2A3C Shuguang Gold pin tube

Brand new 100% with certification
Gold pins
Made in China by Shuguang Factory

Triode: 2A3C (2A3)Compatible with: 2A3B
DESCRIPTION
2A3C is compatible with 2A3 and 2A3B. Direct heating cathode and low power consumption. Two triodes can be used for class A and AB amplification.

FEATURES
l          Gold-plated pins, ceramic tube socket
l          Using high transparency tube envelop of 300B
l          New design of filament hooking
l          High evacuated tube, make it more stable and reliable.
l          Fix three layer mica film provides firm inner structure for anti-vibration and reduces microphone effect.
 
All of our vacuum tubes are directly come from the Shuguang Electron Group Co., Ltd. Hunan China; it is 100% factory price. No agent, distributor, or any mediators, etc. in between the buying process. All vacuum tubes are passed the strict quantity test of factory of Shuguang. Any tubes are come with a qualified certificate of the SHUGUANG factory.

SPECIFICATION
Filament Heating
Uf 2.5 V
If2.5 A
Maximum Ratings
Plate voltage300 V
Plate dissipation power15 W
Grid resistance
When it is self-biasing voltage0.5 M
When it is fix biasing voltage0.05 M
Capacitances
Input capacitance 7.5 PF
Output capacitance16.5 PF
Muller capacitance5.5 PF
DC Parameters
Ua 300 V
-Ug 45 V
Ia 60 mA
Gm 5.25 mA/V
ri 0.8 k
u 4.2
Pout 3.5 W
Recommended Operating Condition (reference value)
Single tube for class A amplifying(fix biasing voltage)
Ua 250 V
-Ug 45 V
RL 2.5 k
Ia(0) 60 mA
Gm 5.25 Ma/V
ri 0.8 K
u 4.2
Pout 3.5 W
Dtot 5 %
For class AB amplifier fixed biasing   self-biasing
Ua 300   300 V
-Ug..62         Rk=780  V
RL3      5 k
g(pk) 87      110 V
Ia(0) 80     80 mA
Ia(max.sig) 140  100mA
Pout 15   10 W
Dtot 2.5   5 %      

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