75TL
Triode · DHT · UX-4 · 1936
“Building block of the 304TL. Low mu power.”
Power triode delivering 75W for push-pull and SET designs
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
GAIN12%
POWER100%
DRIVE95%
LINEARITY94%
EXECUTIVE SUMMARY
The 75TL is a directly-heated triode from Eimac, introduced around 1936. It provides a gain factor (μ) of 12 with 5000Ω plate resistance. Commonly used in transmitting (set) applications. Building block of the 304TL. Low mu power.
APPLICATIONS
SET outputPush-pull output
Generic triode transmitting (set) stage
• PA/public address
HISTORY
Introduced1936ManufacturerEimacEquivalentsNone standard
Pre-WarSPECIFICATIONS
Heater Voltage5V
Heater Current6.25A
Max Plate Voltage3000V
Max Power75W
Sensitivity2.5 mA/V
Gain Factor12
Internal Impedance5.0kΩ
PinoutUX-4
Era1936
RarityRare
SPICE model not yet available. Loadline calculator requires calibrated Koren parameters.