NJ7P SQL Tube Database Query

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6897
High-Mu Triode

EIA Base & Outline

EIA Base: 2C39B
Source ........................................ GE1

Application

The 6897 is a metal-and-ceramic, high-mu triode designed for use as a grounded-grid oscillator or amplifier at frequencies as high as 2500 MHz.

Features of the 6897 include planar electrode construction, high plate dissipation capability, excellent electrode isolation, low radio-frequency losses, high transconductance, and low interelectrode capoacitances.

Mechanical Data

EIA Base ...................................... 2C39B

Electrical Data

Heater Voltage ................................ 6.3 V
Heater Current ................................ 1.03 A

Direct Interelectrode Capacitances (approx)

Triode
Input ......................................... 6.5 pf
Output ........................................ 0.023 pf
Grid to Plate ................................. 2.01 pf

Maximum Ratings (Design Center Values)

Triode
Plate Voltage ................................. 1000 V
Plate Dissipation ............................. 100 W

Characteristics and Typical Operation

Class C Oscillator/Amplifier (500 MHz)
Plate Voltage ................................. 900 V
Grid No. 1 Voltage ............................ -40 V
Grid No. 1 Current ............................ 30 mA
Plate Current ................................. 90 mA
Power Output (approx) ......................... 40 W

Class C Oscillator/Amplifier (2500 MHz)
Plate Voltage ................................. 900 V
Grid No. 1 Voltage ............................ 22 V
Grid No. 1 Current ............................ 27 mA
Plate Current ................................. 90 mA
Power Output (approx) ......................... 17 W

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Mon, 27 Jun 2022 08:23:42 -0700