Data set 01
1950 Sylvania
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
Plate resistance
260000 ohm
Published datasheet value
Voltage Pentode - Sharp Cutoff (single) ·Pentode
5906
Sharp-cutoff pentode designed for RF, VHF/UHF, wide-band, or voltage-amplifier service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- 8DL
- Socket code
- B8D
- Base pins
- 8
- Nominal heater
- 26.5 V / 45 mA
Description
Premium subminiature sharp-cutoff pentode for reliable RF amplifier service to 400 megacycles and severe environments.
Socket description
Subminiature 8-lead
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 8DL
- 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
8DL - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN2G3 | A | G3 — Suppressor GridGroup 8DL2 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN2K | A | K — CathodeGroup 8DL2 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN3H | — | H — Heater EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN4G3 | A | G3 — Suppressor GridGroup 8DL4 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN4K | A | K — CathodeGroup 8DL4 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN5P | A | P — Plate (Anode) EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN6H | — | H — Heater EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN7G2 | A | G2 — Screen Grid EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN8G3 | A | G3 — Suppressor GridGroup 8DL8 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
| PIN8K | A | K — CathodeGroup 8DL8 EIA source transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 129, 8DL |
Section ratings
1 physical section, each with unique specifications.
Section 1
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 260000 Ω
- Transconductance
- 0.005 S
- Max plate voltage
- 165 V
- Max screen voltage
- 155 V
- Max plate dissipation
- 1.1 W
Sharp-cutoff RF pentode; 100-V Class A characteristics and capacitances published.
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.
Data set 02
195X General Electric Essential Characteristics
Published operating points and test conditions from this source.
SECTION 1
Pentode
Capacitance
Input Capacitance
4.2 pF
Output Capacitance
3.4 pF
Grid-to-Plate Capacitance
0.015 pF
Other
Plate Voltage
100 V
ClassA
Screen Voltage
100 V
ClassA
Cathode Resistor
150 ohm
ClassA
Plate Current
7.5 mA
ClassA
Screen Current
2.4 mA
ClassA