ECH81 (=6I1P-EB) Siemens West Germany - nos tube

ECH81 (=6I1P-EB) Siemens West Germany - nos tube

Triode-heptode. These were made in the late 1960s by Siemens & Halske, Munich.

Key specifications

• Tube model: ech81
• Close or identical: 6AJ8 , 6C12 , CV2128 , X719
• Different filament voltage: UCH81
• Base / socket: B9A (Noval (9-pin))
• Heater: 6.3 V / 0.3 A
• Max anode (plate) voltage (Va max): 300;250 V
• Max plate dissipation (Pa max): 1.7;0.8 W
• Max heater-cathode voltage (Vhk max): 100 V
• Max cathode current (Ik max): 12.5 avg;6.5 avg mA

Links & datasheets

• Valve Museum / r-type exhibit
• Valve Museum / r-type exhibit
• Radiomuseum tube page
• R-type PDF datasheet

Technical data and equivalence information are compiled from public sources and may contain errors. Always verify suitability and ratings from original manufacturer datasheets before use.

NOS tubes are stored in our external warehouse. Most NOS tubes are therefore not available for immediate pickup from our physical shops. Please allow an additional 2–5 business days for delivery.