Voltage Dual Pentode ·Pentode-Pentode
6BY11
Dissimilar dual-pentode Compactron combining an audio power-output amplifier and a dual-control pentode for FM detector service. Uses a 6.3 V, 1.2 A heater and 12EZ basing.
- Sections
- 2
- Base
- -
- Socket code
- B12C
- Base pins
- 12
- Nominal heater
- 6.3 V / 1.2 A
Description
Special-purpose receiving tube; values retained from supplied source.
Socket description
Duodecar 12-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B12C
- Base pins
- 12
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 1.2 A
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
Terminal pinout
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
Section ratings
2 physical sections, each with unique specifications.
Section 1
Pentode
No fixed ratings are recorded for this section.
Sylvania 6BY11 dissimilar dual-pentode Compactron for combined AUDIO OUTPUT amplifier and FM detector service. This first physical Pentode section is the power/audio-output section as documented by the manufacturer description. Heater 6.3 V 1.2 A; Compactron 12-pin E12-70 basing 12EZ. Manufacturer heater-to-cathode maximum heater-negative 200 V total DC+peak, heater-positive 100 V DC and 200 V total DC+peak. Existing section electrical maximum fields left NULL since attached readable source does not unambiguously isolate section-specific limits. Second pentode section is dual-control FM detector; do not treat the two sections as identical.
Section 2
Pentode
No fixed ratings are recorded for this section.
Sylvania 6BY11 second physical section is DUAL-CONTROL PENTODE for FM detection, distinct from first section's audio power-output pentode. Dissimilar two-pentode Compactron, 6.3 V 1.2 A heater, 12-pin E12-70 basing 12EZ. Maximum heater-to-cathode negative 200 V total DC and peak; positive 100 V DC and 200 V total DC and peak. No numerical plate/screen maxima or intrinsic transconductance promoted without an attributable complete section-specific datasheet. Physical section index 2 retained.
Source-dependent data
Operating conditions by source
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.