WE310A Vacuum Tube Precision Matching Amplifier(2 pcs)

Preamps
WE310A
310 is the best partner for 300B as a driver tube
2.2.2 parameters - rated values/units
2.2.1 Interelectrode capacitance
2.2.1.1 Input Capacitor 15.5 PF
2.2.1.2 Output Capacitor 8.4 PF
2.2.1.3 Inter-circuit capacitance 1.5 PF
2.2.2 Typical operating parameters
2.2.2.1 Hot wire voltage 10 V
2.2.2.2 Hot wire current 0.36A
2.2.2.3 Anode voltage 135V
2.2.2.4 Curtain door voltage 135 V
2.2.2.5 Control gate voltage -3V
2.2.2.6 Suppressing gate voltage to 0 V
2.2.2.7 Anode current 5.6 mA
2.2.2.8 Curtain door current 1.5 mA
2.2.2.9 First gate reverse current 4 A
2.2.2.10 Transconductance 0.75 mA/V
2.4 Parameters - Absolute Maximum Ratings Minimum Maximum
2.4.1 Hot wire voltage 9 11 V
2.4.2 Anode voltage 300V
2.4.3 Curtain grid voltage 300V
2.4.4 Anode power dissipation 10 W
2.4.5 Curtain grid power dissipation 4W
2.4.6 Voltage between hot wire and cathode ±200V
2.4.7 Control grid circuit resistance 700K