25 
8.8 
transfer 
1.8 
0.7 
Operation time, hour 

more than 3000 
Limited operating values:
Part 
Triode 
Pentode 
Filament voltage, V 
5.7 to 7  
Cathode – heater voltage, V 
100  
Bulb temperature, ^{O}C 
220  
Anode voltage, V 
250 
300 
Pulse anode voltage, V 

2000 
2^{nd} grid voltage, V 

250 
Cathode current, mA 
15 
75 
Pulse cathode current, mA 
200 

Anode dissipation, W 
0.5 
9 
2^{nd} grid dissipation, W 

2 
Resistance in grid circuit, MΩ 
1 – fixed bias 3.3  selfbias 
1 – fixed bias 2.2  selfbias 
Operating environmental conditions :
Part 
Triode 
Pentode 
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 

Plate and plategrid curves
Plate curves of triode Plate curves of pentode
Plategrid curves of triode Plategrid curves of pentode