NJ7P SQL Tube Database Query

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1B5
Twin Diode - Medium-Mu Triode

EIA Base & Outline

Application

Source ........................................ RCA RC-13 - 1937
Glass type used as combined detector, amplifier, and avc tube in battery-operated receivers. Requires six-contact socket.

Mechanical Data

Source ........................................ RCA RC-13 - 1937
Bulb .......................................... ST-12
Base Type ..................................... Small 6-Pin
EIA Outline ................................... 12-5
EIA Base ...................................... 6M
Mounting Position ............................. Vertical

Electrical Data

Source ........................................ RCA RC-13 - 1937
Filament Voltage .............................. 2.0 DC V
Filament Current .............................. 0.06 A

Direct Interelectrode Capacitances (approx)

Triode
Source ........................................ RCA RC-13 - 1937
Input ......................................... 1.6 pf
Output ........................................ 1.9 pf
Grid to Plate ................................. 3.6 pf

Maximum Ratings (Design Center Values)

Triode
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V
Grid No. 3 Voltage ............................ V
Grid No. 2 Supply Voltage ..................... V
Grid No. 2 Voltage ............................ V
Negative Grid No. 1 Voltage ................... V
Positive Grid No. 1 Voltage ................... V
Plate Input ................................... W
Plate Dissipation ............................. W
Grid No. 2 Dissipation ........................ W
Cathode Current ............................... mA
Grid No. 1 Circuit Resistance
Fixed Bias ................................. Ω
Self Bias .................................. Ω
Bulb Temperature (At Hottest Point) ........... °C

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-13 - 1937
Plate Voltage ................................. 135 V
Grid No. 1 Voltage ............................ -3 V
Amplification Factor .......................... 20
Plate Resistance (approx) ..................... 35K Ω
Transconductance .............................. 575 µ
Plate Current ................................. 0.8 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

Sat, 02 Jul 2022 19:37:16 -0700