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CV4015 — Small Signal Pentode, B7G | Tubeofile | Tubeofile
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CV4015
Small Signal Pentode — B7G — Mullard
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Data: High
High quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.
↗ TDSL
↗ Radiomuseum
Known Equivalents & Substitutes
6065
M8161
Similar Tubes (Not Drop-In Compatible)
EF85
Similar variable-mu RF pentode on B9A base — not pin-compatible
Electrical Specifications
Absolute Maximum
Anode Voltage (max)
Anode Voltage (max)
250
V
Screen Voltage (max)
Screen Voltage (max)
250
V
Anode Dissipation (max)
Anode Dissipation (max)
2.5
W
Screen Dissipation (max)
Screen Dissipation (max)
0.6
W
Typical Operating
Notes
CV4015 is the UK military (Common Valve) designation for the 6065/M8161.
Philips interchange confirms: 6065 = CV4015 = M8161.
Special quality grade with tighter parameter tolerances than commercial equivalents.
Variable-mu (remote cutoff) characteristic for AGC-controlled RF/IF stages.
See 6065 and M8161 datasheets for complete specifications.
Pin Layout — B7G
1
2
3
4
5
6
7
1
Control Grid (g1)
2
Cathode (and internal shield)
3
Heater
4
References
https://tdsl.duncanamps.com/show.php?des=CV4015
https://www.radiomuseum.org/tubes/?tube=CV4015
Anode Voltage (typical)
Anode Voltage
200
V
Screen Voltage (typical)
Screen Voltage
200
V
Grid 1 Bias Voltage
Grid Voltage
-2.5
V
Anode Current
Anode Current
8.25
mA
Screen Current
Screen Current
2.1
mA
Anode Resistance
Plate Resistance
900,000
Ω
Transconductance
Transconductance
2.45
mA/V
other
Grid 1 Cutoff Voltage (100:1 gm reduction)
Grid 1 Cutoff Voltage (100:1 gm reduction)
-27
V
Heater
Heater Voltage
Heater Voltage
6.3
V
Heater Current
Heater Current
0.2
A
Heater
5
Anode
6
Screen Grid (g2) and Suppressor Grid (g3
,
internal shield)
7
Screen Grid (g2)