Ampera
WE418A
Pentode · IHT · 9-pin Magnoval · 1952
“High-Gm frame-grid tetrode. Superb triode-strapped.”
Small-signal pentode for low-noise voltage amplification
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN0%
POWER20%
DRIVE50%
LINEARITY75%
EXECUTIVE SUMMARY
The WE418A is a indirectly-heated pentode from Western Electric, introduced around 1952. Commonly used in driver / power applications. High-Gm frame-grid tetrode. Superb triode-strapped.
HISTORY
Introduced1952ManufacturerWestern ElectricEquivalentsNone direct
Golden AgeSPECIFICATIONS
Heater Voltage20V
Heater Current0.3A
Max Plate Voltage200V
Max Power8W
Sensitivity21 mA/V
Gain Factor—
Internal Impedance—
Pinout9-pin Magnoval
Era1952
RarityCollector
Input Capacitance4.2pF
Miller Capacitance0.06pF
Output Capacitance2.5pF
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.