Data set 01
194X Miniwatt
Published operating points and test conditions from this source.
SECTION 2
Pentode
Characteristic
Plate Current
10 mA
Plate 170 V; Screen 170 V
Voltage Radio Detector Converter ·Pentode-Triode
XCF80
Medium-mu triode plus sharp-cutoff pentode designed for television frequency-changer and oscillator-mixer service.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 2
- Base
- 9DC
- Socket code
- B9A
- Base pins
- 9
- Nominal heater
- 6.3 V / 300 mA
Description
Medium-mu triode and sharp-cutoff pentode for television frequency-changer/oscillator-mixer service.
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
- 9DC
- Socket code
- B9A
- Base pins
- 9
- Nominal heater voltage
- 6.3 V
- Nominal heater current
- 300 mA
- Parallel heater voltage
- -
- Parallel heater current
- -
- Series capable
- No
9DC - Terminal pinout
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN12P | B | P — Plate (Anode) Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN21G1 | A | G1 — Control Grid Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN31G2 | A | G2 — Screen Grid Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN4H | — | H — Heater Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN5H | — | H — Heater Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN61P | A | P — Plate (Anode) Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN71G3 | A | G3 — Suppressor GridGroup 9DC7 Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN7IS | A | IS — Internal ScreenGroup 9DC7 Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN71K | A | K — CathodeGroup 9DC7 Chart transcription; manufacturer verification pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN82K | B | K — Cathode EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DC |
| PIN92G1 | B | G1 — Control Grid EIA chart transcription; manufacturer confirmation pending | Unverified EIA Base Connections, printed page 131, 9DC |
Section ratings
2 physical sections, each with unique specifications.
Section 1
Triode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 12500 Ω
- Transconductance
- 0.0052 S
- Amplification factor
- 65
- Max plate voltage
- 250 V
- Max plate dissipation
- 1.5 W
- Max cathode current
- 14 mA
Published ratings and characteristics promoted from the approved source.
Section 2
Pentode
X-ray radiationInterelectrode capacitances
- Plate resistance
- 500000 Ω
- Transconductance
- 0.0062 S
- Max plate voltage
- 250 V
- Max screen voltage
- 175 V
- Max plate dissipation
- 1.7 W
- Max screen dissipation
- 0.75 W
- Max cathode current
- 14 mA
Published ratings and characteristics promoted from the approved source.
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
1975 RCA RC30
Published operating points and test conditions from this source.
SECTION 1
Triode
Characteristic
Plate voltage
100 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
14 mA
ClassA
Other
Plate supply voltage
550 V
SECTION 2
Pentode
Characteristic
Plate voltage
170 V
ClassA
Screen-grid voltage
170 V
ClassA
Grid No.1 voltage
-2 V
ClassA
Plate current
10 mA
ClassA
Screen-grid current
2.8 mA
ClassA
Input resistance at 50 MHz
0.01 megohm
50MHz
Equivalent noise resistance
1500 ohm
Other
Plate supply voltage
550 V