NJ7P SQL Tube Database Query

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12BR3
Half-Wave Vacuum Rectifier

EIA Base & Outline

Substitute Data

Substitutes ................................... 12AF3 12BY3
Source ........................................ RCA RC-29 - 1975

Application

Source ........................................ RCA RC-29 - 1975
Miniature type used as a damper tube in horizontal-deflection circuits of television receivers. Requires miniature 9-contact socket. Socket terminals 1, 2, 3, 6, 7, and 8 should not be used as tie points.

Source ........................................ RCA RC-29 - 1975
It is especially important that this tube, like other power handling tubes, be adequately ventilated.

Mechanical Data

Source ........................................ RCA RC-29 - 1975
Bulb .......................................... T-6 1/2
Base Type ..................................... Miniature Button 9-Pin
Maximum Overall Height ........................ 3.500 In.
Maximum Seated Height ......................... 3.250 In.
Maximum Diameter .............................. 0.875 In.
EIA Base ...................................... 9CB

Electrical Data

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

Source ........................................ RCA RC-29 - 1975
For other characteristics and typical operation, see 6AF3

If you are uncertain about the EIA designator for a particular tube please use the "Index" button to list all the tubes in the database. You can click on the designator for the closest tube.

(c) 1994-2021 by William A. Beech, NJ7P

Sun, 05 Feb 2023 20:57:49 -0700