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3Q4
Power - Pentode Single (NOT beam) (under 10W)PentodeDirectly heatedSeries-parallel
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Base
7BA
Socket code
B7G
Sections
1
Heater
2.8 V / 50 mA
Plate
90 V / 1 W
Screen
90 V
Ik max
12 mA
rP
100,000 Ω
gm
2.15 mA/V
7 pins - B7G - Miniature 7-contact
Variations:DL95
Directly heated output pentode, co-designated DL95, designed for low-frequency power amplification. Its filamentary construction suits battery-operated receiver audio-output stages.
Named For Audio Output Power Pentode Suitable For Battery Equipment
Source PDFs (9)
DL95
Power - Pentode Single (NOT beam) (under 10W)PentodeDirectly heatedSeries-parallel
PDF Google eBay
Base
Miniature
Socket code
B7G
Sections
1
Heater
1.4 V / 100 mA
Plate
150 V / 1.2 W
Screen
90 V / 0.45 W
Ik max
12 mA
rP
100,000 Ω
gm
2.15 mA/V
7 pins - B7G - Miniature 7-contact
Variations:3Q4
Directly heated output pentode designed for low-frequency power amplification. Its filamentary cathode and battery-oriented operating conditions suit portable receiver audio-output stages.
Named For Audio Output Power Pentode Suitable For Battery Equipment
Source PDFs (3)

Electrical Summary

General Summary

3Q4

Power - Pentode Single (NOT beam) (under 10W)PentodeDirectly heatedSeries-parallel

Heater	2.8 V / 50 mA
Plate	90 V / 1 W
Screen	90 V
Ik max	12 mA
rP	100,000 Ω
gm	2.15 mA/V

7 pins - B7G - Miniature 7-contact

Variations:DL95

Directly heated output pentode, co-designated DL95, designed for low-frequency power amplification. Its filamentary construction suits battery-operated receiver audio-output stages.

Named For Audio Output Power Pentode Suitable For Battery Equipment

DL95

Power - Pentode Single (NOT beam) (under 10W)PentodeDirectly heatedSeries-parallel

Heater	1.4 V / 100 mA
Plate	150 V / 1.2 W
Screen	90 V / 0.45 W
Ik max	12 mA
rP	100,000 Ω
gm	2.15 mA/V

7 pins - B7G - Miniature 7-contact

Variations:3Q4

Directly heated output pentode designed for low-frequency power amplification. Its filamentary cathode and battery-oriented operating conditions suit portable receiver audio-output stages.

Named For Audio Output Power Pentode Suitable For Battery Equipment

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