ampage
tube data
ampage
tube data

5881
BEAM POWER TUBE
PinElement
1none
2Heater (Filament)
3Plate (Anode)
4Screen Grid
5Control Grid
6none
7Heater (Filament)
8Cathode
Used in the output stage of audio amplifying equipment,
especially units designed to have ample reserve of
power-delivering ability. These tubes provide high
power output, sensitivity, and high efficiency. Power
output at all levels has low third- and higher-order
harmonics. Tubes require octal socket and may be
mounted in any position. It is especially important that
these tubes, like other power-handling tubes, be
adequately ventilated. For typical operation as push-pull
class A1, class AB1 (within maximum ratings), and class
AB2 amplifier, refer to type 6L6GC .



Heater Voltage (AC/DC) 6.3volts
Heater Current0.9ampere
Heater Warm-up Time (Average)11seconds


Peak Heater-Cathode Voltage
Heater negative with respect to cathode200 maxvolts
Heater positive with respect to cathode200 max


Direct Interelectrode Capacitance (Approx.)
Grid No.1 to Plate0.6pf
Grid No.1 to Cathode, Heater, Grid No.2, and Grid No.310
Plate to Cathode, Heater, Grid Ho.2, and Grid No.36.5

CLASS A1 AMPLIFIER


Maximum Ratings (Design Center Values)
Plate Voltage400volts
Grid-No.2 (Screen-Grid) Voltage400
Plate Dissipation23watts
Grid-No.2 Input3


Typical Operation
Plate Voltage250300350volts
Grid-No.2 Voltage250200250
Grid-No.1 (Control-Grid) Voltage-14-12.5-18
Peak AF Grid-No.1 Voltage1412.518
Zero-Signal Plate Current754853ma
Maximum-Signal Plate Current805565
Zero-Signal Grid-No.2 Current4.32.52.5
Maximum-Signal Grid-No.2 Current7.64.78.5
Plate Resistance (Approx.)300003500048000ohms
Transconductance610053005200umhos
Load Resistance250045004200ohms
Total Harmonic Distortion101113%
Maximum-Signal Power Output6.76.511.3watts

CLASS A1 AMPLIFIER - Triode Connection
(Grid No. 2 connected to plate)


Maximum Ratings (Design Center Values)
Plate Voltage400volts
Plate Dissipation26watts


Typical Operation
Plate Voltage250300volts
Grid-No.1 (Control-Grid) Voltage-18-20
Peak AF Grid-No.1 Voltage1820
Zero-Signal Plate Current5278ma
Maximum-Signal Plate Current5885
Plate Resistance (Approx.)1700ohms
Amplification Factor8
Transconductance5250umhos
Load Resistance4000ohms
Total Harmonic Distortion65.5%
Maximum-Signal Power Output1.41.8watts

Maximum Circuit Values
Grid No. 1 Circuit Resistance
For fixed-bias operation0.1megohm
For cathode-bias operation0.5