5965

5965
ClassificationTriode
ServiceDigital computers
Height1+15⁄32 in (37 mm)
Diameter7⁄8 in (22 mm)
Cathode
Cathode typeUnipotential
Heater voltage6.3 V or 12.6 V
Heater current450 mA or 225 mA
Anode
Max voltage200 V
Max current100 mA
Socket connections
9A

Pin 1 – Unit 2 Anode (Plate)
Pin 2 – Unit 2 Grid
Pin 3 – Unit 2 Cathode
Pin 4 – Unit 2 Heater
Pin 5 – Unit 1 Heater
Pin 6 – Unit 1 Anode (Plate)
Pin 7 – Unit 1 Grid
Pin 8 – Unit 1 Cathode
Pin 9 – Heater mid-tap

(bottom view)
References
https://web.archive.org/web/20230314212705/https://frank.pocnet.net/sheets/137/5/5965.pdf

The 5965 is a miniature twin triode vacuum tube (thermionic valve) "designed for use in high-speed digital computers".

According to an MIT Project Whirwind memorandum, the tube was developed c.1953 for IBM by GE, primarily for use in the IBM 701 computer, and was designated as a general-purpose triode tube. In European use the tube was labelled E180CC; sometimes the same tube was labelled with both names.

Vacuum tube logic module from a 700 series IBM computer featuring 5965 tubes.

See also

References

  1. ↑ Sylvania. Engineering Data Service. 5965. November 1953.
  2. ↑ Frost, H. B. (May 4, 1953). "Memorandum M-2135: Some notes on current tube types" (PDF). MIT. p. 3. Archived from the original (PDF) on 28 March 2021. Retrieved 12 February 2024.
  3. ↑ Wyatt, Allan (27 December 2012). "5965". The Valve Museum. It is also labelled as a E180CC showing that the two Types are equivalent.