Active Member
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[China]
Address: Room 19, DuhuiXuan, ZhongHang Road, Futian Shenzhen, China
Contact name:Vanessa
Youda Audio Co. Limited |
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Premium Grade Stereo Vacuum Tubes Psvane Treasure 2A3-T 2A3 Mark II Guitar Tube Amp power triode
2A3-TII
TII-Series: Positioning in exceeding totally, not only exceed all
the same types of productions that always been imitating on the
market, but also to exceed itself.
2A3-TII is a direct-heated cathode power double triode, it is used
in classA1, AB1 amplifier.
Heater
Uf ………………………… 2.5 V
If…………………………2.5 A
Maximum Rating
Ua…………………………300 V
Pa…………………………15 W
Rg
with cathode bias…………………………0.5 MΩ
with fixed bias…………………………0.05 MΩ
Direct Interelectrode Capacitances
input………………………… 7.5 PF
output…………………………16.5 PF
grid to plate…………………………5.5 PF
Static parameter
Ua………………………… 300 V
-Ug………………………… 45 V
Ia………………………… 60 mA
Gm………………………… 5.25 mA/V
ri………………………… 0.8 kΩ
μ………………………… 4.2
Pout…………………………3.5 W
Recommended Operating Conditions(reference value)
class A1.single tube.fixed bias.
Ua………………… 250 V
-Ug……………………45 V
RL……………………2.5 kΩ
Ia(0)…………………60 mA
Gm……………………5.25 Ma/V
ri……………………0.8 Kω
μ……………………4.2
Pout……………………3.5 W
Dtot……………………5 %
Push-full.class AB1
fixed bias cathode bias
Ua……………300 300 V
-Ug……………62 Rk=780Ω V
RL……………3 5 kΩ
üg(pk)………87 110 V
Ia(0)…………80 80 mA
Ia(max.sig)…140 100 mA
Pout……………15 10 W
Dtot……………2.5 5 %
