Western electric 423 c brochure

Page 1

BELL SYSTEM PRACTICES SECTION A346.423C
Transmission Engineering and Data Issue 1, December 1962

Electron Tube Data A.T.& T. Co. Standard

ELECTRON TUBE DATA SHEET
WESTERN ELECTRIC 423C ELECTRON TUBE

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DESCRIPTION

The 4230 is 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 . . . . . . . . . . . . . . . . . . . .4 to 8 milliamperes
Anode Voltage Drop . . . . . . . . . . . . . . . . . . 100 volts
Regulation at 4 to 6 milliamperes d-c (Note 5-page 3). . . . . 0.75 volt

File: Cold Cathode Section

(:) American Telephone and Telegraph Company 1962

42.30

Page 2

423C -PDGE 2

RATINGS, Absolute System (Note 1)

Cathode Current, Forward

Maxmum . . . . . . . . . . . . . . . . . . 8 milliamperes
Minimum . . . . . . . . . . . . . . . . 4 milliamperes
Maximum Inverse Anode Current ' - - - - - - - - - - - - 0.0 milliampere
Ambient Temperature Limits - - - - - - - - - - ~ - - - -55 to +60 centigrade

ELECTRICAL DATA, Throughout Life
Min. Bogey Max.

Anode Breakdown Voltage . - - - - 135 160 volts
Anode Voltage Drop(Etd)at s Milliamperes(n- C)Note 2 - 99 100 103 volts
Regulation (4 to 6 Milliamperes,D- C) (Note 5) - - - . - 0.3 0.75 volt

Temperature Sensitivity of Anode Voltage Drop

Anode Current, 4 Milliamperes (D- C) - -0.01 - volt/c
Anode Current, 8 Milliamperes (D- C) - -0-02 - volt/c
Fluctuation(Note 3)- - - - - 0.02 0.1 volt
Average Ionization Time (Note 4)- - - - - - - - - . - 4.0 6.0 milliseconds
MECHANICAL DATA
Mounting Position . . . . . . . . . . . . . . . . . . . . Any
Net Weight, Approximate . - . - - - - - - - - . - - . . . 0 3 ounce
Bulb . . . . . . . . . . . . . . . . . . T 6%
Base - - . . . . - . . Small Button 9 pin
Dimensions and connections shown in outline drawing on page 4.
LIFE DATA
Regulation (4 to 6 mAdc) after 1000 hours at 5 mAdc (Note 5). . . . See Figure 1
Drlft in Anode Voltage Drop (Etd) in 1000 hours at 5 mAdc . - - - - See Figure 2

HANDLING

This tube contains a small amount of krypton-85 gas which is a by-product
radioactive material. The amount of krypton-85 is less than five microcuries, which
is too small an amount to require any special care in use.

Atomic Energy Commission regulations require that the individual tube carton
for tubes containing by-product radioactive material be appropriately marked. The
marking includes the statement that tube disposal should be in approved manner.

Approved instructions for disposal of tubes containing krypton-85 are as
follows;

Tubes to be disposed of should be broken or crushed in a well
ventilated place releasing any resulting vapors to the outside
atmosphere. The residual broken or crushed tubes should be dis-
posed of in a normal public trash disposal system. Tubes should be
disposed of at a rate of not more than 100 each week from any one
location. Avoid breathing vapors from broken tubes.

Note 1: In the "Absolute System" the maximum ratings specified are limiting values above which the
serviceability of the device may be impaired from the viewpoint of life and satisfactory
performance. Maximum ratings, as such, do not constitute a set of operating conditions and
all values may not, therefore, be attained simultaneously.