EL34PH Vacuum Tube Precision Matching Amplifier(4 pcs)

Preamps
Hot wire heating
Uh......................6.3V
IH.............................1.5 A
Extreme Rating
Anode voltage..................................800V
Second gate voltage...................... 500 V
First gate voltage................................-100 V
Anode power dissipation ................................ 25 W
Second gate power dissipation..................8W
Cathode current..................................150 mA
First gate resistor
Self-bias..................0.7 M
Fixed bias voltage................................0.5M
Hot wire cathode voltage....................±100V
Glass cabinet temperature..................................250
Interelectrode capacitance
Input capacitance................................15.2PF
Output Capacitance .................................8.4 pF
Inter-circuit capacitance..................................1.1 PF
First grid hot line capacitance........1.0 PF
Capacitance between hot wire cathodes..................................10PF
Static parameters
Ua........................250V
Ug2........................265V
Ug3.............................0V
-Ug1........................13.5V
Ia................................................100 mA
Gm.................................11 mA/V
Miles................................. 15 k
g1-g2..................11