EC2

Name: EC2
Brand: Philips

Small Signal Triode — P8A — Philips

Data: HighHigh quality — base, heater, all universal parameters present, and ≥50% of desirable parameters filled in. Safe to use for design decisions.

↗ TDSL ↗ Radiomuseum

Known Equivalents & Substitutes

AC2CC2TEC2VEC2VC2RE052

Electrical Specifications

Absolute Maximum

Anode Voltage (max)Anode Voltage (max DC)550V

Anode Dissipation (max)Anode Dissipation (max)2W

Cathode Current (max)Cathode Current (max)10mA

Heater-to-Cathode Voltage (max)Heater-to-Cathode Voltage (max)50V

Max Grid Resistor

Notes

The characteristic curves of EC2, AC2, and CC2 are identical — all three are the same electrical design, differing only in heater supply designation.
Uses the pre-war P8A 8-pin side-contact base (Philips 'Sidekontakt'), which requires a period-correct socket and is incompatible with any modern standard socket without an adapter.

Pin Layout — P8A

1Anode

2Control Grid

3Cathode

4

References

https://frank.pocnet.net/sheets/204/e/EC2.pdf