Vacuum Tube - 7591, JJ Electronics
The JJ Electronic 7591 is a reliable and accurate reproduction of the classic tube. This 19 Watt pentode has been used in a variety of amplifiers including Hi-Fi amps and Ampegs. The JJ 7591 is a great replacement for any 7591 tube position.
Matched versions of this tube use Apex Matching
RoHS Compliant
Accessory Items:
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Apex Matched Pair | T-7591-S-JJ-MP | 609722122924 | |
| Apex Matched Quad | T-7591-S-JJ-MQ | 609722122931 | |
| Single | T-7591-S-JJ | 609722122917 | 7591S |
| Body Height | 93 mm | |
| Cathode Current (Ik) | ≤ 85 mA | |
| Filament Current (If) | 0.8 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 16.8 | |
| Grid 2 dissipation (Wg2) | 3.3 W | |
| Grid Circuit Resistance (Rg), Cathode Bias | 1 MΩ | |
| Grid Circuit Resistance (Rg), Fixed Bias | 0.3 MΩ | |
| Grid Current 2 (Ig2) | 8 mA | |
| Grid Voltage 1 (Ug1) | -10 V typical | |
| Grid Voltage 2 (Ug2) | ≤ 440 V, 300 V typical | |
| Grid capacitance (cg1) | 10 pF | |
| Grid to Plate Capacitance (ca/g) | 0.25 pF | |
| Item Diameter | 33.3 mm | |
| Item Height | 79 mm | |
| Plate Capacitance (ca) | 5 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 19 W | |
| Plate Voltage (Ua) | ≤ 550 V, 300 V typical | |
| Transconductance (S) | 10 mA/V |
| Packaging Dimensions | Apex Matched Pair version | T-7591-S-JJ-MP | 4.8 in. × 3.3 in. × 1.6 in. |
| Apex Matched Quad version | T-7591-S-JJ-MQ | 4.8 in. × 3.3 in. × 3.3 in. | |
| Single version | T-7591-S-JJ | 1.6 in. × 1.6 in. × 4.6 in. | |
| Weight (Packaging) | Apex Matched Pair version | T-7591-S-JJ-MP | 0.228 lbs. |
| Apex Matched Quad version | T-7591-S-JJ-MQ | 0.456 lbs. | |
| Single version | T-7591-S-JJ | 0.114 lbs. |
| T-7591-S-JJ-MP - Apex Matched Pair version | Body Height | 93 mm |
| Cathode Current (Ik) | ≤ 85 mA | |
| Filament Current (If) | 0.8 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 16.8 | |
| Grid 2 dissipation (Wg2) | 3.3 W | |
| Grid Circuit Resistance (Rg), Cathode Bias | 1 MΩ | |
| Grid Circuit Resistance (Rg), Fixed Bias | 0.3 MΩ | |
| Grid Current 2 (Ig2) | 8 mA | |
| Grid Voltage 1 (Ug1) | -10 V typical | |
| Grid Voltage 2 (Ug2) | ≤ 440 V, 300 V typical | |
| Grid capacitance (cg1) | 10 pF | |
| Grid to Plate Capacitance (ca/g) | 0.25 pF | |
| Item Diameter | 33.3 mm | |
| Item Height | 79 mm | |
| Plate Capacitance (ca) | 5 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 19 W | |
| Plate Voltage (Ua) | ≤ 550 V, 300 V typical | |
| Transconductance (S) | 10 mA/V | |
| T-7591-S-JJ-MQ - Apex Matched Quad version | Body Height | 93 mm |
| Cathode Current (Ik) | ≤ 85 mA | |
| Filament Current (If) | 0.8 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 16.8 | |
| Grid 2 dissipation (Wg2) | 3.3 W | |
| Grid Circuit Resistance (Rg), Cathode Bias | 1 MΩ | |
| Grid Circuit Resistance (Rg), Fixed Bias | 0.3 MΩ | |
| Grid Current 2 (Ig2) | 8 mA | |
| Grid Voltage 1 (Ug1) | -10 V typical | |
| Grid Voltage 2 (Ug2) | ≤ 440 V, 300 V typical | |
| Grid capacitance (cg1) | 10 pF | |
| Grid to Plate Capacitance (ca/g) | 0.25 pF | |
| Item Diameter | 33.3 mm | |
| Item Height | 79 mm | |
| Plate Capacitance (ca) | 5 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 19 W | |
| Plate Voltage (Ua) | ≤ 550 V, 300 V typical | |
| Transconductance (S) | 10 mA/V | |
| T-7591-S-JJ - Single version | Body Height | 93 mm |
| Cathode Current (Ik) | ≤ 85 mA | |
| Filament Current (If) | 0.8 A | |
| Filament Voltage (Uf) | 6.3 V | |
| Gain (μ) | 16.8 | |
| Grid 2 dissipation (Wg2) | 3.3 W | |
| Grid Circuit Resistance (Rg), Cathode Bias | 1 MΩ | |
| Grid Circuit Resistance (Rg), Fixed Bias | 0.3 MΩ | |
| Grid Current 2 (Ig2) | 8 mA | |
| Grid Voltage 1 (Ug1) | -10 V typical | |
| Grid Voltage 2 (Ug2) | ≤ 440 V, 300 V typical | |
| Grid capacitance (cg1) | 10 pF | |
| Grid to Plate Capacitance (ca/g) | 0.25 pF | |
| Item Diameter | 33.3 mm | |
| Item Height | 79 mm | |
| Plate Capacitance (ca) | 5 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 19 W | |
| Plate Voltage (Ua) | ≤ 550 V, 300 V typical | |
| Transconductance (S) | 10 mA/V |
 Specification Sheet | All Models |
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Substitute Products
The following items can be substituted for this product. While not necessarily exactly the same, they will function as replacement items in your project.
