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Mullard EY91 / CV135 halfwave rectifier

Size This valve measures 53x17mm overall and has a B7G base.


Heater voltage 6.3V
Heater current 420mA
Max applied RMS voltage 250V
Max working PIV 700V
Max no-load PIV 750V
Max mean DC anode current 75mA
Max peak anode current 375mA
Max heater-cathode voltage 300V + or -
Max reservoir capacitor 32µF
Min limiting resistance 75 ohm


Pin Function
1 Anode
2 Cathode
3 Heater
4 Heater
5 Anode
6 n/c
7 n/c



CV135 label

This file was last modified 11:03:16, Thursday April 14, 2022