TUBE: 5881
FICHIER SOURCE: sheets/127/5/5881.pdf
FABRICANT: Tung-Sol Electric Inc., Electron Tube Division, Bloomfield, New Jersey
ANNÉE: 1962 (JUNE 1, 1962, PLATE #6462/6463/6484)
TYPE: Beam Pentode (beam power tube)

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TUNG-SOL 5881
BEAM PENTODE
COATED UNIPOTENTIAL CATHODE
HEATER: 6.3 VOLTS, 900 MA. AC OR DC
ANY MOUNTING POSITION
GLASS BULB, T-11
SHORT INTERMEDIATE SHELL 7 PIN OCTAL B7-47, OUTLINE 11-1
Dimensions: 1.437" MAX, 2.906" MAX, 3.468" MAX

BASING DIAGRAM (BOTTOM VIEW) JEDEC 7AC:
Pin 1 - NC
Pin 2 - H (Heater)
Pin 3 - P (Plate)
Pin 4 - G2
Pin 5 - G1
Pin 7 - H (Heater)
Pin 8 - K,G3 (Cathode, Grid No.3)

"THE 5881 IS THE ELECTRICAL EQUIVALENT TO TYPES 6L6 AND 6L6G EXCEPT THAT THE PLATE AND SCREEN DISSIPATION RATINGS HAVE BEEN INCREASED APPROXIMATELY 20 PERCENT..."

RATINGS (Design Center System):
MAXIMUM HEATER-CATHODE VOLTAGE ... 200 VOLTS
MAXIMUM PLATE VOLTAGE ... 400 VOLTS
MAXIMUM GRID #2 VOLTAGE ... 400 VOLTS
MAXIMUM PLATE VOLTAGE (TRIODE CONNECTION) ... 400 VOLTS
MAXIMUM PLATE DISSIPATION ... 23 WATTS
MAXIMUM GRID #2 DISSIPATION ... 3 WATTS
MAXIMUM PLATE DISSIPATION (TRIODE CONNECTION) ... 26 WATTS
MAXIMUM GRID RESISTANCE (FIXED BIAS) ... 0.1 MEGOHM
MAXIMUM GRID RESISTANCE (SELF BIAS) ... 0.5 MEGOHM

TYPICAL OPERATING CONDITIONS AND CHARACTERISTICS
CLASS A1 AMPLIFIER - SINGLE TUBE
PLATE VOLTAGE ... 250 / 300 / 350 VOLTS
GRID #2 VOLTAGE ... 250 / 200 / 250 VOLTS
GRID #1 VOLTAGE ... -14 / -12.5 / -18 VOLTS
PEAK AF SIGNAL VOLTAGE ... 14 / 12.5 / 18 VOLTS
TRANSCONDUCTANCE ... 6100 / 5300 / 5200 µMHOS
PLATE RESISTANCE ... 30000 / 35000 / 48000 OHMS
ZERO-SIGNAL PLATE CURRENT ... 75 / 48 / 53 MA
ZERO-SIGNAL GRID #2 CURRENT ... 4.3 / 2.5 / 2.5 MA
MAXIMUM SIGNAL PLATE CURRENT ... 80 / 55 / 65 MA
MAXIMUM SIGNAL GRID #2 CURRENT ... 7.6 / 4.7 / 8.5 MA
LOAD RESISTANCE ... 2500 / 4500 / 4200 OHMS
POWER OUTPUT ... 6.7 / 6.5 / 11.3 WATTS
TOTAL HARMONIC DISTORTION ... 10 / 11 / 13 PERCENT

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CLASS A1 AMPLIFIER - SINGLE TUBE - TRIODE CONNECTION (Grid #2 connected to plate)
PLATE VOLTAGE ... 250 / 300 VOLTS
GRID VOLTAGE ... -18 / -20 VOLTS
PEAK AF SIGNAL VOLTAGE ... 18 / 20 VOLTS
ZERO-SIGNAL PLATE CURRENT ... 52 / 78 MA
MAXIMUM SIGNAL PLATE CURRENT ... 58 / 85 MA
AMPLIFICATION FACTOR ... 8 / ---
TRANSCONDUCTANCE ... 5250 / --- µMHOS
LOAD RESISTANCE ... 4000 / 4000 OHMS
TOTAL HARMONIC DISTORTION ... 6 / 5.5 PERCENT
POWER OUTPUT ... 1.4 / 1.8 WATTS

CLASS A1 PUSH-PULL AMPLIFIER (2 tubes):
PLATE VOLTAGE 250/270; GRID#2 250/270; GRID#1 -16/-17.5; PEAK AF G-G 32/35
TRANSCONDUCTANCE (EACH) 5500/5700; PLATE RESISTANCE (EACH) 24500/23500
ZERO-SIG PLATE I 120/134; ZERO-SIG G2 I 10/11; MAX-SIG PLATE I 140/155; MAX-SIG G2 I 16/17
LOAD RES 5000/5000; POWER 14.5/17.5 W; THD 2/2%

CLASS AB1 PUSH-PULL AMPLIFIER (2 tubes):
PLATE 360/360; G2 270/270; G1 -22.5/-22.5; PEAK AF G-G 45/45
ZERO-SIG PLATE I 88/88; ZERO-SIG G2 I 5/5; MAX-SIG PLATE I 132/140; MAX-SIG G2 I 15/11
LOAD 6600/3800; POWER 26.5/18 W; THD 2/2%

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CLASS AB1 PUSH-PULL - TRIODE CONNECTION (2 tubes):
HEATER VOLTAGE 6.3 V; HEATER CURRENT 0.9 A; PLATE 400 V; GRID -45 V; PEAK AF G-G 90 V
ZERO-SIG PLATE I 65 MA; MAX-SIG PLATE I 130 MA; LOAD 4000 OHMS; THD 4.4%; POWER 13.3 W

CLASS AB2 PUSH-PULL (2 tubes):
HEATER 6.3/6.3 V; HEATER CURRENT 0.9/0.9 A; PLATE 360/360 V; G2 225/270 V; G1 -18/-22.5 V; PEAK AF G-G 52/72 V
ZERO-SIG PLATE I 78/88; ZERO-SIG G2 I 3.5/5; MAX-SIG PLATE I 142/205; MAX-SIG G2 I 11/16
LOAD 6000/3800; POWER 31/47 W; THD 2/2%
[bas de page: courbes Triode Connection Ip vs Vp, Ec1 family]

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[courbes seules — Pentode Connection Ec2=250V plate characteristics; Pentode Connection Ec1=0V]

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[courbes seules — distortion vs power output & vs load resistance, Pentode Connection]

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[courbes seules — Ultra-Linear Output Stage circuit + plate family Eg2=400+.43ΔEp]
Circuit notes: Eb=450V, Esig=80V p-p, Po=20W, Dist.=2.5%, Rl=6K