Western electric 101 l brochure
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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.