Ampera
6AS7G
Triode · IHT · Octal · 1945
“Classic OTL output.”
High-power directly-heated triode for single-ended amplification
Datasheet ↗SPICE
GAIN FACTOR0
PLATE IMPEDANCE0Ω
TRANSCONDUCTANCE0mA/V
Cgk0pF
Cgp0pF
Cpk0pF
GAIN2%
POWER35%
DRIVE100%
LINEARITY95%
TYPICAL OPERATING POINT
EXECUTIVE SUMMARY
The 6AS7G is a indirectly-heated triode from RCA, introduced around 1945. It provides a gain factor (μ) of 2 with 290Ω plate resistance. Commonly used in otl / regulator applications. Classic OTL output.
APPLICATIONS
SET outputPush-pull outputHeadphone output
OTL headphone ampAtma-Sphere MA-1
• Headphone amp
HISTORY
Introduced1945ManufacturerRCAEquivalents6520
Golden AgeSPECIFICATIONS
Heater Voltage6.3V
Heater Current2.5A
Max Plate Voltage250V
Max Power14W
Sensitivity7 mA/V
Gain Factor2
Internal Impedance290Ω
PinoutOctal
Era1945
RarityCommon
Input Capacitance6pF
Miller Capacitance2pF
Output Capacitance4.5pF