NJ7P SQL Tube Database Query

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6BA5
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 8DYEIA Bulb: 3-1
Source ........................................ SP 1041

Mechanical Data

Source ........................................ SP 1041
Bulb .......................................... T-3
EIA Outline ................................... 3-1
EIA Base ...................................... 8DY
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ SP 1041
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.15 A
Maximum Heater-Cathode Voltage ................ 90 V

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ SP 1041
Shielded Unshielded
Input ......................................... 3.2 3.4 pf
Output ........................................ 1.6 3.6 pf
Grid to Plate ................................. 0.1 0.065 pf

Maximum Ratings (Design Center Values)

Pentode
Source ........................................ SP 1041
Plate Voltage ................................. 150 V
Grid No. 2 Voltage ............................ 140 V
Plate Dissipation ............................. 0.7 W
Grid No. 2 Dissipation ........................ 0.3 W
Grid No. 1 Circuit Resistance
Self Bias .................................. 1M Ω

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ SP 1041
Plate Voltage ................................. 100 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 270 Ω
Plate Resistance (approx) ..................... 175K Ω
Transconductance .............................. 2150 µMho
Plate Current ................................. 5.5 mA
Grid No. 2 Current ............................ 2.0 mA
Grid No. 1 Voltage for Ib ..................... 10 µa @ -13.5 V

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Thu, 18 Aug 2022 00:00:20 -0700