6BQ7A
Dual Triode · IHT · 9-pin Noval · 1955
“Cascode RF dual triode.”
Medium-gain triode for driver and line stage applications
Datasheet ↗SPICE
GAIN FACTOR0
PLATE IMPEDANCE0kΩ
TRANSCONDUCTANCE0mA/V
GAIN38%
POWER5%
DRIVE94%
LINEARITY81%
TYPICAL OPERATING POINT
EXECUTIVE SUMMARY
The 6BQ7A is a dual indirectly-heated triode from RCA, introduced around 1955. It provides a gain factor (μ) of 38 with 6300Ω plate resistance. Commonly used in rf / preamp applications. Cascode RF dual triode.
APPLICATIONS
Voltage amplifierPhase splitter
Generic triode rf / preamp stage
• Hi-Fi stereo• Headphone amp
HISTORY
Introduced1955ManufacturerRCAEquivalentsNone
Golden AgeSPECIFICATIONS
Heater Voltage6.3V
Heater Current0.4A
Max Plate Voltage250V
Max Power2W
Sensitivity6 mA/V
Gain Factor38
Internal Impedance6.3kΩ
Pinout9-pin Noval
Era1955
RarityCommon