1X2

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The 1X2 (European equivalent DY80) is a high-voltage rectifier tube with a B9A (Noval) miniature 9-pin base and an anode cap. It's maximum inverse voltage is 15 kV and the maximum forward current is 1 mA. The filament operates on 1.25 V, 200 mA.

The 1X2 tube is used in the 565, 507, and 517 (420 HV supply).

Tek part number: 154-0005-00

Aged/Checked/Matched Pair Details
Used in Tek Part# S/N Range
420,420A 157-0079-00 All, Note1

Note1: A dot of yellow lacquer is applied to bottom of the selected tube.

Reference:

Tube aging procedure / Selection and checking procedure

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