Data set 01
1961 Tung Sol
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
TriodeTransconductance
4000 uS
Section1
SECTION 2
Pentode
Characteristic
PentodeTransconductance
7700 uS
Section2
Voltage Pentode - Sharp Cutoff (single) ·Pentode-Triode
6CS8
Sharp-cutoff pentode for television intermediate-frequency service combined with a general-purpose triode and controlled heater warm-up.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 9FZ
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 450 mA
Description
The 6CS8 combines a sharp-cutoff pentode intended for television intermediate-frequency service with a general-purpose triode. Tung-Sol notes controlled heater warm-up and electrical identity to the 6CR6 apart from specified differences.
Socket description
Small-button Noval 9-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- 9FZ
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 450 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9FZ - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1Base Pin | A | P — Plate (Anode) Literal label 1P; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN2Base Pin | B | G1 — Control Grid Literal label 2G1; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN3Base Pin | B | G3 — Suppressor GridGroup 9FZ3 Literal label 2G3; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN3Base Pin | B | K — CathodeGroup 9FZ3 Literal label 2K; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN3Base Pin | — | IS — Internal ScreenGroup 9FZ3 Literal label IS; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN4Base Pin | — | H — Heater Literal label H; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN5Base Pin | — | H — Heater Literal label H; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN6Base Pin | B | P — Plate (Anode) Literal label 2P; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN7Base Pin | B | G2 — Screen Grid Literal label 2G2; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN8Base Pin | A | K — Cathode Literal label 1K; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
| PIN9Base Pin | A | G1 — Control Grid Literal label 1G1; manufacturer confirmation pending | Unverified EIA Base Connections printed p132, 9FZ |
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 5500 Ω
- Transconductance
- 0.004 S
- Amplification factor
- 22
- Max plate voltage
- 330 V
- Max plate dissipation
- 2.75 W
Published promoted fields populated from printed headings.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 300000 Ω
- Transconductance
- 0.0077 S
- Max plate voltage
- 330 V
- Max screen voltage
- 330 V
- Max plate dissipation
- 2.3 W
- Max screen dissipation
- 0.55 W
Published promoted fields populated from printed headings.
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
1966 Tung Sol Electronic Tubes 2 of 4
Published operating points and test conditions from this source.
SECTION 1
Triode
Other
Plate voltage
125 V
ClassA
Grid voltage
-2 V
ClassA
Characteristic
Plate current
22 mA
ClassA
Capacitance
Grid-to-plate capacitance
1.6 pF
Input capacitance
1.9 pF
Output capacitance
0.26 pF
SECTION 2
Pentode
Other
Plate voltage
125 V
ClassA
Screen voltage
125 V
ClassA
Cathode-bias resistor
50 ohm
ClassA
Characteristic
Plate current
13 mA
ClassA
Screen current
3 mA
ClassA
Capacitance
Grid-1-to-plate capacitance maximum
0.02 pF
Input capacitance
6 pF
Output capacitance
2.8 pF