Note: Please do not link down into my pages. I change this directory structure often and your links will not work correctly.
![]() | ![]() |
Substitutes ................................... 12AF6 12BL6 12CY6
Source ........................................ Sylvania - 1959
Source ........................................ Sylvania - 1959
Miniature type used as a rf or if amplifier. This tube is designed to operate where heater and plate voltage ar supplied directly from a 12 volt battery. Requires miniature 7-contact socket.
Source ........................................ Sylvania - 1959
Bulb .......................................... T-5 1/2
Base Type ..................................... Miniature Button 7-Pin
EIA Outline ................................... 5-2
EIA Base ...................................... 7BK
Cathode ....................................... Coated Unipotential
Mounting Position ............................. Any
Source ........................................ Sylvania - 1959
Heater Voltage ................................ 10-16 V
Heater Current ................................ 0.15 A
Pentode
Source ........................................ Sylvania - 1959
Input ......................................... 4.3 pf
Output ........................................ 5 pf
Grid to Plate ................................. 0.005 pf
Pentode
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 30 V
Grid No. 2 Voltage ............................ 30 V
Class A Amplifier
Source ........................................ Sylvania - 1959
Plate Voltage ................................. 12.6 V
Grid No. 2 Voltage ............................ 12.6 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 500K Ω
Transconductance .............................. 730 µ
Plate Current ................................. 0.55 mA
Grid No. 2 Current ............................ 0.2 mA
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
Wed, 29 Mar 2023 00:45:06 -0700