POWER PENTODE
The Philips SQ (Special Quality) E80L / 6227 vacuum tube
has Gold Plated pins. These tubes are premium quality and
last for 10,000 hours or more!
They are a special quality output pentode designed for
use in industrial equipment where stability of
characteristics and long life are required.
The heater is suitable for AC or DC operation. The
maximum variation of heater current at 6.3 V is + or - 40
mA.
The anode dissipation is 8 Watts and the amplification
factor (ì) is 21.5. As a single ended class A amplifier
the E80L will deliver 2.7 Watts. For two valves
operating in class AB push-pull an output of 5.7 watts is
achievable with 3% total distortion.
The thin glass tube envelope is 19 mm in diameter and,
excluding the B9A base pins, is 69 mm tall.
The E80L is a very nice sounding tube.
Electrical Data:
Heater Voltage ............................... 6.3 V
Heater Current ............................... 0.7 A
Preferred Substitutes .................... 6227