Western electric 101 l brochure

Page 1

BELL SYSTEM PRACTICES SECTION AB46. 101 L
Transmission Engineering Data Issue 1, January 1950
Vacuum Tube Data A.T.&T. Car Standard

TRIODE .
AUDIO-FREQUENCY AMPLIFIER @5191?! EIeCfrIc

DESCRIPTION

The lOlL is a filamentary type triode. It is designed for use as an audio-frequency
amplifier or modulator.

CHARACTERISTICS

Filament Current . . a . . . . . . . 250 milliamperes
Maximum Plate Voltage . . . . . . . . . . . . 180 volts

Amplification Factor . . . . . . . . . . . . . 6.5

ELECTRON TUBE DATA SHEET
FILE: GENERAL PURPOSE SECTION

6-49 I 0' L

TRIODE

Page 2

101L- PAGE 2'

GENERAL CHARACTERISTICS
ELECTRICAL DATA

Filament Current .
Filament Voltage, NominaP
Direct Interelectrode Capacitances

Grid to Plate
[nput .
Output

MECHANICAL DATA

250 milliamperes
4.15 volts

without external

shield
6.0 uuf
3.9 uuf
2.8 uuf

Cathode . . , . . . . , . . . . . Coated Filament
Base . . - . , . . , . . . .VIedium 4-pin type with bayonet pin
Mounting Position. . . . , . . , I Preferably vertical; if horizontal, pins #1

and #2 must lie in same vertical plane

Dimensions and pin connections shown in outline drawing on Page 5

MAXIMUM RATINGS, Design-Center Values

Plate Voltage
Plate Dissipation .
Plate Current .

180 volts
2.0 watts
15 milliamperes

TYPICAL OPERATING CONDITIONS AND CHARACTERISTICS-CLASS Al AMPLIFIER

Filament Current, D-C , . . . . . . . . . . . 250
Plate Voltage . . . . . . . . . . . . . . 130
Grid Voltage. . . , I . . . . . . . . . -8
Peak A-F Grid Voltage . . . . . . . . . . . . 8
Plate Current , I I I . . . . . . . I . . 6.8
Transconductance . . . . . . . , , , I . . 1080
Amplification Factor . I . . . . . I . . . , 6.5
Plate Resistance. . . . . . . . . . . . . . 6000
Load Resistance , . . . . . . , . . . . . . 6000
Maximum Signal Power Output I . , . . . . . . 60
Total Harmonic Distortion Less ThanI . . . . . . . 3.4

250
160
- 10
10
10.2
1240
6.5
5200
5200
100
3.2

milliamperes
volts

volts

volts
miIliamperes
micromhos

ohms
ohms
milliwatts
per cent

'The filament resistance of this tube increases slightly during the first year of operating fa.
The voltage given above is the nominal value after the filament resistance has stabilized.