Virtual Valve Museum
Virtual Valve Museum | search: (use * for wildcard)
About the museumMuseum exhibitsUpdates, new exhibits etc.EquipmentSupporters
*DocumentsValves wanted!Valves for sale or for tradeLinks to other sites, suppliers etc.

1B86 GM tube

This valve measures 88x9mm overall and has a 3 lead base

Threshold voltage275V
Min plateau length *50V
Plateau slope *30%/50V
Recovery time100µsec
Background (Vo=300V)30counts/minute
Life5x107 counts
Electrode capacitance1pF
Anode active length2.5 inches
Operating voltage300V
Ambient temperature-40° min, 100° max
Humidity100% max

*: for a new tube

The outer two leads are the cathode, the centre lead the anode.


Information supplied by Michael Emerson

This file was last modified10:52:40, Sunday April 16, 2017