Vacuum Tube - 2A3, JJ Electronics

JJ Electronics
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Vacuum Tube - 2A3, JJ Electronics

Starting at: $129.95
In stock

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
Item ID:
JJ Electronics
Part Numbers
Single or MatchedOur Part NumberUPC/EAN
Matched PairT-2A3-40-JJ-MP609722122733
Matched QuadT-2A3-40-JJ-MQ609722122740
Product Measurements
Body Height150 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 Diameter63 mm
Item Height165 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 Information
Packaging DimensionsMatched Pair version7.4 in. × 6.9 in. × 3.5 in.
Matched Quad version7.4 in. × 6.9 in. × 6.9 in.
Single version3.5 in. × 3.8 in. × 7.3 in.
Weight (Packaging)Matched Pair version0.89 lbs.
Matched Quad version1.78 lbs.
Single version0.445 lbs.

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Specifications, Files, and Documents

PDF: Specification Sheet Specification Sheet659.95 KB

Questions and Answers

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Asked by Anonymous on March 18th, 2019.
March 18th, 2019
Staff Member
If your amp calls for 2A3 tubes, these will work.

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