Voltage Pentode - Sharp Cutoff (single) ·Pentode
Sharp-cutoff pentode designed for RF, IF, wide-band, or high-frequency voltage-amplifier service.
Miniature sharp-cutoff pentode for industrial applications.
Miniature 7-contact
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
| Terminal | Section | Connection | Evidence |
|---|---|---|---|
| PIN1G1 | A | G1 — Control Grid EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN2G3 | A | G3 — Suppressor GridGroup 7BK2 EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN2IS | A | IS — Internal ScreenGroup 7BK2 EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN3H | — | H — Heater EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN4H | — | H — Heater EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN5P | A | P — Plate (Anode) EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN6G2 | A | G2 — Screen Grid EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
| PIN7K | A | K — Cathode EIA chart transcription; independent manufacturer confirmation pending | Unverified EIA Base Connections, printed page 128, 7BK |
1 physical section, each with unique specifications.
Section 1
Pentode-connection characteristics promoted; triode-connection data retained as parameters.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
HeaterOrFilamentVoltageNominal
6.3 V
HeaterOrFilamentCurrentNominal
300 mA
Maximum Plate Voltage
330 V
Maximum Plate Dissipation
3.5 W
Maximum Screen Dissipation
0.75 W
Plate Resistance
1100000 Ohm
PlateVoltage=250V;ScreenVoltage=150V
Transconductance
6200 uS
PlateVoltage=250V;ScreenVoltage=150V
TriodeConnectionAmplificationFactor
41
TriodeConnection