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Vacuum Tube - 2A3, JJ Electronics
The JJ Electronic 2A3 features a robust construction in a beautiful thick glass envelope. The JJ 2A3 offers 40 Watts of plate dissipation which far surpasses the headroom of other 2A3 tubes by 25 Watts. The single plate build and increased ratings give this tube the highest reliability. The JJ 2A3 has amazing detail and clarity with excellent separation.
RoHS Compliant
| Single or Matched | Our Part Number | UPC/EAN | JJ Electronics Part Number |
|---|---|---|---|
| Matched Pair | T-2A3-40-JJ-MP | 609722122733 | |
| Matched Quad | T-2A3-40-JJ-MQ | 609722122740 | |
| Single | T-2A3-40-JJ | 609722122726 | 2A3-40 |
| Body Height | 150 mm | ||
| Filament Current (If) | 2.5 A | ||
| Filament Voltage (Uf) | 2.5 V | ||
| Gain (μ) | 4.2 | ||
| Grid Voltage (Ug) | -45 V typical | ||
| Grid capacitance (cg1) | 17 pF | ||
| Grid to Plate Capacitance (ca/g) | 7.5 pF | ||
| Internal Resistance (Ri) | 800 Ω | ||
| Item Diameter | 63 mm | ||
| Item Height | 165 mm | ||
| Plate Capacitance (ca) | 11 pF | ||
| Plate Current (Ia) | 60 mA | ||
| Plate Dissipation (Wa) | ≤ 40 W | ||
| Plate Voltage (Ua) | ≤ 450 V, 250 V typical | ||
| Transconductance (S) | 5.25 mA/V | ||
| Packaging Dimensions | Matched Pair version | T-2A3-40-JJ-MP | 7.4 in. × 6.9 in. × 3.5 in. |
| Matched Quad version | T-2A3-40-JJ-MQ | 7.4 in. × 6.9 in. × 6.9 in. | |
| Single version | T-2A3-40-JJ | 3.5 in. × 3.8 in. × 7.3 in. | |
| Weight (Packaging) | Matched Pair version | T-2A3-40-JJ-MP | 0.8466 lbs. |
| Matched Quad version | T-2A3-40-JJ-MQ | 1.6932 lbs. | |
| Single version | T-2A3-40-JJ | 0.4233 lbs. |
| T-2A3-40-JJ-MQ - Matched Quad version | Body Height | 150 mm |
| Filament Current (If) | 2.5 A | |
| Filament Voltage (Uf) | 2.5 V | |
| Gain (μ) | 4.2 | |
| Grid Voltage (Ug) | -45 V typical | |
| Grid capacitance (cg1) | 17 pF | |
| Grid to Plate Capacitance (ca/g) | 7.5 pF | |
| Internal Resistance (Ri) | 800 Ω | |
| Item Diameter | 63 mm | |
| Item Height | 165 mm | |
| Plate Capacitance (ca) | 11 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 40 W | |
| Plate Voltage (Ua) | ≤ 450 V, 250 V typical | |
| Transconductance (S) | 5.25 mA/V | |
| T-2A3-40-JJ-MP - Matched Pair version | Body Height | 150 mm |
| Filament Current (If) | 2.5 A | |
| Filament Voltage (Uf) | 2.5 V | |
| Gain (μ) | 4.2 | |
| Grid Voltage (Ug) | -45 V typical | |
| Grid capacitance (cg1) | 17 pF | |
| Grid to Plate Capacitance (ca/g) | 7.5 pF | |
| Internal Resistance (Ri) | 800 Ω | |
| Item Diameter | 63 mm | |
| Item Height | 165 mm | |
| Plate Capacitance (ca) | 11 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 40 W | |
| Plate Voltage (Ua) | ≤ 450 V, 250 V typical | |
| Transconductance (S) | 5.25 mA/V | |
| T-2A3-40-JJ - Single version | Body Height | 150 mm |
| Filament Current (If) | 2.5 A | |
| Filament Voltage (Uf) | 2.5 V | |
| Gain (μ) | 4.2 | |
| Grid Voltage (Ug) | -45 V typical | |
| Grid capacitance (cg1) | 17 pF | |
| Grid to Plate Capacitance (ca/g) | 7.5 pF | |
| Internal Resistance (Ri) | 800 Ω | |
| Item Diameter | 63 mm | |
| Item Height | 165 mm | |
| Plate Capacitance (ca) | 11 pF | |
| Plate Current (Ia) | 60 mA | |
| Plate Dissipation (Wa) | ≤ 40 W | |
| Plate Voltage (Ua) | ≤ 450 V, 250 V typical | |
| Transconductance (S) | 5.25 mA/V |
 Specification Sheet | All Models |
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