Western electric 411 a brochure

Page 1

BELL SYSTEM PRACTICES SECTION AElLéiLllA
Transmission Engineering and Data Issue 1, January, 19L|9
Electron Tube Data. ATMCO Standard

ADVANCE ELECTRON TUBE DATA SHEET
WESTERN ELECTRIC 4 A ELECTRON TUBE

COLD CATHOD-

" cATHODE STARTER CATHODI:
%MAX"" (YELLOW) (GREEN)
_ TI-IRU Iaooo OHMS
7 \ RESISTANCE
.422" MIN.-
OPAQUE
T9 <-OOATING -
BULB 0N BULB
7" u
- MAX. .2II MIN
2 8 SEE NOTE I
|_7" . STARTER ANODE
I64 MAx, (RED)
THRU eeooo OHMS
N f No. I27 CORD RESET/Ame
TIP
rDlMENSION "A"
LocATING
I / PIN
L..- 35 MOUNTINGJ 16 l"1213055" EOIo
.. 0 SURFACE l 375,,
ALL LEADS 35-2 :% "1:2005" "
.. " VIEW SHOWING
J64 '33 X Ii SCREW MOUNTING DIMENSIONS
SUPPLIED WITH TUBE
ALLOWS FOR MOUNT-
'{.l3 9.. A BRACKET NOTE I: CLEARANCE DIMENSIONS TO APPLY
3-2-75 THlCK- - WITHIN DIMENSION "A' ONLY

DESCR l PTION

The RNA is a four-electrode, inert-oaS-filled, cold cathode tube for use as a relay.

MAXIMUM RATINGS, Absolute Values
-_-._*

Maximum Peak Voltage, Forward or Inverse '
Anode to Cathode ................................................. I80 volts
Anode to Starter Cathode 180 volts
Cathode to Starter Cathode ....................................... I80 volts
Maximum Cathode Current
Peak ............................................................. IOO milliamneres
Average ............. 35 milliamperes
Maximum Averaging Time ........................................... 2 seconds
Maximum Starter C th 69 Current
Peak milliamperes
Average mil I lamperes
Maximum Av . seconds
Maximum Peak inverse Curre
Anode ................. . mil 1 iamperes
Starter Anode milliampere
Frequency ............... cycles/second

Ambient Temperature Limits ....... centigrade

Electrical and Mechanical Data on reverse side

Western Electric

Page 1

Page 2

SECTION ABh6.hllA

ELECTRICAL DATA

Min. Bogey Max.

Starter Breakdown Voltage .......... 62 70 85 volts
Starter Voltage Drop at 3 Millianperes . 50 60 70 volts
Anode Voltage Drop at 20 Millianperes . 58 7O 80 volts

Required Transfer Current at IIO Anode Vo ts 600 microanPIrES

Required Negative Cathode Transfer Voltage" ..... U5 volts

Deionization Time, Approximate
Starter Gap .
Main Cap

.05 milliseconds
. 5 milliseconds

MECHANICAL DATA

Mounting Position ..

Any
Net Weight, Approximate ..

[.3 ounces

'To assure transfer of conduction from the starter anode - starter cathode gap to the .
anode - starter cathode gap.

"To assure transfer of conduction fro! the anode - starter cathode gap to the anode -
cathode cap with La nilliampere flowing from anode to starter cathode. Voltage measured
with respect to starter cathode.

MIA ISSUEI 2-20-8 PRINTED IN U.S.A.

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2 Pages