TUBEOFILE
EL3G — Power Pentode, Octal | Tubeofile
← Browse Philips Australia Medium quality — at least 60% of universal parameters and pins are present, but some key data is missing. Verify specific values against datasheets before critical use.
Known Equivalents & Substitutes
No known equivalents. If you know of any, use the ⚑ Report Issue button above.
Similar Tubes (Not Drop-In Compatible)
Electrically identical but Y8A steel base — different base Electrically identical but P8A side-contact base — different base, not pin-compatible Electrically identical (0.9 A heater) but P8A base — different base Electrical Specifications
Absolute Maximum
Anode Voltage (max) Anode Voltage (max) 250V
Screen Voltage (max) Screen Voltage (max) 275V
Anode Dissipation (max) Anode Dissipation (max) 9W
Typical Operating
Anode Voltage (typical) Anode Voltage 250V
Notes
The 'G' suffix indicates glass envelope with Octal (K8A/IO) base — a different base from the standard P8A side-contact EL3/EL3N. Same pinout as the EL3N in terms of electrode connections, but mapped to Octal pins. Heater current 0.9 A — same as the EL3N, not the original 1.2 A EL3. Anode connection via top cap. Cathode-bias only — fixed bias is prohibited. Very rare Australian variant — manufactured for equipment using Octal sockets. Pin Layout — Octal
1 2 3 4 5 6 7 8
1 No Connection
2 Heater
3 Screen Grid
4
Socket-Compatible Tubes ⚠ Not electrically compatible
Screen Voltage (typical) Screen Voltage
250V
Grid 1 Bias Voltage Grid 1 Bias Voltage -6V
Anode Current Anode Current 36mA
Anode Resistance Internal Plate Resistance 50,000Ω
Transconductance Transconductance 9mA/V
Output
Output Power Output Power (Class A SE) 4.5W
Heater
Heater Voltage Heater Voltage 6.3V
Heater Current Heater Current 0.9A
Absolute Maximum
Anode Voltage (max) Anode Voltage (max) 250V
Screen Voltage (max) Screen Voltage (max) 275V
Anode Dissipation (max) Anode Dissipation (max) 9W
Typical Operating
Anode Voltage (typical) Anode Voltage (typical) 250V
Screen Voltage (typical) Screen Voltage (typical) 250V
Grid 1 Bias Voltage Grid 1 Bias Voltage -6V
Anode Current Anode Current 36mA
Transconductance Transconductance
Output
Output Power Output Power (Class A SE) 4.5W
Control Grid
6 Suppressor Grid (internally connected to cathode)
TC Top Cap — Anode (top cap)
9mA/V