6J8 tube 4pcs in lotApproximate Analogue: ~ 6SJ7
6J8 Vacuum tube Quad for AMP
HF PENTODE NOS Same Date 1979's
What is 6J8 HF PENTODE tube?- 6J8 tube is designed to amplify high frequency voltage.
- It used in the cascades UHF and Ombudsman as a grid detector in the receiving and measuring apparatus.
- The tube works in any position.
- Manufactured in metal design.
- Service life at least 500 hours
• Rated electrical data
• Filament voltage, ...... 6,3
• The voltage on the anode, ...... 250
• The voltage on the second grid In ...... 100
• The voltage on the third grid ...... 0
• The bias voltage on the first grid, ...... -3
• Filament current, mA ...... 300 ±25
• The current in the anode circuit, mA ...... 3 ±1
• The current in the circuit of the second grid, mA ...... 0,8 ±0,4
• Slope, mA/V ...... A 1.65 ±0,35
Maximum permissible electrical values
• The maximum stress intensity, In ...... 6,9
• The smallest filament voltage, ...... 5,7
• The highest voltage at the anode, ...... 330
• The highest voltage of the PA second grid, ...... 140
• The highest power dissipated at the anode, W ...... 2,8
• The highest power dissipation in the second grid, W ...... 0,7
• The highest DC voltage between the cathode and the heater, ...... 100
• The highest leakage current between the cathode and heater, ua ...... 20
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