Electron Stereo Vacuum Tubes NeW PSVANE HIFI 2A3C Vacuum Electron Tube 2A3 AUDIO AMP DIY

Electron Stereo Vacuum Tubes NeW PSVANE HIFI 2A3C Vacuum Electron Tube 2A3 AUDIO AMP DIY

2A3C
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2A3C is direct-heated cathode middle- power double triode, and it is used as class A1, AB1 amplification.

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 %
Class AB1, push-full (fixed 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 %