NJ7P SQL Tube Database Query

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9001
Sharp-Cutoff Pentode

EIA Base & Outline

EIA Base: 7BDEIA Bulb: 5-1
Source ........................................ ARRL HB - 1964

Mechanical Data

Source ........................................ ARRL HB - 1964
Bulb .......................................... T-5 1/2
EIA Outline ................................... 5-1
EIA Base ...................................... 7BD 7PM?

Electrical Data

Source ........................................ ARRL HB - 1964
Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Pentode
Source ........................................ ARRL HB - 1964
Input ......................................... 3.6 pf
Output ........................................ 3 pf
Grid to Plate ................................. 0.01 pf

Characteristics and Typical Operation

Class A Amplifier
Source ........................................ ARRL HB - 1964
Plate Voltage ................................. 250 V
Grid No. 2 Voltage ............................ 100 V
Grid No. 1 Voltage ............................ -3 V
Plate Resistance (approx) ..................... 1M Ω
Transconductance .............................. 1400 µMho
Plate Current ................................. 2 mA
Grid No. 2 Current ............................ 0.7 mA

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Thu, 18 Aug 2022 01:38:47 -0700