Shuguang 2A3B / VT95 - Matched Pair | HiFi Triodes, Transmitting Tubes

2A3B is compatible with 2A3 triode. It is direct heating cathode and low power consumption. Two triodes can be used in class A and AB amplification. The output power of single tube can reach 6.5W. High evacuated tube, it achieve high performance tube in audio frequency.

 

FEATURES

l          New improved filament hooking design

l          Plate of high carbon alloy

l          Using high transparency of T16 as glass envelope

 

 

 

SPECIFICATION

Filament Heating

Uf ……………………… 2.5 V

If…………………………2.5 A

 

Maximum Ratings

Plate voltage…………………………300 V

Plate power dissipation…………….…15 W

Grid resistance

For self-biasing voltage…………………0.5 M

For fix biasing voltage…………………0.05 M

Capacitances

Input capacitance……………… 7.5pF

Output capacitance……………16.5pF

Muller capacitance…………..……5pF

 

DC Parameters

Ua………………………… 300V

-Ug………………………… 45V

Ia………………………… 60mA

Gm………………………… 5.25mA/V

ri………………………… 0.8k

u………………………… 4.2

Pout…………………………3.5W

 

Recommended Operating Conditions (suggested value)Single tube class A amplifying (fix biasing voltage)

Ua………………… 250V

-Ug…………………45V

RL…………………2.5 k

Ia(0)…………………60mA

Gm………………5.25 Ma/V

ri……………………0.8 K

u……………………4.2

Pout…………………3.5 W

Dtot……………………5 %

 

Driving class AB amplifier

               fixed biasing self-biasing

Ua……………300         300 V

-Ug……………62V      Rk=780

RL……………3            5 k

üg(pk)………87     110 V

Ia(0)…………80    80 mA

Ia(max.sig)…140    100 mA

Pout……………15    10 W

Dtot……………2.5    5 %