←EL91

EL91

Pentode · IHT · 7-pin Miniature · 1950

“Small audio output.”

Small-signal pentode for low-noise voltage amplification

TRANSCONDUCTANCE6.0mA/V

Cgk5.5pF

Cgp0.1pF

Cpk3.50pF

GAIN0%

POWER10%

DRIVE50%

LINEARITY75%

HEATER6.3V / 0.2A

MAX PLATE250V / 4W

BASEminiature-7

EXECUTIVE SUMMARY

The EL91 is a indirectly-heated pentode from Philips, introduced around 1950. Commonly used in power applications. Small audio output.

APPLICATIONS

Voltage amplifier

Generic pentode power stage

HISTORY

Introduced1950ManufacturerPhilipsEquivalents6AM5

Golden Age

SPECIFICATIONS

Heater Voltage6.3V

Heater Current0.2A

Max Plate Voltage250V

Max Power4W

Sensitivity6 mA/V

Gain Factor—

Internal Impedance—

Pinout7-pin Miniature

Era1950

RarityModerate

Input Capacitance5.5pF

Miller Capacitance0.15pF

Output Capacitance3.5pF

EL91 Datasheet

Frank's Electron Tube Pages · PDF

SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.

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