NJ7P SQL Tube Database Query

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6028
Sharp-Cutoff Pentode

EIA Base & Outline

Mechanical Data

EIA Outline ................................... 5-1
EIA Base ...................................... 7BD

Electrical Data

Heater Voltage ................................ 20.0 V
Heater Current ................................ 0.05 A

Direct Interelectrode Capacitances (approx)

Pentode
Input ......................................... 4.0 pf
Output ........................................ 2.8 pf
Grid to Plate ................................. 0.02 pf

Maximum Ratings (Design Center Values)

Pentode
Plate Voltage ................................. 165 V
Plate Dissipation ............................. 0.8 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 120 V
Grid No. 2 Voltage ............................ 120 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 180 Ω
Plate Resistance (approx) ..................... 300K Ω
Transconductance .............................. 5000 µ
Plate Current ................................. 7.5 mA
Grid No. 2 Current ............................ 2.5 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 23:34:07 -0700