NJ7P SQL Tube Database Query

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12CS5
Beam Power Pentode

EIA Base & Outline

Substitute Data

Preferred Substitutes ......................... 12DB5
Substitutes ................................... 12DW5 12CM6

Mechanical Data

EIA Outline ................................... 6-3
EIA Base ...................................... 9GR

Electrical Data

Heater Voltage ................................ 12.6 V
Heater Current ................................ 0.6 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 15 pf
Output ........................................ 9 pf
Grid to Plate ................................. 0.5 pf

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 200 V
Grid No. 2 Voltage ............................ 125 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 28K Ω
Transconductance .............................. 8000 µ
Plate Current ................................. 47 mA
Grid No. 2 Current ............................ 2.2 mA
Load Resistance ............................... 4K Ω
Power Output (approx) ......................... 3.8 W

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

Sat, 25 Mar 2023 19:32:34 -0700