NJ7P SQL Tube Database Query

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1LD5
Diode - Sharp-Cutoff Pentode

EIA Base & Outline

Application

Source ........................................ RCA RC-15 - 1947
Glass lock-in type used as combined detector and af voltage amplifier in battery-operated receivers. Requires lock-in 8-contact socket.

Mechanical Data

Source ........................................ RCA RC-15 - 1947
Bulb .......................................... T-9
Base Type ..................................... Lock-In 8-Pin
EIA Outline ................................... 9-30
EIA Base ...................................... 6AX

Electrical Data

Source ........................................ RCA RC-15 - 1947
Filament Voltage .............................. 1.4 DC V
Filament Current .............................. 0.05 A

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ RCA RC-15 - 1947
Plate Voltage ................................. 90 V
Grid No. 2 Voltage ............................ 45 V
Grid No. 1 Voltage ............................ 0 V
Plate Resistance (approx) ..................... 750K Ω
Transconductance .............................. 575 µ
Plate Current ................................. 0.6 mA
Grid No. 2 Current ............................ 0.1 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 05:37:37 -0700