←4Y75R

4Y75R

Pentode · IHT · Octal · 1960

Power pentode delivering up to 75W in pentode, UL, or triode mode

TRANSCONDUCTANCE8.5mA/V

Cgk18.0pF

Cgp1.2pF

Cpk15.00pF

GAIN0%

POWER100%

DRIVE50%

LINEARITY75%

HEATER4V / 2.6A

MAX PLATE1000V / 75W

BASEoctal

EXECUTIVE SUMMARY

The 4Y75R is a indirectly-heated pentode from Mullard, introduced around 1960. Commonly used in output power applications.

APPLICATIONS

Power output

Generic pentode output power stage

• PA/public address

VS EL156

HISTORY

Introduced1960ManufacturerMullardEquivalentsEL156

Late Production

SPECIFICATIONS

Heater Voltage4V

Heater Current2.6A

Max Plate Voltage1000V

Max Power75W

Sensitivity8.5 mA/V

Gain Factor—

Internal Impedance—

PinoutOctal

Era1960

RarityRare

Input Capacitance18pF

Miller Capacitance1.2pF

Output Capacitance15pF

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

SIMILAR PENTODES