4-400风冷三*管

ELE*RON TUBE 4-400C/G

Detailed Product Description

Power-amplifier tube4-400C/G is intended for using as an amplifier, oscillator, or modulator. The low grid-plate capacitance of this tetrode coupled with its low driving power requirement allows considerable simplification of the *ociated circuit and driver stage.

The 4-400C/G is cooled by radiation from the plate and by circulation of forced-air through the base, around the envelope, and over the plate seal. Cooling can be greatly simplified by using an EIMAC SK-410 Air-system socket, and its accompanying gl* chimney.

The 4-400C/G is especially recommended for applications where long life and consistent performance are of prime consideration.

CHARA*ERISTICS

Plate dissipation (max.).................................................................................................400 watts

Screen dissipation (max.).................................................................................................35watts

Grid dissipation (max.)....................................................................................................10watts

Frequency for max. ratings (cw)....................................................................................110MHZ

Cooling.........................................................................................................radiation&forced air

Filament ..........................................................................................................thoriated tungsten

Voltage ...................................................................................................5.0 volts

Current....................................................................................................14.7 amperes

Capacitances(gnd.cath.connection)

Input……………………………………………………………………..................12.5 pF

Output……………………………………………………………….......................4.7 pF

Feed-through…………………………………………………………….........................0.12 Pf

Amplification factor (g1-g2)………………………………………………...........................5.1

Transconductance…………………………………………………............................4000umhos

Base…………………………………………………………………........................5-pin special

Recommended air-system socket……………………………………………..…..……..sk-410

Recommended air chimney………………………………………………………….…..sk-406

Recommended heat dissipating connector …………………………………………..…..HR-6

Maximum plate seal temperature ……………………………………..............................225°C

Maximum base seal temperature…………………………………………….…..............200°C

Maximum length………………………………………………….................6.38 in;162.00mm

Maximum diameter…………………………………………………..............3.56 in; 90.40mm

Weight (approximate)………………………………………………..…..............9.0 oz; 255gm

Operating position..................…………………………………………………………….…any