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6F4P
64

General

Ttriode-Pentode
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

2nd 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

72070

Anode current, mA

31.1

184

Reverse grid (1st grid) current, mkA

no more than 0.3

no more than 1

Dissipate cathode-heater current, mkA

no more than 20

no more than 20

Dissipate (1st) grid-other electrodes current, mkA

no more than 5

no more than 5

Dissipate plate-other electrodes current, mkA

no more than 10

no more than 10

Mutual conductance, mA/V

41

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

2nd grid voltage, V

250

Anode dissipation, W

1

4

2nd 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 40C, %

98

Plate-grid and plate curves

 Plate curves of triode               Plate-grid curves of triode                    Plate curves of pentode