Shuguang Vacuum Tube 845

 

Emitter Tube: 845B (845)Compatible with: UY-845

 

DESCRIPTION

Direct heating, thorium cathode made by Toshiba, high gain triode 845B can be used in class A and AB power amplification.

 

FEATURES

·High purity of titanized graphite plate and maximum plate power dissipation can reach 100W 

 

 

 

SPECIFICATION Filament Heating Uf ………………………10V If…………………………2.5A Maximum Ratings Plate voltage……………………….1250 V Plate current (max. amplitude)..……120 mA Plate power dissipation..……………75 W Input power (max. amplitude……….150W Capacitance Input capacitance……………………6pF Output capacitance…………………4.5pF Muller capacitance…………………14.5pF DC Parameters Ua…………………………1250 V -Ug………………………200 V Ia…………………………80 mA Gm………………………..3mA/V ri…………………………..1.7k? u(when Ia=20mA) ………5 RL…………………………3.4 k? Pout………………………15W Recommended Operating Condition (suggested value) Ua………………1000 1000 1250 V -Ug …………………145 155 209 V RL………………………6 9 16 k? Ia………………………90 65 52 Ma üg(pk)………………- 110 148 V ri………………………1.7 1.9 2.1 k? Gm……………………3.1   -    -  mA/V Pout……………………24 21 24 W Dtot……………………5    -    - % Class AB amplifying Ua……………………800 1000 1000 1250 V -Ug…………………125 170 175 225 V RL…………………4.5 4.6 4.6 6.6 k? Ia……………………80 70 40 40 mA üg(pk)………………177 240 - - V Ia(max.sig)……………170 230 230 240 mA Pout………………………40 75 75 115 W