807 (vacuum tube)

807
807
	Three 807s and an early 6L6, ; Left, British Emitron brand 807; Second Left, Canadian Westinghouse brand 807; Second Right, Dutch Philips brand military 807/ATS25; Right, U.S. Mullard-B.V.A branded 6L6G
Classification	Beam-power tetrode
Service	Class-A amplifier, (single-ended); Class-AB amplifier, (push–pull); Class-C amplifier, (radio frequency)
Cathode
Cathode type	Indirectly heated
Heater voltage	6.3
Heater current	900 mA
Anode
Max dissipation Watts	25 W
Max voltage	600 V
Socket connections
	American 5 Pin, (UY); Pin 1, Heater; Pin 2, Screen grid, g2; Pin-3, Control grid, g1; Pin-4, Cathode-beam plates; Pin-5, Heater; Top cap, Anode/plate
Typical class-A amplifier operation
Anode voltage	300 V, (600 V)
Anode current	83 mA, (40-75 mA)
Screen voltage	250 V, (300 V)
Bias voltage	-12.5 V, (-29.5 V)
Anode resistance	24 kΩ
Typical class-C amplifier operation
Power output	24 W, (plate dissipation = 16.5 W max)
Anode voltage	475 V
Anode current	83 mA
Screen voltage	300 V (screen dissipation = 2.5 W max)
Bias voltage	-50 V
Typical class-AB amplifier operation ; (Values are for two tubes)
Anode voltage	400 V (AB1), 600 V (AB2)
Anode current	90-119 mA (AB1), 90-240 mA (AB2),(zero to max signal)
Screen voltage	300 V (AB1), 300 V (AB2)
Bias voltage	-45 V (AB1), -25--30 V (AB2)
References
	Philips Valve Data Book, Philips Electrical Industries, 69-73 Clarence Street, Sydney, Radio Valve Application Division, 1958; Radio Valve Data, Eighth Ed. Iliffe Books Ltd., London, 1966

The 807 is a beam tetrode vacuum tube, widely used in audio- and radio-frequency power amplifier applications.

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