Western electric 313 cb brochure

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BELL SYSTEM PRACTICES AB46.313CB
Transmission Engineering and Data Issue 3, January 1962
Electron Tube Data A.T.& T. Co. Standard

ELECTRON TUBE DATA SHEET
WESTERN ELECTRIC BIBCB ELECTRON TUBE

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DESCRIPTION

The 313GB is a three-electrode, inert-gas-filled, cold cathode tube for use in
relay, voltage regulator, or rectifier circuits. This tube is especially suitable
for use in control circuits such as in triggering, counting, or switching apparatus.

CHARACTERISTICS

Peak Anode Voltage . . . . . . . . . . . . . . . . 170 volts
Average Cathode Current . . . . . . . . . . . . . . 7 72 milliamperes
Average Life, Approximate . . . . . . . . . . . . . 10000 10 hours

File: Cold Cathode Section

© American Telephone and Telegraph Company 1962 3|3CB

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3|3(SB- PAGE 2

MAXIMUM RATINGS, Absolute System (Note n

Forward Peak Anode Voltage,
Forward Cathode Current (Note 2)
Peak. . . . . .
Average
Averaging Time .
Peak InverSe Anode Current (Note 2).
Ambient Temperature Limits.

ELECTRICAL DATA, Throughout Life

Starter Breakdown Voltage(Note3)
Starter voltage Drop at 20 milliamperes
Anode Voltage Drop at 20 milliamperes
Transfer Current . .

Ionization Time - Starter Gap(Note 4).
Deionization Time, Approximate

Starter Gap.

Main Gap

Inverse Current at ~120 Volts Anode Potentia1(Note5).

MECHANICAL DATA

Mounting Position . .
Net Weight Approximate .

170 volts

72 milliamperes
25 milliamperes
2 seconds
5 milliamperes
~55 to +85 centigrade

Min. Bogey Max.

. 62 70 89 volts
. 52 60 74 volts
. 71 76 81 volts
.See Curve - Fig. 1
- 6 - milliseconds
- 3 - milliseconds
- 10 - milliseconds

- - 2 milliamperes

Any
1 Ounce

D1mens1ons and p1n COHUBCthIlS shown In outline drawmg on Page 4.

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.

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