EL34 Vacuum Audio Power Tube Specifications and Characteristics

AMPEREX TUBE TYPE 6CA7 / EL34

The 6CA7 is a power pentode designed especially for highfidelity audio systems. It has a plate dissipation of 25 watts and delivers highpower without drawing control-grid current.

The 6CA7 features high efficiency with extremely lowdistortion. Great care is taken in manufacturing so that there is very little spreadin characteristics of individual tubes. Thus, the rated output power can be obtainedwith all tubes. The tube also features high sensitivity which results in lowdistortion introduced by driver stages.

The tube features a large plate dissipation reserve. The high allowable grid leak resistance improves the performance of preceding stages.

GENERAL CHARACTERISTICS
ELECTRICAL
Cathode	coated unipotential
Heater Voltage	6.3 volts
Heater current	1.5 amps

Direct Interelectrode Capacitance's
Grid No. 1 to all other elements except plate	15.2 uuf
Plate to all other elements except grid No. 1	8.4 uuf
Plate to grid No. 1	max. 1.1 uuf
Grid No. 1 to heater	max 1.0 uuf
Heater to cathode	10 uuf

MECHANICAL
Base	JETEC #8ET, octal, 8 pin
Bulb	Tubular, 1 5/16" max. dia.
Max. overall length	4 7/16"
Max. seated height	3 7/8"
Max. diameter	1 1/2"
Mounting position	any

Vacuum Tube Data Sheets