T-6550-JJ-MP - Apex Matched Pair version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

T-6550-JJ-MQ - Apex Matched Quad version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

T-6550-JJ-MS - Apex Matched Sextet version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

T-6550-JJ-MPB - Apex Burned-In Matched Pair version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

T-6550-JJ-MQB - Apex Burned-In Matched Quad version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

T-6550-JJ-MSB - Apex Burned-In Matched Sextet version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

T-6550-JJ - Single version | Body Height | 110 mm |

Cathode Current (I_{k}) | ≤ 175 mA |

Filament Current (I_{f}) | 1.6 A |

Filament Voltage (U_{f}) | 6.3 V |

Grid 1 voltage (U_{g1}) | ≥ -300 V, -14 V typical |

Grid 2 current (I_{g2}) | ≤ 12 mA |

Grid 2 dissipation (W_{g2}) | 6 W |

Grid 2 voltage (U_{g2}) | ≤ 400 V, 250 V typical |

Grid capacitance (c_{g1}) | 14 pF |

Grid to Plate Capacitance (c_{a/g}) | 0.85 pF |

Internal Resistance (R_{i}) | 16 kΩ |

Item Diameter | 43 mm |

Item Height | 125 mm |

Plate Capacitance (c_{a}) | 12 pF |

Plate Current (I_{a}) | 140 mA |

Plate Dissipation (W_{a}) | ≤ 35 W |

Plate Voltage (U_{a}) | ≤ 600 V, 250 V typical |

Transconductance (S) | 11.8 mA/V |

## Product Reviews