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6CG6 — Small Signal Pentode, B7G | Tubeofile
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6CG6
Small Signal Pentode — B7G
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Known Equivalents & Substitutes
6BD6
Similar Tubes (Not Drop-In Compatible)
26CG6
Same tube structure but 26.5V heater for series-string operation — not interchangeable
6BA6
Similar small-signal pentode on B7G base — different operating points
Electrical Specifications
Absolute Maximum
Anode Voltage (max)
Anode Voltage (max)
300
V
Screen Voltage (max)
Screen Voltage (max)
150
V
Anode Dissipation (max)
Anode Dissipation (max)
4
W
Typical Operating
Anode Voltage (typical)
Anode Voltage (typical)
250
V
Screen Voltage (typical)
Screen Voltage (typical)
150
V
Grid 1 Bias Voltage
Grid Voltage
-8
V
Anode Current
Anode Current
9
mA
Screen Current
Screen Current
Heater
Heater Voltage
Heater Voltage
6.3
V
Heater Current
Heater Current
0.3
A
Notes
The 6CG6 is a general-purpose sharp-cutoff pentode. The 26CG6 is the 26.5V heater variant for series-string TV receivers.
Substitution guides list 6BD6 as an equivalent and 6BA6 as a close substitute.
Limited independent datasheet availability.
Pin Layout — B7G
1
2
3
4
5
6
7
1
Control Grid (g1)
2
Cathode
,
Suppressor Grid (g3)
3
Heater
4
Socket-Compatible Tubes
⚠ Not electrically compatible
6AG5
EF95
References
https://tdsl.duncanamps.com/show.php?des=6CG6
2.3
mA
Anode Resistance
Anode Resistance
720,000
Ω
Transconductance
Transconductance
2
mA/V
Heater
5
Plate
6
Screen Grid (g2)
7
Cathode
,
Internal Shield