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CV2257 cold cathode gas filled triode

 

Size This valve measures 30x7mm overall and has a 3 lead base

 

Control gap breakdown voltage75V
Control gap maintaining voltage55V (a)
Main gap breakdown voltage215V
Main gap maintaining voltage77V (a)
Transfer current5µA (b)
Max mean cathode current1mA
Operating time30µsec
Extinction time550µsec (c)

(a) measured at 1mA
(b) measured with 175V between anode and cathode
(c) time from 1mA cathode current

Lead Function
1Grid
2Anode
3Cathode

The cathode lead is indicated by a red spot

CV2257

This file was last modified 11:55:24, Friday June 10, 2022