2A3 Electron Tube Replaces 2A3C 2A3B Vacuum Tube Precision Matching(2 pcs)

Preamps
Maximum Ratings
Ua........................ 300V
Pa............................15W
A
With cathode bias......... 0.5 M
Fixed bias... ...
Direct interelectrode capacitance
Input ................................. 7.5 PF
Output ................................. 16.5 PF
Grid spacing................5.5 PF
Static parameters
Ua........................ 300V
- Uh... 45V
Ia...................................................... 60 mA
General Purpose ...................... 5.25 mA/V
ri........................0.8k
……………………4.2
Pouting................................... 3.5 W
Recommended operating conditions
(reference value)
Class A1, single tube (fixed bias)
Voltage source.................250 V
-Ug........................ 45V
Reconnection voltage..................2.5kV
Ia(0) ................................. 60 mA
GM......................5.25 mA/V
ri........................0.8K
......................... 4.2
Pouting........................ 3.5 W
Total dry weight ................................. 5 %
Category AB1
Push full (fixed deviation)
Voltage source...............300300V
-Ug............ 62 Rk=780 V
RL...............3 5K
üg (peak)............ 87 110 V
Current Ia(0)............80 80 mA
Ia (maximum signal) ... 140 100 mA
Pouting...............15 10 W
Total...............2.55%