Western electric 315 a brochure

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BELL SYSTEM PRACTICES SECTION AB46.315A
TRANSMISSION ENGINEERING AND DATA ISSUE 1, APRIL I943
ELECTRON TUBE DATA A.T.&T_ CO. STANDARD

RECTIFIER .
HALF-WAVE, MERCURY-VAPOR @5121?! 519617

. . DESCRIPTION

The 315A is a half~wave, mercury-vapor rectifier tube for use in high-voltage rectifier
circuits.

MAXIMUM RATINGS

Peak Inverse Anode Voltage I . . . . . . . .12500 volts
. Average Cathode Current (Quadrature Operation) . . . . . . 2 amperes

ELECTRON TUBE DATA SHEET
FILE: RECTIFIER SECTION
6-47

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315A - PAGE 2

MAXIMUM RATINGS, ABSOLUTE VALUES

Peak Inverse Anode Voltage for
Condensed Mercury Temperature 20 to 55 C 1 , 1 . . . , 12500 volts
Condensed Mercury Temperature 20 to 65 C . . , . . . . 7500 volts

Cathode Current

Peak
In-phase Operation . . . . . . . . 1 . . . 1 . 4 amperes
Quadrature Operation. 8 amperes
Average
In-phase Operation 1 ampere
Quadrature Operation. 2 amperes
Surge (maximum duration 0.1 second) . . . . , . . 40 amperes
Averaging Time . . _ , . . . . 1 . . , 1 . . . . 15 seconds
Frequency . . . . . . . . . . . . . . 1 . 1 . . . 150 cycles sec.
ELECTRICAL DATA Min. Bogev 1.
Filament Voltage . V . . . . . . . . . 4.75 5. O 5. 25 volts
Filament Current at 5 volts . . . . . . . 1 . 10 11.5 amperes
Cathode Heating Time. Required . . . . . . . 30 seconds
Anode Voltage Drop . . . . . . . . . . . . 15 volts
Critical Anode Voltage , . . . . . . . . . . 100 volts

MECHANICAL DATA

Net Weight, Approximate . . . . . , . 10 ounces
Equilibrium Condensed Mercury Temperature Rise
At Full Load Approximate . . . . . . . . . . . 18 centigrade
At No Load Approximate . . . . . . . . . . . . . 15 centigrade
Cooling . . . Convection
Mounting . . This tube should be mounted in a vertical position only, with the

base end down. Suflicient clearance should be maintained around
the tube to insure free air circulation.

RATE OF CONDENSED MERCURY
TEMPERATURE RISE

CONDENSED MERCURY
KS 51 8

TEMPERATURE RISE DEG. C
on

:-

0 10 20 30 40 50 60
TIME IN MINUTES