Voltage - Triode (single) ·Triode
Philips triode for receiving and amplifier service; available source material does not establish a narrower functional application confidently.
E409 is a Triode device in the supplied Philips literature. Philips indirectly heated triode amplifier.
European 4-pin base
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
Philips indirectly heated triode amplifier.
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.
Plate voltage
200 V
ClassA
Plate current
12 mA
ClassA
Grid bias
-1 V
ClassA
Maximum anode dissipation
4 W
Transconductance
4 mA/V
ClassA
Amplification factor
9
ClassA
Internal resistance
7000 ohm
ClassA
Data set 02
Published operating points and test conditions from this source.
Normal plate current
12 mA
Grid bias
-16 V
Maximum transconductance
4000 µS