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Showing ECL84 and all of its variations. Other filters are hidden while viewing variations.

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6DX8
Voltage Pentode - Sharp Cutoff (single)Pentode-TriodeDissimilar
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Base
9HX
Socket code
B9A
Electrical Summary
Heater 6.3 V / 720 mA
Plate S1: 300 V / 1 WS2: 300 V / 4 W
Screen S2: 300 V / 1.7 W
Ik max S1: 12 mAS2: 40 mA
rP S1: 16,250 ΩS2: 130,000 Ω
gm S1: 4 mA/VS2: 10.4 mA/V
μ S1: 65S2: 65
Sections
2
9 pins - B9A - Small-button Noval 9-contact
Variations:ECL84
High-mu triode plus sharp-cutoff pentode designed for television sync/noise circuitry and video-output service.
Pentode Sharp Cutoff Video Amplifier Tube
Source PDFs (12)
ECL84
Voltage Triode Pentode Pentode-TriodeDissimilar
PDF Google eBay
Base
9HX
Socket code
B9A
Electrical Summary
Heater 6.3 V / 720 mA
Plate S1: 250 V / 1 WS2: 550 V / 4 W
Screen S2: 250 V / 1.7 W
Ik max S1: 15 mAS2: 40 mA
rP S1: 20,000 ΩS2: 18,000 Ω
gm S1: 4.5 mA/VS2: 10.4 mA/V
μ S1: 65S2: 36
Sections
2
9 pins - B9A - Small-button Noval 9-contact
Variations:6DX8
High-mu triode plus sharp-cutoff pentode for television sync/noise circuits and video-output service; pentode dissipation is about 4 watts.
Named For Audio Output Pentode Sharp Cutoff Triode Pentode TV Receiver Tube
Source PDFs (12)

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Electrical Summary

General Summary

Voltage Pentode - Sharp Cutoff (single)Pentode-TriodeDissimilar

Heater	6.3 V / 720 mA
Plate	S1: 300 V / 1 WS2: 300 V / 4 W
Screen	S2: 300 V / 1.7 W
Ik max	S1: 12 mAS2: 40 mA
rP	S1: 16,250 ΩS2: 130,000 Ω
gm	S1: 4 mA/VS2: 10.4 mA/V
μ	S1: 65S2: 65

9 pins - B9A - Small-button Noval 9-contact

Variations:ECL84

High-mu triode plus sharp-cutoff pentode designed for television sync/noise circuitry and video-output service.

Pentode Sharp Cutoff Video Amplifier Tube

Voltage Triode Pentode Pentode-TriodeDissimilar

Heater	6.3 V / 720 mA
Plate	S1: 250 V / 1 WS2: 550 V / 4 W
Screen	S2: 250 V / 1.7 W
Ik max	S1: 15 mAS2: 40 mA
rP	S1: 20,000 ΩS2: 18,000 Ω
gm	S1: 4.5 mA/VS2: 10.4 mA/V
μ	S1: 65S2: 36

9 pins - B9A - Small-button Noval 9-contact

Variations:6DX8

High-mu triode plus sharp-cutoff pentode for television sync/noise circuits and video-output service; pentode dissipation is about 4 watts.

Named For Audio Output Pentode Sharp Cutoff Triode Pentode TV Receiver Tube

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