Data set 01
1948 Brimar Radio Valve Manual
Published operating points and test conditions from this source.
SECTION 1
Pentode
Characteristic
HeaterOrFilamentVoltage
1.4 V
HeaterOrFilamentCurrent
50 mA
Voltage Pentode - Sharp Cutoff (single) ·Pentode
1LN5E
Low-drain loctal battery RF pentode intended for radio-frequency amplifier service, related to the 1N5 receiving family.
Directly heatedCold cathodeCommon cathodeDissimilar
- Sections
- 1
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater
- 1.4 V / 50 mA
Description
Low-drain loctal battery RF pentode; the source refers to the related 1N5 family for fuller characteristics.
Socket description
Loctal 8-contact
General specifications
Tube and section characteristics
Properties common to every published source and operating point.
Heater and base
- Base
- -
- Socket code
- B8G
- Base pins
- 8
- Nominal heater voltage
- 1.4 V
- Nominal heater current
- 50 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
- 1100000 Ω
- Transconductance
- 0.0008 S
- Max plate voltage
- 90 V
- Max screen voltage
- 90 V
Brimar 1LN5E directly heated battery RF pentode with eight-pin loctal base, filament 1.4 V 50 mA. Published maximum anode voltage 90 V and screen voltage 90 V. Manufacturer operating data: anode current ~1.6 mA, screen current ~0.35 mA, control grid 0 V, anode impedance ~1.1 MΩ, mutual conductance 0.8 mA/V (0.0008 S); at control-grid bias -4.5 V mutual conductance ~0.01 mA/V. Existing sharp-cutoff designation retained under approved change scope. Values for characteristic operating points are not separate unlimited maximums.
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.