2CVV4, 6CVV4, 13CVV4

Mechan i ca1:

Operating Position.				.	. Any
Maximum Over-all Length					0.8"
Maximum Seated Height					0.625 "
Maximum Diameter.					0.440"
Envelope.				Metal	Shell
Base . •		Medium Ceramic-Wafer Twelvar	5-Pin (JEDEC No.E5-65)
Maximum Ratings, Des1ln-Hax1mum Values:
PLATE	SUPPLY~VOLTAGE.		300· max.		volts
PLATE	VOLTAGE .		135	max.	volts
GRID VOLTAGE:			55
Negative-bias		value	55	max.	volts
Peak	positive	value	0	max.	volts
PLATE	DISSIPATION:
With a minimum series plate-circuit resistance
of	5000 ohms.		1.5	max.	watts
For lower values of series plate-circuit resistance				See Fig.l and
		Operating Considerations
CATHODE CURRENT			15	max.	ma
PEAK HEATER-CATHODE VOLTAGE:			100	max.
Heater negative with respect to cathode			100	max.	volts
Heater positive with respect to cathode			100	max.	volts
Typical Operation:
Plate	Voltage . .		70		volts
Grid Supply Voltage			o		volts
Grid Resistor . . .			47000		ohms
Amplification Factor.			68
Plate	Resistance	(Approx.).	5440		ohms
Transconductance.			12500		f-lJ!lhos
Plate	Current .		7.2		ma
Maximum Circuit		Values:
Grid-Circuit Resistance:·			0.5	max.
For fixed-bias operation.			0.5	max.	megohm
For cathode-bias operation.			2.2	max. megohms

•A plate supply voltage of 300 volts may be used provided sufficient plate-circuit re sistance and agc voltage are used to limit the voltage at the plate of the tube to 135 volts under conditions of maximum rated plate dissipation (1.5 watts).

•For operation at metal-shell temperatures up to 135 0 C.

OPERATING CONSIDERATIONS

The base ptns of the 2CW4, 6CW4, and 13CW4 fit the Cinch Manufacturing Co. socket No.133 65 10 001 and the Industrial Electronic Hardware Co. socket Nos.Nu 5044 and Nu 5060, or their equivalents.

In some previous publications reference has been made to a JEDEC No.E5-65 socket. This number is not a socket designation but is a base designation which defines the JEDEC Medium Ceramic-Wafer Twelvar 5-pin base used in nuvistor tubes.

Use of Plate-Dissipation Rating Chart

The Plate-Dissipation RatingChart shown in Fig.l presents graphically the

maximum rated plate dissipation of the 2CW4, 6CW4, and 13CW4 for various minimum

•

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