JJ 5881 Platinum Matched Vaacum tube

A.F. BEAM PENTODE
5881 is a beam power pentode with a maximum plate dissipation of 23W in the classical short bulb. It is very similar to the 6L6 sound but with less power. It can be used in any 6L6 amplifier.

Specifications

• Base: OCTAL
• Heater Voltage (Uf): 6.3 V
• Heater Current (If): 0.9 A

Typical Characteristics (Class A1):

• Single Tube:

  • Anode Voltage (Ua): 250 V
  • Screen Grid Voltage (Ug2): 250 V
  • Control Grid Voltage (Ug1): -14 V
  • Anode Current (Ia): 63 mA
  • Screen Grid Current (Ig2): 4.3 mA
  • Anode Load (Ra): 2.5 kΩ
  • Output Power (N): 6.7 W

• Push-Pull:

  • Anode Voltage (Ua): 270 V
  • Screen Grid Voltage (Ug2): 270 V
  • Control Grid Voltage (Ug1): -17.5 V
  • Anode Current (Ia): 134 mA
  • Screen Grid Current (Ig2): 11 mA
  • Anode Load (Ra-a): 5 kΩ
  • Output Power (N): 17.5 W

Limiting Values:

• Triode:

  • Maximum Anode Voltage (Ua): 450 V

• Pentode:

  • Maximum Anode Voltage (Ua): 500 V
  • Maximum Screen Grid Voltage (Ug2): 450 V
  • Maximum Anode Dissipation (Wa): 23 W

• Grid No. 1 Circuit Resistance:

  • Fixed Bias: 0.1 MΩ
  • Self Bias: 0.5 MΩ