Psvane / T Series / 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 biascathode 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 %