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PDF 3CX800A7 Data sheet ( Hoja de datos )

Número de pieza 3CX800A7
Descripción High Mu Power Triode
Fabricantes PL 
Logotipo PL Logotipo



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3CX800A7
Hi - Mu
Power Triode
The 3CX800A7 is a compact power triode intended for use as a cathode-driven Class AB2 or
Class B amplifier in rf applications including the VHF band. As a linear amplifier, high power gain
may be obtained without sacrifice or low intermodulation distortion characteristics. Low grid
www.DataSheeitn4Ute.crocmeption and high amplification factor combine to make the 3CX800A7 drive power low for a
tube of this power capacity. A single 3CX800A7 will deliver 750 watts PEP and 750 watts key-
down CW output power to 350 MHz. The 3CX800A7 is useful to 600 MHz. The anode is forced-
air cooled for 800 watts of dissipation.
General Characteristics
Electrical
Cathode: Oxide Coated, Unipotential
Heater Voltage........................................................................................ 13.5 +/- 0.6
Heater Current, at 13.5 volts .................................................................... 1.5
Cathode-Heater Potential (maximum) ..................................................... +/- 150
Minimum Warm-up Time (before application of rf drive and high voltage) . 3
Amplification Factor (approximate) .............................................................. 200
Direct Interelectrode Capacitance (grid grounded)
Cin ......................................................................................................... 26.0
Cout ....................................................................................................... 6.1
Cpk ........................................................................................................ 0.05
Highest Frequency for Maximum Ratings...................................................... 350
V
A
V
Min.
pF
pF
pF
MHz
Mechanical
Maximum Overall Dimensions
Length .................................................................................................... 2.52 in; 64.01mm
Diameter ................................................................................................ 2.53 in; 64.26 mm
Net Weight .............................................................................................. 11.5 oz. 326 gm
Operating Position .................................................................................. Any
(Revised 10/13/97)
PENTA LABORATORIES
9740 COZYCORFT AVENUE * CHATSWORTH * CALIFORNIA 91311
(800) 421-4219 * (818) 882-3872 * FAX: (818) 882-3968
ELECTRON TUBES FOR INDUSTRY

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3CX800A7 pdf
Fault Protection - All power tubes at voltages which can cause severe damage in the event of an
arc, especially in cases where large amounts of power supply stored energy are involved. Some
means of protection is advised in all cases, and it is recommended that a series resistor be used
in the lead from the power supply to the anode circuit to limit peak current and help dissipate the
energy in the event of a tube or circuit arc. A resistance of 50 ohms, with at least a 25W rating, in
the positive plate power supply lead will help protect the tube in the event of an arc.
VHF Operation - The base pin connection to the grid may be used at frequencies to 30 MHz.
Above 30 MHz the available contact collects or grid bypass capacitor assembly are recom-
www.DataSheemht4iUge.hcnoedmrecdi.rcVuHit Flodssrievsin.g power will be greater than the typical values shown on page 2 because of
Radio-Frequency Radiation - Exposure to strong rf fields should be avoided, especially at fre-
quencies above 300 MHz, where energy absorption by the human body is significant. The human
eye is particularly sensitive. Prolonged exposure to rf radiation should be limited to 10 milliwatts
per square centimeter. It is generally accepted that exposure to "high levels" of rf radiation can
result in severe injury, including blindness.
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