Stereo Vacuum Tubes PSVANE Vacuum Tubes HIFI 2A3C replace 2A3 2A3B
for AMP DIY
2A3C
HIFI series: classic style, exquisite craft, perfect and stable
sound performance, the world’s largest HIFI series seller, best
choice for you.
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 %
| 2A3 tube: |
| Psvane HIFI 2A3C |  | Psvane T-II Classic 2A3-TⅡ |  |
| Psvane T 2A3-T |  | Psvane T-II Premium 2A3-TⅡ |  |
| Psvane WR2A3 |  | | |
| Shuguang Treasure 2A3C-Z |  | Shuguang Natural T 2A3C-T |  |
| Shuguang HIFI 2A3C |  | Shuguang HIFI 2A3B |  |
