Western electric 423 a brochure

Page 1

BELL SYSTEM PRACTICES SECTION ABL6.L23A

Transmission Engineering and Data ISSUE 3, DECEMBER 1952
Electron Tube Data A.T.& T.Co. STANDARD

ELECTRON TUBE DATA SHEET
WESTERN ELECTRIC 423A*ELECTRON TUBE

176% "

s;
:9
§

Elect

, Lg

DESCRIPTION

The SILO/LZBAFis a two-electrode inert-gas filled cold cathode tube designed
primarily for use as a voltage reference tube. This tube has characteristics
which are exceptionally stable with life and with variations in ambient
temperature.

CHARACTERISTICS

Cathode Current . .............. . . . . . . L to 8 milliamperes
Anode Voltage Drop . . . ........ . . . . . . . . . 100 volts
Regulation, Max. (A to 6 Milliamperes D-C) ........ 0.75 volt

FILE: COLD CATHODE SECTION
ISSUE 3, 11-52

423A*

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61L0/L23A - PAGE 2

RATINGS, Absolute Values

Cathode Current, Forward
Haximum . . . . . . . . . . . . . . . . . ......

Minimum . . . . . . . . . . . . . . . . . . . . . .
Maximum Inverse Anode Current . . . . . . . . . . . .

Ambient Temperature Limits . . . . . . . . . . . . .

8 milliamperes

L milliamperes
0.0 milliampere
-55 to + 60 centigrade

ELECTRICAL DATA
Hin. Bogey Max.

Anode Breakdown Voltage . . . ..... . --- 135 160 volts
Anode Voltage Drop at 6 Hilliamperes (D- C)l. . 99 100 103 volts
Regulation (A to 6 Hilliamperes, D- C). . . . . --- 0.3 0.75 volt
Temperature Sensitivity of Anode Voltage Drop

Anode Current, A Milliamperes (D-C) . . . . --- -0.0l --- volt/c

Anode Current, 8 Hilliamperes (D-C) . . . . --- -0.02 --- volt/c
Fluctuationz . . . . . . . . . . . . . . . . . --- 0.02 0.1 volt
Stability3.................. --- 0.05 0.2volt

MECHANICAL DATA

Mounting Position . . . . . . . . . . . . . . . . . . . Any

Net Weight, Approximate . . . . . . . . . . . . . . . . 0.3 ounce

Bulb . . . . . . . . . . . . . . . . . . . . . . . . . T 6-1/2
Base......................... SmallButtm9-pin

Note 1: These values are for new tubes. Anode voltage drop will stabilize
within 3 minutes after starting. The stability characteristic
should be considered during tube life.

Note 2: The anode voltage drop variation during a short period of time
(one to ten minutes), with the tube operating at one value of current
and temperature within its ratings, will not exceed the above stated
maximum value.

Note 3: The drift of anode voltage drop over a period of 1000 hours, with the
tube operating at one value of current and temperature within its
ratings, will not exceed the above stated maximum value.

Note L: Pins marked "N0 CONNECTION" should not be connected to any portion
of an external circuit. Failure to observe this precaution may result
in improper operation of the tube.