45B-EmissionLabs
Triode · DHT · UX-4 · 2008
“Enhanced Type 45.”
High-power directly-heated triode for single-ended amplification
Datasheet ↗SPICE
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
GAIN4%
POWER55%
DRIVE99%
LINEARITY95%
TYPICAL OPERATING POINT
EXECUTIVE SUMMARY
The 45B-EmissionLabs is a directly-heated triode from Emission Labs, introduced around 2008. It provides a gain factor (μ) of 3.5 with 1400Ω plate resistance. Commonly used in power (set) applications. Enhanced Type 45.
APPLICATIONS
SET outputPush-pull outputHeadphone output
Generic triode power (set) stage
• Hi-Fi stereo• Headphone amp
VS 45
HISTORY
Introduced2008ManufacturerEmission LabsEquivalents45
ModernSPECIFICATIONS
Heater Voltage2.5V
Heater Current2.5A
Max Plate Voltage450V
Max Power22W
Sensitivity2.5 mA/V
Gain Factor3.5
Internal Impedance1.4kΩ
PinoutUX-4
Era2008
RarityModerate