NJ7P SQL Tube Database Query

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958
Medium-Mu Triode

EIA Base & Outline

EIA Base: 5BDEIA Bulb: 4-1
Source ........................................ ARRL HB -1947

Mechanical Data

EIA Outline ................................... 4-1
EIA Base ...................................... 5BD

Electrical Data

Filament Voltage .............................. 1.25 DC V
Filament Current .............................. 0.1 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 0.6 pf
Output ........................................ 0.8 pf
Grid to Plate ................................. 2.6 pf

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 135 V
Grid No. 1 Voltage ............................ -7.5 V
Amplification Factor .......................... 12
Plate Resistance (approx) ..................... 10K Ω
Transconductance .............................. 1200 µMho
Plate Current ................................. 3 mA

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Fri, 19 Aug 2022 22:03:12 -0700