Electrically identical but P8A side-contact base — not Octal
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
Screen Dissipation (max)Screen Dissipation (max, at max output)2.5W
Cathode Current (max)Cathode Current (max)
Notes
Electrically identical to the EL3N (P8A side-contact base) and EL3 (P-base). For push-pull operating data, the Philips datasheet refers to the EL3 datasheet.
Screen dissipation has two limits: max 1.2 W at zero signal (idle) and max 2.5 W at maximum output power.
Heater-to-cathode voltage max 50 V (DC or RMS AC), with max cathode resistor of 5 kΩ.
Pin 3 connects cathode and suppressor grid internally.
Class AB push-pull (2x EL11): Va = 250 V, Vg2 = 250 V, Rk = 140 Ω, Raa = 10 kΩ delivers 8.2 W at 3.1% distortion.
μg2g1 = 25 suggests approximate triode μ ≈ 25 when triode-strapped, but no manufacturer triode-connected data is published.
Pin Layout — Y8A
1Screen Grid
2Control Grid
3Cathode + Suppressor Grid (internally connected)
4
Socket-Compatible Tubes ⚠ Not electrically compatible