NJ7P SQL Tube Database Query

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12AX7A
High-Mu Twin Triode

EIA Base & Outline

EIA Base: 9AEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 12DF7 12DM7
Substitutes ................................... 12AD7
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as phase inverter or amplifier in ac/dc radio equipment and in many diversified applications such a multivibrators or oscillators in industrial control devices.

Source ........................................ RCA RC-29 - 1975
Requires noval 9-contact socket. For characteristics and curves, refer to 6AV6.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
EIA Outline ................................... 6-2
EIA Base ...................................... 9A

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 0.3/0.15 A

Direct Interelectrode Capacitances (approx)

Each Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 1.6 pf
Output ........................................ 0.46 pf
Grid to Plate ................................. 1.7 pf

Each Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 1.6 pf
Output ........................................ 0.34 pf
Grid to Plate ................................. 1.7 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1.2 W

Each Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 330 V
Plate Dissipation ............................. 1.2 W

Source ........................................ RCA RC-29 - 1975
For other characteristics and typical operation, see 6AV6

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Sat, 25 Jun 2022 10:29:24 -0700