Western electric 415 a brochure

Page 1

BELL SYSTEM PRACTICES
Transmission Engineering and Data
Electron Tube Data

ADVANCE ELECTRON TUBE DATA SHEET

WESTERN ELECTRIC 4|5A ELECTRON TUBE

%' MAX. -MEA§URED
Mil-30m. .
0N BULB.
l
+E
3" - 2
IZMAX.

JUUUU

E7-I MINIATURE

BUTTON 7-PIN BASE

HEATER -

/.

Iain,

PLATE

CATHODE AND
INTERNAL SHIELDS

SCREEN-GRID AND
INTERNAL SHIELD

CONTROL-GRID SUPPRESSOR-GRID

DESCRIPTION
Miniature Suppressor-Gr I d Pentode

MUNTING
This tube may be mounted in any position.
HEATER RATING

Heater Voltage, A-C or 0-0 .
Nominal Ileater Current

MAXIMUM RATINGS (Design Center Values)

Plate Voltage . ..... ....... ....... ...........
Screen-Grid Voltage ..... .. .......... ..
Positive Suppressor-Grid Voltage
Plate Dissipation ...... ..
Screen-Grld Dissipation

Cathode Current .......

Heater-Cathode Voltage

Bulb Temperature ......

OPERATING CONDITIONS AND CHARACTERISTICS

Plate Voltage I20
Screen-Grid Voltage IZ)
Suppressor-Grid Voltage -3
Control-Grid Voltage -2
Plate Current ....... 3.6
Screen-Grid Current .8
Transconductance, Contr l850
Transconducunce. Suppressor-Gri 8l0

SECTION ABh6.h15A
Issue 1, April, 1919
ATacTCo Standard

MINIATU

PENTOD
UHF

volts
millianperes

volts

volts

volts

watts

watt
milliamperes
volts
centigrade

volts
volts
volts
volts
milllamperes
nilliamperes
unhos
unbos

Page 2

CONTROL-GRID PLATE CURRENT CUT-OFF CHkRACTERISTICS

Plate Voltage ....... ..l ......... ........
Screen- Grid Voltage . ..... ..
Suppressor-Grid Voltage ...... ... ........
Control- -Grid Voltage (approximate) for Plate Current
of IO Microamperes .. .......... .. ...... .............................

SUPPRESSOR-GRIE FLLTE CURRENT CUT-OFF CHARACTERISTICS

Plate Voltage ......... ... . ....... .............
Screen- Grid Voltage . . . . . ......
Control- Grid Voltage ... . . ......... ...
Suppressor-Grin Volnage (npproxxm he) xor Plate
Gurrent of 10 Microamperes ............ ...... . ..... ... ..... . ...... ..

INTERELECTRODE CAPACITANCES (With RMA No. BIG Shield)

Plate to Control- Grid. Maximum ......

Input (61 to Heater, Cathode, 62 & 63)
OutpuliPlate to Heater, cathode GZ & G
Control- Grid to Suppressor- GrId .I....

'Excernal shield connected to cathode-pin #2.

NORMAL FENTODE CHARACTERISTICS

Ef=63 vous . 50:0
vomesazo vocrs
vomse=o

PL E CURRENT
IN MILLIAMPENES
PLATE CURRENT
IN MILLIAMPERES

EV '63 VOLTS

0 someoecroouaouosomoaooezozwzao 6 -5 -4 -3

I20 volts
l20 volts
0 volts
-7.5 volts
|20 volts
l20 volts
-2 volts
-10 volts
0.0|u ppf
'3.9 puf
'3.0 uuf
C.l pyf

EB=EGZ=|50

. Ea'5c2"5°

VOLTAGEO

E I2 mmuzovous .-
mums-o:
33.0 in sI-nvours
g; ac. H
I Id

3. a 3; | :
-5 n
Id 5
9.: 5 E;

l- 6.]
z: i
E: 4 o

_. W2
8 m-
m 2 hi

-2 -| O

PLATE VOLTAGE CONTROL- GRID VOLTAGE

m 51:53 vous
g ESSOR- GRIDl
flan VOLTAGE: o =
(D 5 i
g 5
Z s
m z
3: E
.J
I;
w W ens; vons
23 4°00 SJPPRESSOI-HSRID VOLT =
55 z - EB=E02=150
3 g 3000
'3 I:
z o
85 2000
2 a
3 I000
,_
o
-5 -4 -3 -2 -| o

CONTROL- GRID VOLTAGE