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EL44 — Power Pentode, Rimlock | Tubeofile
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EL44
Power Pentode — Rimlock
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Philips
↗ Radiomuseum
Known Equivalents & Substitutes
No known equivalents. If you know of any, use the ⚑ Report Issue button above.
Similar Tubes (Not Drop-In Compatible)
EL41
Same Rimlock B8A base but without top cap — different anode connection method, different ratings
EL84
Noval successor to the Rimlock EL4x family — different base, improved design
Electrical Specifications
Absolute Maximum
Anode Dissipation (max)
Anode Dissipation (max)
12
W
Heater
Heater Voltage
Heater Voltage
6.3
V
Heater Current
Heater Current
0.72
A
Notes
Rimlock B8A base with top-cap anode connection — unusual combination for Rimlock tubes.
Heater current of 0.72 A is identical to the EL84, suggesting this was a transitional design between the Rimlock and Noval eras.
Very rare tube — found in very few radio models. The Rimlock-with-top-cap configuration was quickly superseded by the fully-pinned Noval designs.
Referenced in RTT (Radio Technique Telefunken) 2nd edition, 1950.
Pin Layout — Rimlock
1
2
3
4
5
6
7
8
1
Screen Grid (g2)
2
Heater
3
Cathode
4
Suppressor Grid (g3)
5
Control Grid (g1)
6
No Connection
7
Heater
8
Metallization / Shield
TC
Top Cap —
Anode (top cap)