Shuguang Treasure 2A3-Z Vacuum tubes Best Matched Pair 2A3C-Z

 

Shuguang Treasure 2A3C-Z is a directly-heated cathode power dual triode tubes. Work on Class A1, AB1 amplifier.


Feature:
Using "High Polymer Compound Carbon (HPCC)" technology;
Using "Super Alloy " technology;
Improve the vacuum extraction technology, effectively improve the vacuum;
Gold gate, gold-plated pin, white porcelain seat;
Using new materials and processes
2A3C-Z and 2A3 are similar, can be used interchangeably.


Specification:

Filament heating
Uf ......... 2.5 V
If ......... 2.5 A

Limit rating
Anode voltage ......... 300 V
Anode dissipation power ......... 15 W
Gate resistance
Self-bias ......... 0.5 MΩ
Fixed bias when ......... 0.05 MΩ

Pole capacitance
Input Capacitance ......... 7.5 PF
Output Capacitance ......... 16.5 PF
Cross-circuit capacitance ......... 5.5 PF

Static parameters
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 working status (reference value)
Single tube Class A1 amplifier (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-pull Class AB1 amplifier

Fixed bias self-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%