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6CS6 — Hexode, B7G | Tubeofile
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6CS6
Hexode — B7G
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RCA
↗ Radiomuseum
Known Equivalents & Substitutes
EH90
Similar Tubes (Not Drop-In Compatible)
6BE6
Similar heptode on B7G base but designed as pentagrid converter
6BY6
Similar dual-control heptode on B7G base — same gated amplifier application, different operating points
Electrical Specifications
Absolute Maximum
Anode Voltage (max)
Max Plate Voltage
300
V
Screen Voltage (max)
Max Screen Voltage
100
V
Anode Dissipation (max)
Max Plate Dissipation
1
W
Typical Operating
Anode Voltage (typical)
Plate Voltage
100
V
Screen Voltage (typical)
Screen Voltage
30
V
Grid 1 Bias Voltage
Grid Voltage
-1
V
Anode Current
Plate Current
1
mA
Anode Resistance
Plate Resistance
Heater
Heater Voltage
Heater Voltage
6.3
V
Heater Current
Heater Current
0.3
A
Notes
GE Essential Characteristics: Dual-Control Heptode, B7G (7CH) base. Va=100V, Vg2=30V, Vg=-1V, Ia=1mA, gm=1100 umhos, Rp=1MΩ, Pa_max=1W, Va_max=300V, Vg2_max=100V.
Philips interchange confirms 6CS6=EH90.
Sams lists 6BY6 as substitute — similar function but higher Pa_max on the 6BY6.
Muiderkring Handbook page 158 lists this type.
Pin Layout — B7G
1
2
3
4
5
6
7
1
Signal Grid (g1)
2
Cathode
,
Suppressor Grid (g5)
3
Heater
4
Socket-Compatible Tubes
⚠ Not electrically compatible
6BC5
6BM5
6BY6
6CE5
PL95
References
https://frank.pocnet.net/sheets/049/6/6CS6.pdf
1,000,000
Ω
Transconductance
Transconductance
1.1
mA/V
Heater
5
Plate
6
Screen Grid (g2+g4)
7
Control Grid (g3)