NJ7P SQL Tube Database Query

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6AS5
Beam Power Pentode

EIA Base & Outline

EIA Base: 7CVEIA Bulb: 5-3

Substitute Data

Preferred Substitutes ......................... 6CA5
Substitutes ................................... 6CU5
Source ........................................ GE 12/56

Application

Source ........................................ GE 12/56
Miniature type used as output amplifier primarily in automobile and in ac-operated receivers. Requires miniature 7-contact socket. For curves of average plate characteristics, refer to type 35C5.

Mechanical Data

Source ........................................ GE 12/56
Bulb .......................................... T-5 1/2
Base Type ..................................... E7-1 Miniature Button 7-Pin
EIA Outline ................................... 5-3
EIA Base ...................................... 7CV
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any

Electrical Data

Source ........................................ GE 12/56
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.8 A
Maximum Heater-Cathode Voltage
Heater Positive with Respect to Cathode
DC Component ............................ 90 V
Heater Negative with Respect to Cathode
DC Component ............................ 90 V

Direct Interelectrode Capacitances (approx)

Beam Pentode
Source ........................................ GE 12/56
Input ......................................... 12.0 pf
Output ........................................ 6.2 pf
Grid to Plate ................................. 0.6 pf

Maximum Ratings (Design Center Values)

Beam Pentode
Source ........................................ GE 12/56
Plate Voltage ................................. 150 V
Grid No. 2 Voltage ............................ 117 V
Plate Dissipation ............................. 5.5 W
Grid No. 2 Dissipation ........................ 1.0 W
Grid No. 1 Circuit Resistance
Fixed Bias ................................. 100K Ω
Self Bias .................................. 500K Ω
Bulb Temperature (At Hottest Point) ........... 250 °C

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ GE 12/56
Plate Voltage ................................. 150 V
Grid No. 2 Voltage ............................ 110 V
Grid No. 1 Voltage ............................ -8.5 V
Peak Grid No. 1 Voltage........................ 8.5 V
Transconductance .............................. 5600 µMho
Plate Current (Zero Signal) ................... 35 mA
Plate Current (Maximum Signal) ................ 36 mA
Grid No. 2 Current (Zero Signal) .............. 2 mA
Grid No. 2 Current (Maximum Signal) ........... 6.5 mA
Load Resistance ............................... 4.5K Ω
Power Output (approx) ......................... 2.2 W
Total Harmonic Distortion ..................... 10 %

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Fri, 30 Sep 2022 00:16:00 -0700