Vacuum Tube - 2A3, JJ Electronics

Vacuum Tube - 2A3, JJ Electronics

JJ Electronics
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Starting at: $129.95
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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
SKU:
T-2A3-40-JJ
Item ID:
004508
Brand:
JJ Electronics
Type:
Part Numbers
Single or MatchedOur Part NumberUPC/EANJJ Electronics Part Number
Matched PairT-2A3-40-JJ-MP609722122733
Matched QuadT-2A3-40-JJ-MQ609722122740
SingleT-2A3-40-JJ609722122726 2A3-40
Product Measurements by Type
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 versionT-2A3-40-JJ-MP7.4 in. × 6.9 in. × 3.5 in.
Matched Quad versionT-2A3-40-JJ-MQ7.4 in. × 6.9 in. × 6.9 in.
Single versionT-2A3-40-JJ3.5 in. × 3.8 in. × 7.3 in.
Weight (Packaging)Matched Pair versionT-2A3-40-JJ-MP0.89 lbs.
Matched Quad versionT-2A3-40-JJ-MQ1.78 lbs.
Single versionT-2A3-40-JJ0.445 lbs.
Product Measurements by Item
T-2A3-40-JJ-MQ - Matched Quad versionBody 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
T-2A3-40-JJ-MP - Matched Pair versionBody 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
T-2A3-40-JJ - Single versionBody 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

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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 17th, 2019.
BradWbr
March 18th, 2019
Staff Member
If your amp calls for 2A3 tubes, these will work.

Product Reviews

5.00 out of 5 based on 1 reviews
- July 30th, 2020
5 out of 5

Lives up to its reputation. Easily trumps my other 2A3 tubes' sound and power. Took my 2A3 SET amp from mmmmm-good to ahhhh-superb!