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TC2 vacuum tube: technical reference
Explore the available information on the TC2 vacuum tube in the EnryLab technical archive.
The TC2 is an indirectly heated Dario–Radiotechnique triode for radio reception. The data preserved in our sources specify a 4 V, 0.65 A heater and a European P8A base with eight side contacts. The heater and cathode are separate elements, as is characteristic of indirectly heated valves.
The designation appears in the Philips Comparative Pocket Book for Valves, sixth edition of January 1939, on page 31: in the Dario–Radiotechnique section TC2 is paired with AC2. P. H. Brans's 1950 Vade-Mecum confirms the same reference on page 87 and specifies 4 V for both. These documents help identify a less familiar commercial designation and trace its connection to AC2 in replacement literature.
A useful identification detail is the distinction from TC2/250. Brans lists it on a separate line under Philips, with an 11 V heater voltage, while Dario TC2 remains the 4 V entry. The suffix must therefore be retained when reading a marking. No anode limits, dissipations or circuit performance have been inferred for the TC2 described here from equivalence entries alone: the entries consulted do not provide a complete set of those data.
Pinout and connections
Base: P8A - Europe side contact (Au P, 8SC) (Codex=Sa)
Electrical data
Heater
- Heater voltage Vh
- 4 V
- Heater current Ih
- 0.65 A
Datasheet PDF
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