Subminiature dual triode of advanced mechanical strength, designed for operation as a low-frequency voltage amplifier.
Cathode: indirectly heated, oxide-coated.
Operating position: any.
Envelope: miniature glass.
Service life: at least 750 h.
Weight: less than 4 g.
General Performance Characteristics:
Nominal Values:
• Heater voltage, V 6.3 ±0.6
• Heater current, mA 370 ±40
• Anode voltage, V 200
• Anode circuit current, mA 3.3 ±1.0
• Mutual conductance, мА/V 4 ±1.0
• Cathode circuit resistance, Ohm 300
• Input resistance, kOhm 32
• Reverse grid current, µA <0.2
• Amplification factor 70 ±16
Critical Values:
• Maximum anode voltage, V 250
• Maximum anode voltage when the tube is cutoff, V 350
• Negative grid voltage, V -50
• Maximum cathode circuit current, mA 10
• Maximum anode dissipation, W 0.9
• Maximum heater-cathode voltage, V 120
