NJ7P SQL Tube Database Query

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5897
Medium-Mu Triode

EIA Base & Outline

Application

Subminiature type used as amplifier and oscillator at frequencies up to 500 MHz in subminiature equipment. Requires either a subminiature socket or direct soldering of the wires from the tube to circuit components.

Mechanical Data

EIA Outline ................................... 3-1
EIA Base ...................................... 8DK

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 0.15 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 2.2 pf
Output ........................................ 0.7 pf
Grid to Plate ................................. 1.4 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 165 V
Plate Dissipation ............................. 3.3 W

Characteristics and Typical Operation

Class A Amplifier
Plate Voltage ................................. 100 V
Grid No. 1 Voltage Derived from
Cathode Bias Resistor ...................... 150 Ω
Amplification Factor .......................... 27
Transconductance .............................. 5800 µ
Plate Current ................................. 8.5 mA

Class C Oscillator/Amplifier
Plate Voltage ................................. 150 V
Plate Current ................................. 20 mA
Power Output (approx) ......................... 0.9 W

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 07:03:54 -0700