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