Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Heater Voltage
26.5 V
Heater Current
45 mA
Voltage Pentode - Remote Cutoff (single) ·Pentode
6056
Subminiature remote-cutoff RF pentode for UHF amplification in rugged equipment, designed for long service life and stable characteristics despite shock and vibration. Operates from a 26.5 V, 45 mA heater.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B8D
- Base pins
- 8
- Nominal heater
- 26.5 V / 45 mA
Description
Subminiature remote-cutoff RF pentode.
Socket description
Subminiature 8-lead
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8D
- Base pins
- 8
- Nominal heater voltage
- 26.5 V
- Nominal heater current
- 45 mA
- 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
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 125000 Ω
- Transconductance
- 0.003 S
- Max plate voltage
- 55 V
- Max screen voltage
- 55 V
- Max cathode current
- 10 mA
Sylvania 6056 rugged subminiature remote-cutoff UHF RF pentode, eight flexible leads with 8DL basing, coated unipotential cathode and heater 26.5 V 45 mA. Absolute maximum plate and screen DC voltages each 55 V, DC cathode current 10 mA; maximum heater-to-cathode voltage 1200 V explicitly specified. Typical at anode/screen each 26.5 V with grid-1 return resistor 2.2 MΩ: plate 2.7 mA, screen 1.1 mA, gm 3000 µmhos (0.003 S), rp 125000 Ω. Grid-1 voltage approx -4.5 V for gm 10 µmhos. Shielded direct capacitances grid-1-to-plate 0.015 pF max, input 4.4 pF, output 3.4 pF. Rated shock resistance 450g, uniform acceleration 1000g, sustained vibration 2.5g; careful heater voltage regulation needed.
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.