Western electric 258 b brochure

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western electric 258 b brochure

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Page 1

BELL SYSTEM PRACTICES SECTION 4612583
Transmission Engineering and Data Issue 2, ADIll 1963
Electron Tube Data A.T.& T.Co. Standard

ELECTRON TUBE DATA SHEET
WESTERN ELECTRIC 2583 ELECTRON TUBE

DESCRIETIOL'
The 25813 is a mercury-vapor dio se in high voltage rectifier circuits.
The latest getter-ins techn' s a ials are employed in this tube to

insure greater service 1i


MAXIMUM RATINGS

Peak Anode Voltage . . . . . . . . . . . . . . . 7500 volts
Average Cathode Curren . . . . . . . . . . . . . . . 0.61. ampere

FILE: RECTIFIER n? TION

© American Telephone and Telegraph Company 1963

2588

Page 2

2583 - Page 2

IAXIIUII RATINGS. ABSOLUTE VALUfi

Peak Inverse Anode Voltage . . . . . . . . . . . . . . 7500 volts
Cathode Current

Peak....................... 2.5anperes
Average...... ..... ........... 0.6Lamperes
Surge (maxi-um duration 0.1 second) . . . . . . . . 25 amperes
Averagins'lime................... Sseconds

Condensed lercury Temnsrature Lilits . . . . . . . . . +20 to +70 centigrade

ELECTRI CAL DATA

am Basel k?
Filament Voltage . . . . . . . . . . . . . . . 2.37 2.5 2. 2 volts

Filament Current at 2.5 volts . . . . . . . . ---- 7.5 8.25 amperes
Filament Heating Time Required1 . . . . . . . 15 --- ---- seconds
Anode Voltage Drop . . . . . . . . . . 3 . . . ---- lS ---- volts
Critical Anode Voltage . . . . . . . . . . . . ---- --- 50 volts

IECHANI C A]. DATA

TypeofCooling.................. Convection

Equilibriul Condensed Mercury Temperature
Rise Above Albieut, Approximate

AtFullLoad.................. 20centigrade

AthIoLoad................... 16centigrade
Haunting Positionz . . . . . . . . . . . . . . . . . Vertical, base end down
Net Height. Approximate . . . . . . . . . . . . . . 3 ounces

1. leroury may become deposited on the tube elements in shipment, storage
or handling. When using the tube for the first time, or after handling,
a filament heating period of 15 to 30 minutes should he allowed to

properly distribute the mercury.
d. Sufficient clearance should be allowed around the tube to insure free
air circulation.

N
O

2.37 VOLTS

m I3 0-)

AMBIENT IN DEGREES C
.p

CONDENSED MERCURY
TEMPERATURE RISE OVER

0 4 I 20 28 36 O
HEATING TIME IN MINUTES