NJ7P SQL Tube Database Query

A horizontal ribbon.

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A horizontal ribbon.

12B4A
Low-Mu Triode

EIA Base & Outline

EIA Base: 9AGEIA Bulb: 6-3
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as vertical-deflection amplifier in tv receivers. 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 ................................... 6-3
EIA Base ...................................... 9AG
Mounting Position ............................. Any

Electrical Data

Source ........................................ RCA RC-29 - 1975
Heater Voltage ................................ 6.3/12.6 V
Heater Current ................................ 0.6/0.3 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-29 - 1975
Input ......................................... 5 pf
Output ........................................ 1.5 pf
Grid to Plate ................................. 4.8 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 550 V
Plate Dissipation ............................. 5.5 W

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-29 - 1975
Plate Voltage ................................. 150 V
Grid No. 1 Voltage ............................ -17.5 V
Amplification Factor .......................... 6.5
Plate Resistance (approx) ..................... 1.03K Ω
Transconductance .............................. 6300 µMho
Plate Current ................................. 34 mA

A horizontal ribbon.

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A horizontal ribbon.

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Tue, 04 Oct 2022 15:52:51 -0700