Western electric 400 a brochure

Page 1

BELL SYSTEM PRACTICES
Transmission Engineering and Data
Electron Tube Data

ADVANCE ELECTRON TUBE DATA SHEET

WESTERN ELECTRIC 400A ELECTRON TUBE

-MEASURED AT %

3..
ra- MAX.

DIA. 0N BULB

GRIDS -FILAMENT-
i" #2 e.#4 . a GRID #5
2
. PLATEJ GRID #3
FILAMENT- FILAMENT+
a. GRID #5

_*uu III
m \ET-I MINIATURE

BUTTON 7-PIN BASE

CLASSIFICATION

Miniature Pantaorid Converter

MOUNTING

This tube may be mounted In any posItIon

MAXIMUM RATINGS (Design Center Values)
Plate Voltage .... ............. ....... ............. ......

Grids #2 and #n Voltage ............................ ......
Cathode Current

OPERATING CONDITIONS AND CHARACTERISTICS

Filament Voltage .........................................
Filament Current .........................
Plate Voltage .............
Grids #2 and #n Voltage .
Grid #| Resistor . ..

Plate Current ...
Cathode Current .

Conversion Transccnductance ................. .

INTERELECTRODE CAPACITANCES (No Shield)

Grid #3 to All Other Electrodes ..........................
Plate to All Other Electrodes

Grid #3 to Plate ..................

ISSUE I 5fl6'47

l35
I35

I.3
200

90

N5
|00.000
0.9
2.7
230

8.0
8.0
0.25

SECTION ABI46.LI.OOA
Issue 1, May, 19h8
AT&TCO Standard

PENTAG
CONVERTE

volts
volts

milliamperes

volts
milliamperes
volts

volts

ohms
milliampere
milliamperes

micromhos

unf
IIIJf

uuf

PRINTED IN U.S.A.

. WSW? 51¢

(trip

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Western Electric