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EF86 Dataheets PDF



Part Number EF86
Manufacturers Tube Amp Doctor
Logo Tube Amp Doctor
Description Low Noise AF Pentode
Datasheet EF86 DatasheetEF86 Datasheet (PDF)

TECHNICAL DATA TAD EF86 / 6267 Premium Select Low Noise AF Pentode The TAD™ EF86 / 6267: is a glass envelope miniature pentode for highquality small signal amplification in sensitive input stages The TAD™ EF86 / 6267 is likewise suitable for many High-End-Audio devices and microphone preamps as well as the famous VOX AC amplifier line from the early 60´s. The TAD™ EF86 / 6267 is a faithful reproduction in shape and tone of yesteryears EF86´s. Characteristics of a bogey tube: Electrical Heater.

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TECHNICAL DATA TAD EF86 / 6267 Premium Select Low Noise AF Pentode The TAD™ EF86 / 6267: is a glass envelope miniature pentode for highquality small signal amplification in sensitive input stages The TAD™ EF86 / 6267 is likewise suitable for many High-End-Audio devices and microphone preamps as well as the famous VOX AC amplifier line from the early 60´s. The TAD™ EF86 / 6267 is a faithful reproduction in shape and tone of yesteryears EF86´s. Characteristics of a bogey tube: Electrical Heater Voltage (AC or DC) in Volts Heater Current in mA Heating Cathode-to-heater potential, max. Cathode positive: Cathode negative: Direct interelectrode capacitances, max.*** Grid 1 to all except plate Grid 1 to plate Plate to all except Grid 1 Grid 1 to heater Mechanical Operating Position Base Dimensions: Height Seated height Diameter Cooling Approximate net weight ***Without external shielding, nominal values AF Power Amplifier Maximum ratings DC plate voltage Grid 2 voltage Positive DC Grid Voltage Negative DC Grid Voltage Plate dissipation Grid 2 Dissipation Bulb temperature (surface hottest point) Cathode Current 6.3+/-0.5 200+/- 10% Indirect 100 V 50V 3.8 pF 0.05 pF 5.1 pF 0.0025 pF Any E9-1, Small Button 9 Pin 55.6 mm 49.2 mm 22.2 mm conventional 15 g 300 V 200 V 0V -100 V 1.0 W 0.2 W 170°C 6 mA RT-EF86/6267 Pentode Connection B+ / V RA / kΩ RG2 / kΩ RK / kΩ VOut / VRMS VOut / VIN THD / % IA / mA 200 100 390 1,00 40,3 100,8 4,0 1,5 250 100 390 1,00 43,7 109,3 2,8 1,9 300 100 390 1,00 46,4 116,0 2,3 2,4 350 100 390 1,00 48,6 121,5 2,0 2,8 400 100 390 1,00 50,6 126,5 1,8 3,3 200 220 1000 2,20 50,3 125,8 8,0 0,7 250 220 1000 2,20 57,0 142,5 6,5 0,9 300 220 1000 2,20 61,4 153,5 5,5 1,1 350 220 1000 2,20 65,3 163,3 5,0 1,3 400 220 1000 2,20 68,4 171,0 4,5 1,5 RT-EF86/6267 Triode Connection (G2 to Anode, G3 to Cathode) B+ / V RA / kΩ 200 100 250 100 300 100 350 100 400 100 RK / kΩ VOut / VRMS VOut / VIN THD / % IA / mA 2,20 10,9 27,3 0,83 1,0 2,20 11,0 27,5 0,64 1,2 2,20 11,2 28,0 0,52 1,5 2,20 11,3 28,3 0,44 1,7 2,20 11,4 28,5 0,41 2,0 200 220 250 220 300 220 350 220 400 220 3,90 3,90 3,90 3,90 3,90 Test arrangement: 11,6 29,0 1,00 0,5 11,7 29,3 0,80 0,6 11,8 29,5 0,60 0,8 11,9 29,8 0,50 0,9 12,0 30,0 0,40 1,0 Bottom View Octal Base Connections Outline View Version 1.0 17.10.2012 Page 1 .


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