Western electric 416 a brochure

Page 1

BELL SYSTEM'PRACTICES .fi: SECTION Madam
Transmission Engineering and Data WM Issue 1, June, 1919
Electron Tuba Data m gfi AT&TCo Standard

ADVANCE ELECTRON TUBE DATA SHEET )1???
i
WESTERN ELECTRIC 4I6A ELECTRON TUBE

BASE SHALL BE CAPABLE 07

BEING INSERTED FREELV INTO
A 1/l6 THIGKNESS GAUGE WITH
5 HOLES DISPOSED AS SHOWN

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J won

4355000:
we: -\
.055:
moo,
15'20'5 "0"
1-3: .
1437' 055.
:090'

rewars
\
uonT rune: FIT-N- .250':.co:'nu.
naus:
aorram VIEW
INTERNAL
wunzmnou- ammo:
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75' ¢ L
momma pm 5 *0 i
.
5 .
A A \
1-4 \\E ,5.
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more: suarAcEs or a-r crmone, cam nun
PLATE CONNECTIONS sou: PLATED HEATER- HEATER
VIEW A-A

DESCRIPTION

The MBA is a disc-seal planar type triode designed for use as an amnlifier or frequency
multiplier at freouencces in the order of H000 megacycles.

MAXIMUM RATINGS, ABSOLUTE VALUES

Plate Voltage ...... 250 volts
Grid Voltage ..... +|.0 volt
Plate Current . . 33 mllliamperes
Grid Current . IO milliamperes
Plate Dissipat .. . 7.5 watts

Plate Seal Temperatu e l25° Centigrade
Grid Seal Temperature ... l00° Centigrade
Heater-Cathode Voltage ............................................. 145 volts

Page 2

GENERAL CHARACTERISTICS
ELECTRICAL DATA

Heater Voltage . 6.3
Heater Current . l.85
Amplification Fac or . 300
Transconductance (I = 50000
Direct Interelectroge Capacitances
Grid to Plate ................................................. l.25
Grid to Shell' .. 7.5
Plate to Shell .. 0095
Cathode to Shell .............................................. H2.5

Cathode connected to shell through cathode to shell capacitance

MECHANICAL DATA

Cathode ..
Mounting Posl
Weight, Approximate ..................

TYPICAL OPERATING CONDITIONS AND CHARACTERISTICS

Plate Voltage ..................................................... 200
Plate Current .. . 30
Plate Dissipation ... 6
Cathode Bias Resistor 250
Grid Supply Voltage . 8
Frequency . ... "000
Gain (50 Mi ts Output 9
Gain (500 MilliIatts Output) 3
Band Width (3 db Down) ...... 100

4|6A PRINTED IN U.S.A.

volts
amperes

micromhos

in
m
uuf
uuf

Unipotential
Any
I ounce

volts
nilliamperes
watts

ohms

volts
megacycles
decibels
decibels
megacycles