NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

12AZ7
High-Mu Twin Triode

EIA Base & Outline

EIA Base: 9AEIA Bulb: 6-2

Substitute Data

Preferred Substitutes ......................... 12AT7
Substitutes ................................... 12AU7
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used in direct-coupled cathode-drive rf amplifier circuits of vhf tv tuners. Requires miniature 9-contact socket.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
Base Type ..................................... Small Button 9-Pin
EIA Outline ................................... 6-2
EIA Base ...................................... 9A
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 0.45/0.225 A

Direct Interelectrode Capacitances (approx)

Each Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 3.1 pf
Output ........................................ 0.45 pf
Grid to Plate ................................. 1.9 pf

Maximum Ratings (Design Center Values)

Each Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 300 V
Plate Dissipation ............................. 2.5 W

Source ........................................ RCA RC-29 - 1975
For other characteristics and typical operation, see 12AZ7A

A horizontal ribbon.

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A horizontal ribbon.

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Mon, 28 Nov 2022 01:07:46 -0700